Visited this place for the first time recently and I'll definitely be back (: tried the strawberry matcha (it's a bit more on the green tea matcha side, not super sweet) and a regular croffle (I could eat a million of these- soooo good!) This team runs so smoothly and efficiently, I didn't wait long and my order didn't seem rushed through. Seating & dining area was neat, tidy and a great vibe overall read more

Outpost Coffee - Strawberry Matcha and Plain Croffle name a better duo - Coffee & Tea Near Me - Diamond Bar, California

It was my first time visiting Outpost Coffee! We made the trip here before driving down towards Orange County. Parking for this place is tight, especially when very trafficked. Be careful backing in and out if you drive a larger car! There are two entry points towards the store, but if you enter on the left side, you'd be able to access the cashier. The interior of the shop is quite clean and well furnished! There were many people sitting and enjoying their time there. We were serviced by a very sweet, patient, and kind barista. They took our order: banana caramel latte, a yuzu tonic, and a warmed up plain croffle. We took a seat to wait for our items, which didn't take too long. Their banana caramel latte was okay; I probably wouldn't get it again. There was a lot of milk in mind and a fading coffee taste. The drink tasted similar to artificial banana and I didn't like that. The yuzu tonic was heavy in yuzu and not much coffee. The highlight would definitely be the delicious croffle! It was warmed up, flaky, and quite chewy. We regret not ordering two! The Outpost Coffee had fantastic service, ambiance, and croffles. Sadly, we didn't like their drinks, but wouldn't mind coming back to try something else! Especially since the pumpkin season is coming back! read more

See all

7/24/2026 4 1/2 Stars First time here. Came here early afternoon. It was not busy with no lines, but the cafe's seats were nearly filled. FLAT WHITE It wasn't bad. Slightly sour, but fruity coffee. Overall, I enjoyed it. Good mouthfeel too. Good temperature, it wasn't too hot nor luke warm. MANGO MATCHA At first taste, it tasted more like guava. But it was indeed mango. But a fake mango flavor. The mango flavor was there, but could not taste the matcha. It wasn't bad, but I had better mango matchas elsewhere. CUSTOMER SERVICE It was okay. Not bad, but not great. Staff could smile more than just stare at you. Even say "Hello" or "Welcome" when you walk in the coffee shop. LOCATION Located in a small strip mall at Golden Springs Plaza. Parking is medium-sized for the amount of businesses here. I had no issues finding parking in front of the coffee shop, although more and more parking spots were being taken. AMBIANCE + SEATS The ambiance was relaxing. No loud music. Lots of people coming in and working on their laptops. Five small tables for two in the center. Along the wall there were bar seats for 19-20 people. There's a long communal table in the center for seats for 4-5 people. At the front and to the side, there were 3 tables for two. Outdoor tables for two right outside the cafe. Bathroom is outside of the cafe and you have to enter the other part of the building with a bathroom code to unlock. Will I visit again? Maybe if I'm in the area. But I'm in no rush to come back. read more

See all

FIRST visit: * FARE(S) feasted on: *** Matcha latte *** Honey Oat latte *** Decaf oat latte * FRIENDLY service: Yes * FRESH air seating outside? No * FAIR pricing: Decent * FREE parking: Yes, plaza lot - note, entrance is before the street light and corner building * FYI: Delicious, fresh brewed (strong) coffee & friendly smiles for service - spacious, brightly-lit café for studying or getting work done (every table was occupied by someone working on their laptop on a weekend). A/C was strong on the day we visited, so bring a hoodie if you consider staying here for a while. FOUR & 1/2 stars **** ' read more

Outpost Coffee - Front counter - Coffee & Tea Near Me - Diamond Bar, California

Stopped by this morning to try a new coffee shop and the atmosphere was welcoming and the staff were delightful. The coffee my wife had, she loved it and the refresher I had was tasty! Definitely can't wait for them to open up the new location near us! read more

See all

My wife and I had our first visit at Outpost Coffee a week ago before we went to Hospital to Emotions for a double date. We wanted something quick to drink and eat to give us some energy for the long day ahead. I ordered the blueberry sparkler and a chocolate chip mixed nut cookie. In short, the sparkler was refreshing and not too sweet and the cookie was large which satiated my appetite in the morning. The coffee spot is very clean and modern looking and is a place where I'd like to do some work because of the quiet ambiance. Side note*** the bathroom is in the lobby behind the coffee shop just ask the server for the code. My wife also enjoyed her drink as well, but i forgot what she ordered. Overall, we'll be returning for another visit since it is local to our place and hopefully then I'll remember what she orders! read more

