Cancel

    Open app

    Search

    Outpost Coffee

    4.4 (185 reviews)
    Open 7:00 am - 9:00 pm
    Updated 3 weeks ago

    Order Outpost Coffee Takeout or Delivery

    Outpost Coffee Photos

    OUTPOST COFFEE ATMOSPHERE

    What's the vibe?
    Moderate noise
    Good for working
    Outdoor seating
    Dogs allowed

    Recommended Reviews - Outpost Coffee

    Your trust is our priority, so businesses can't pay to alter or remove their reviews. Learn more about reviews.
    Yelp app icon
    Browse more easily on the app
    Review Feed Illustration

    Reviews With Photos

    Earl grey latte (spring menu 2026)
    Francisco M.

    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.

    Outside
    Ian A.

    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

    Menu as of 03/14/2026
    Yvette P.

    **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.

    Spring 2026 Menu
    Zoey W.

    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.

    Jay G.

    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.

    Menu
    Tiffany C.

    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

    Strawberry Matcha
    Serina T.

    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 :)

    For February 2026
    April V.

    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

    Oat Milk latte
    Vanessa C.

    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.

    Miranda J.

    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!!

    Hey waffles! Love waffles.
    Jenny C.

    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.

    Latte and matcha
    Arlene S.

    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

    Banana Caramel Latte
    Jessica S.

    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

    Outpost Latte

    See all

    5 months ago

    Helpful 0
    Thanks 0
    Love this 0
    Oh no 0

    9 months ago

    Helpful 0
    Thanks 0
    Love this 0
    Oh no 1

    4 months ago

    Helpful 1
    Thanks 0
    Love this 0
    Oh no 0

    10 months ago

    Helpful 1
    Thanks 0
    Love this 2
    Oh no 0

    6 months ago

    Helpful 4
    Thanks 2
    Love this 3
    Oh no 0
    Photo of Angela Y.
    290
    10
    9

    2 months ago

    Helpful 0
    Thanks 0
    Love this 0
    Oh no 1

    10 months ago

    Helpful 0
    Thanks 0
    Love this 0
    Oh no 0

    3 months ago

    Helpful 0
    Thanks 0
    Love this 0
    Oh no 0

    5 months ago

    Helpful 0
    Thanks 0
    Love this 0
    Oh no 0

    4 days ago

    Helpful 0
    Thanks 0
    Love this 0
    Oh no 0

    6 months ago

    Helpful 1
    Thanks 0
    Love this 1
    Oh no 0

    6 months ago

    Helpful 0
    Thanks 0
    Love this 0
    Oh no 0

    6 months ago

    Helpful 0
    Thanks 0
    Love this 0
    Oh no 0

    7 months ago

    Helpful 0
    Thanks 0
    Love this 0
    Oh no 0

    3 months ago

    Helpful 0
    Thanks 0
    Love this 0
    Oh no 0

    8 months ago

    Helpful 2
    Thanks 0
    Love this 2
    Oh no 0

    4 months ago

    Helpful 98
    Thanks 33
    Love this 93
    Oh no 0

    3 months ago

    Helpful 1
    Thanks 0
    Love this 0
    Oh no 0
    Photo of P K.
    0
    509
    1032

    4 months ago

    Helpful 0
    Thanks 0
    Love this 0
    Oh no 0

    9 months ago

    Business owner information

    Photo of Zachary K.

    Zachary K.

    Helpful 1
    Thanks 0
    Love this 0
    Oh no 0

    8 months ago

    Helpful 1
    Thanks 0
    Love this 1
    Oh no 0

    9 months ago

    Business owner information

    Photo of Zachary K.

    Zachary K.

    Helpful 0
    Thanks 0
    Love this 0
    Oh no 0

    9 months ago

    Helpful 0
    Thanks 0
    Love this 0
    Oh no 0

    10 months ago

    Helpful 0
    Thanks 0
    Love this 1
    Oh no 0

    8 months ago

    Helpful 0
    Thanks 0
    Love this 0
    Oh no 0

    9 months ago

    Helpful 0
    Thanks 0
    Love this 0
    Oh no 0

    9 months ago

    Helpful 0
    Thanks 0
    Love this 0
    Oh no 0

    5 months ago

    Helpful 0
    Thanks 0
    Love this 0
    Oh no 0
    Photo of Pin H.
    0
    17
    28

    7 months ago

    Helpful 0
    Thanks 0
    Love this 0
    Oh no 0

    9 months ago

    Helpful 1
    Thanks 1
    Love this 1
    Oh no 0

    8 months ago

    Helpful 1
    Thanks 1
    Love this 0
    Oh no 0

    10 months ago

    Helpful 0
    Thanks 0
    Love this 0
    Oh no 0

    10 months ago

    Business owner information

    Photo of Zachary K.

    Zachary K