Such a cute local coffee spot! I ordered their pistachio outpost and it was so good. I was afraid it would be overwhelming sweet so I got it with 1 pump of flavor instead of 3 and it was perfect. The bits of pistachio on top made it even better! Also ordered their dirty Thai and my bf really liked that one too. For food we had the avo bagel on the jalapeño cheese bagel and the turkey sandwich. Both were delicious! Will be back :) read more

Outpost Coffee - Pistachio outpost and Dirty Thai - Coffee & Tea Near Me - Diamond Bar, California

Stopped by on a Sunday morning and it was pretty busy, but the employees are very quick and attentive. I ordered 3 outpost latte and they were delicious. I got it half sweet with almond milk and it was a good balance of sweetness. The espresso was bold and smooth. There is plenty of seating and overall pretty chill vibes. read more

Outpost Coffee - Outpost latte - Coffee & Tea Near Me - Diamond Bar, California

There's a plaza parking to get here. Inside is sleek and chill. Seems like a great place to meet with a friend or some studying. The staff are nice. The drinks arrived at a good pace. They have some tasty looking pastries that unfortunately I didn't get to try. I got the earl grey latte. The drinks was smaller than expected, especially for the price. I did get the earl grey flavor occasionally. There were hints of the lavender. It was enjoy enough and not too sweet. And it wasn't too hot so you can drink right away. I'd like to try more of the drinks. read more

Outpost Coffee - Earl grey latte (spring menu 2026) - Coffee & Tea Near Me - Diamond Bar, California

I came around 1pm on Saturday and immediately noticed how busy it was. Ordered:4/5 Banana matcha: the banana cream top works great with the matcha, however it did seem to be slightly overpowering. The matcha flavor was light but I would be curious to see how the other drinks taste! Vibe: This place is pretty packed with both people chatting and studying. It can be pretty loud, but with headphones, this is a good place to work. Theres plenty of tables but very limited on outlets. Parking: there's a parking lot shared in the plaza. However it can be pretty hard to find. Overall: this place isn't bad and I'm glad I gave it a try. It would be great for a quick catch up with friends. read more

Outpost Coffee - Banana Matcha - Coffee & Tea Near Me - Diamond Bar, California

I had an adequate experience at Outpost Coffee (Diamond Bar). I ordered the Ube-Ube Coffee ($7). It's two shots of espresso with sweet ube. The initial sip is refreshing, but the coffee flavor quickly fades. As time passes, the drink tastes like sugary cereal milk. I arrived at Outpost Coffee (Diamond Bar) on Friday (around 11:48AM). The parking lot is big but busy. Fortunately, I quickly found a spot. The sign says, "2 Hour Parking Only - All Day." Staff is polite. Staff quickly took my order and answered my questions. My coffee took three minutes and 25 seconds. As mentioned, I ordered the Ube-Ube Coffee ($7). The caffeine is soft but uplifting. The drink is not bitter nor runny. However, the flavor of sugar and milk dominates the cup. It's not a memorable drink, but it's not bad. On ambiance, Outpost Coffee (Diamond Bar) felt a little worn down and old. The crevices were dusty and the location felt a little messy. There's about three electrical outlet. The location also has customer internet with password; details are posted on the counter. Fortunately, Outpost Coffee (Diamond Bar) has many clean tables. There's about six small interior tables, one long curved counter, and one very long table. The ceiling is tall, so the location didn't feel cramped. Overall, Outpost Coffee (Diamond Bar) is not bad. It feels shabbily maintained, but there's utility. If already nearby, I lightly recommend 4.2 out of 5 read more

See all

I believe this was the only place that truly offered a spring menu where you could actually taste the ingredients. I ordered the pistachio outpost, and it was absolutely delightful. It was so refreshing to enjoy the nuttiness of the pistachio. Service was good. I loved the large windows that let in all that natural light. read more

See all

Everything was sooo great! The employees were inviting and the place was super cute & just a great vibe! The mocha was delicious! We also were swooning over the jalapeño cheddar bagel. It was so good that we got a to go order before leaving of more food, coffee, AND matcha Just really enjoyed the overall service, thank goodness for good baristas 11/10 recommend this place!! read more

Outpost Coffee - Coffee & Tea Near Me - Diamond Bar, California

Love this place! The signature Outpost Latte is always my favorite. Great coffee and a cozy atmosphere. read more

Outpost Coffee - Outpost Latte - Coffee & Tea Near Me - Diamond Bar, California

Great place! Good late coffee design. Great Macha Late ! Waffle Taste good ! Avocado bagel sandwich delicious! read more

Outpost Coffee - Coffee & Tea Near Me - Diamond Bar, California

I came here to try their coffee and it was pretty good. I ordered a hot mocha and taste was just perfect to me, better than Starbucks in my opinion. This cafe is a nice place for people to chat with friends or doing their self study. This seems like a popular place for young adults. Overall my experience was okay, would be back again. read more

See all

**MENU ATTACHED AS OF 03/14/26** Highlights: matcha was great and the indoor seating area has a lot of room! Great place for studying and catching up. There are some outlets available. Unfortunately the croissant I got was dry. Maybe we came on an off day? Just knocked off one star but hopefully I can try again next time I visit! I'd ideally like spots like these to have great baked goods as a little study snack. Parking is a little full but not impossible. Service was great! Baristas in front were very friendly and answered questions especially about the spring menu. Overall, I'd like to visit again especially for redemption for the baked goods. read more

See all

Such a beautiful space with lots of natural lighting. It seems perfect for a nice catch-up over coffee or work session. For studying, although there are a bunch of seats, there's only three charging ports, so beware! Everyone who helped us was very kind and knowledgeable. We went in the early morning, and we were asking a bunch of questions They met us with kindness and they seemed to want us to have exactly what we wanted. For the star of da show: grapefruit tonic! This drink is incredibly nostalgic for me, as I used to have it all the time in Asia when I was in high school. I have not found a replica until now! The espresso pairs perfectly with the tonic and grapefruit. I love love love that a hint of the grapefruit's bitterness is preserved, and it is just such a well rounded drink. We also got a banana caramel latte, which isn't up my alley but perfect for my bf. He said he was flabbergasted that he could distinctly taste both banana, caramel, and coffee in each sip. I cannot wait to come back and try their other drinks, but I have a new favorite spot. read more

See all

This replaced what previously was Mugs Coffee, and I liked how they redid the seating so it's more open spaced with plenty of bar seating for working. I just wish they had more outlets available and less stools. It was not too busy when I arrived at 2pm on a weekday, and it wasn't too loud which I appreciated for studying. I tried out their signature latte which came with a cream top, it was like a standard Einspanner drink. I'd come back here again if I was in the area read more

See all

One of the reliable coffee shops in DB. I used to come here when it was still Mugs so i was surprised it changed to Outpost! However they did not disappoint. Food: 4/5 I ordered their iced matcha latte with signature foam top. The drink came out to around $7.50 or so. Pretty standard pricing for matcha and it tastes pretty good. Although i had only ordered the plain signature foam top i could taste a hint of banana flavor so im guessing the foam pitcher they used wasn't rinsed properly...? I also ordered a hot mocha latte with oat milk. Probably one of my favorite mocha lattes although the size of the drink is a bit disappointing considering the price. Service: 5/5 Service was great no complaints whatsoever. All staff were very kind. Ambiance:4/5 Great study spot with lots of natural lighting. There are plenty of seats but it gets filled often. I enjoyed the ambiance, feels very welcoming and comfortable. read more

See all

Cute little casual coffee shop with plenty of space to do work/study. I always see students from surrounding colleges there. All the drinks I've had have been very good. I especially recommend their outpost latte and seasonal mango matcha. They have pastries that are good as well. Drinks don't take long to receive and the staff is usually very chill. read more

I found Outpost Coffee and nice corner spot located in a "circular" plaza that's just hard to many stores if you're new to the area. The coffee shop is designed like an open-concept with bright lighting, and area is more communal than a place to relax or chill. I tried the Ube Latte (had the purple color but very vanilla), which wasn't that great, so I probably should've gone with their specialty drink instead - Outpost Latte. They gave me a sample of the Outpost Latte, and it was much better. The strawberry matcha was okay...sweeter than I would had liked. Overall, friendly staff and may need to stop by again to try other drinks. read more

See all

overall: If the wifi was better, I'd come back again to study. Earl Grey Latte (3.7/5): this was one of their spring specials. I really couldn't taste the earl grey, instead I mainly tasted honey instead. It was also on the sweeter end. Ube-Ube Latte (4/5): The ube was pretty good and paired well with the coffee but the ube tasted a little artificial. seating: good amount of seating available with both window bar seating and tables. good for getting work done. wifi: they do offer free wifi but it was very slow which made it hard to get work done. parking: plenty of parking in the plaza. bathroom: bathroom needs a code that u can get from the cashier but was clean and is in the main building. read more

Outpost Coffee - Earl Grey Latte, Ube-Ube latte - Coffee & Tea Near Me - Diamond Bar, California

See all

This is a decent spot to do work/study but there's not many outlets to charge The coffee was just okay but nothing that caught my tastebuds read more

See all

Outpost coffee was a very nice place to have a meeting or study. There are big windows with lots of natural light. The coffee is really good and they have a variety to choose from. They also have pastries in the morning time. read more

Outpost Coffee - Oat Milk latte - Coffee & Tea Near Me - Diamond Bar, California

I never knew this coffee place was here. It's tucked away in Diamond Bar in a professional building. It's a good sized coffee spot. Plenty of seating and a clean esthetic. I would definitely come here to study or get some work done. Parking is plentiful. They have a good selection of drinks. I went with the Outpost Latte. It is a chicory infused cold brew with a cream. Loved it. Service was great. Staff was friendly and greeted me as I can in. I also got a bagel and cream cheese and it came out perfectly warm and the cream cheese generously spread across it. read more

Outpost Coffee - Outpost Latte - Coffee & Tea Near Me - Diamond Bar, California

This new coffee shop replaced what used to be The Mugs. Honestly, I like the vibes a lot better. The interior is clean and simple. The service was quick and helpful. The cashier recommended the outpost latte amongst a couple other drinks. The drink itself is pretty good, not sure what it's made of but it tasted nutty. Great place to study/chill with friends. Didn't get any food but they also got food options in case you get hungry or smth. read more

See all

It was raining a lot recently so I was looking for a cafe to take shelter and get some work done. I stopped by Outpost Coffee on a Saturday at around 12:30 PM. It was really busy at the time with most of the parking spots being taken. After a brief wait to order, I was able to grab a seat at the window. This was a great seat to sit back, get some work done, and watch the rain with the natural lighting coming in as well. There was no outlet near my seat, otherwise it would have been perfect spot. For my order I got the pour over coffee. I really wanted to get a matcha croffle but they ran out at the time. Decided to grab the regular croffle instead. Since it was busy at the time, I was having a hard time hearing the staff call out my name for the order. Since it was a pour over, it took about 15 minutes for it to be ready. The croffle was not too sweet so it went well with the coffee; I do wish it could have been warm instead of cold. This store does have free WiFi. The passcode was available right at the front counter. American Express is accepted as payment here. read more

See all

When mean my friends entered, we were greeted with a frown from an asian dude at the counter, which was weird, but we didn't really mind. Most stores order the Ube Latte, and I had recommended it to them because in my past experience, the Ube Latte are usually really good, but specifically this one you can't really taste Ube like at all, which I was really shocked by because I wanted my friends experience Ube for the first time, the only Ube thing about the Ube drink is that it's purple like Ube. It literally tasted like a normal latte with no Ube in it. I honestly would ask for my refund and just order a normal latte. The interior is spacious and big, but kind of dirty, but the parking outside is pretty decent. The restroom for this location is shared with the entire building, so you're gonna have to ask for directions. read more

Outpost Coffee - Coffee & Tea Near Me - Diamond Bar, California

I've never been a regular anywhere but I've been coming here once a week. So, maybe not a regular but pretty consistent for someone who usually never visits the same cafe again. I tried the seasonal pumpkin spice drink a couple of weeks ago and it wasn't my favorite but I'm glad I tried it. It's one of the three seasonal drinks right now and while it had a good pumpkin flavor, it was too spice-forward. I think it's worth a try though, if you don't mind it having a strong nutmeg profile. However, last week I came back to try a few new drinks in addition to my favorite (the outpost latte). I was shocked by how good the Spanish latte was. The espresso was strong, but it was complemented well by the condensed milk and had a very smooth taste. It was also rich and creamy in the best way without being too sweet. I tried some of the blueberry matcha, but it wasn't my favorite for personal reasons since I usually prefer plain matcha lattes. I think they did a good job of making it with the right ratio, though, because I could taste the blueberry without it overpowering the matcha. I also think they whisk it by hand, so maybe it's worth a shot to try it again but with a cream top. read more

See all

I'm late to the game reviewing this coffee house. It's not in my area, but I've been back multiple times. It's super spacious. Theres beautiful natural light. I haven't tried any of the pastries but I must say they all look delectable. I really enjoy the avo bagel for breakfast. The truffle salt is chefs kiss. I've tried their banana matcha. The matcha wasn't as strong and rich as I would've liked. It was more creamy and sweet. One and done with that. I did also try the pistachio outpost on a different occasion. Their outpost series drinks feature chicory. There is definitely some waiting in the afternoon. This is a popular establishment for students. Id recommend stopping by early to enjoy the morning sun by the panoramic window in front of the bar seating. I will be back! read more

A cute coffee shop in diamond bar - has a lot of unique coffee I truly enjoyed their outpost latte which has sweet cream on the top with not-so sweet coffee on the bottom which makes a really good balance My husband tried thai iced tea latte and he really liked it as well as cappuccino. I also bought their beans for espresso - not my favorite as it has a lot of citrus flavor. It is inside a plaza with enough parking and open for long hours. There are a lot of seatings inside as well read more

Outpost Coffee - Outpost Latte, Cappuccino - Coffee & Tea Near Me - Diamond Bar, California

Both the latter and matcha were delicious! My favorite is the caramel banana latte and I ask for less caramel because it is in the sweet side. The place seems like a good cafe to get some work done at least at the time I went. I love natural lighting and considering this place has beautiful huge windows there is a lot of natural lighting! The service was good my drinks were out pretty quickly after I placed the order and the cashier was friendly and patient when I mentioned to her I was visiting for the first time. The bakery items looked so tasty but I didn't try any this time around... I will definitely be coming back read more

Outpost Coffee - Latte and matcha - Coffee & Tea Near Me - Diamond Bar, California

See all

Visiting from out of town and was getting ready to head back home. I wanted some coffee but love trying local places. I searched what was near by and this was right off the freeway. I got the banana latte and it was great. I got it with the banana cold foam. I also got the guava and cheese danish. The inside is cute and the service was fast and friendly. There was alot of people in there and some sitting at tables working. Seems like a popular local spot. Would visit again read more

Outpost Coffee - Banana Caramel Latte - Coffee & Tea Near Me - Diamond Bar, California

See all

Pretty small coffee spot that is located in a pretty big plaza They're open daily 7am-9pm Parking was ok since there was plenty of parking but it could be difficult since it's shared with many other businesses Menu had a good variety of coffee and matcha drinks, as well as croffles, sandwiches, and bagels. Prices were reasonable and most drinks were $6-$7+ They have milk substitutions for an extra $1 and additional syrup for +$0.50 Inside was pretty small but it has plenty of seating. However, I wish it had more power outlets! It was nice there was free WiFi! The Outpost Latte ($6.75) was pretty good and sweet. The coffee was quite strong and creamy. It was a little too sweet even though I asked for half sweet and less ice. This was 7/10 Overall, this was an okay study spot and the coffee was not bad read more

See all

i ordered their ube latte. i wanted to try something different compared to my usual cafe order of getting a matcha. this ube latte was $7 and i was pretty disappointed. it tasted like a regular latte, no ube taste at all. i might as well get the regular one. i did a caffeine pick me up and did do its job. i'm just more upset i paid $7 for a drink and it tasted dissapointing. plus they need to add more outlets in the store because i could only find three and they were all being used. anyways i probably would not come back again there's other cafes nearby that are prob way better. read more

Outpost Coffee - ube latte - Coffee & Tea Near Me - Diamond Bar, California

I used to love coming here when it was The Mugs. But somewhat recently they got new ownership. I always used to order a Rose Matcha. Unfortunately they didn't keep it on their menu like majority of the beverages, but they can add rose syrup if requested (old ownership added rose petals at the top). Hopefully they can add something similar one of these days to the menu ;) I also really love their croffles! They're a decent size and super soft. They melt in your mouth! The service is good. Everyone is friendly. Plenty of seating but gets packed quickly. However it is a little one the pricier side. I'd say .75 cents to a dollar more than most places. Other than that it's a great spot to catch up with a friend or get some work done! Lots of nice natural lighting also :) read more

Outpost Coffee - Strawberry Matcha - Coffee & Tea Near Me - Diamond Bar, California

Good coffee! Very cute cozy shop! Staff really nice! We got the honey oat and it was really really light and good!! Loved that coffee definitely memorable. We also got a tea and that was mid. But I'd be back here when in the área! read more

See all

Service was actually great, super friendly staff. As my first time here I had questions and they were able to answer in a friendly matter. Coffee is delicious and their bagel jalapenos and cheese woo! I did ask to try their popular drink Outpost house coffee. Chill vibe, seems there's a lot of students studying. read more

Outpost Coffee - Coffee & Tea Near Me - Diamond Bar, California

I think this place serves good quality matcha in the diamond bar location. The matcha was vibrant green and it had a causal vibe to the cafe. The staff were quick to take my order and speedy for making my drink. It was very crowded and I wished I could have stayed but it was quite full on the weekend. I will say this spot beats out the other cafes I've tried in the diamond bar area in terms of quality and taste so far. It's worth a try if you're looking to catch up some emails or find a place to meetup with friends. read more

Outpost Coffee - Coffee & Tea Near Me - Diamond Bar, California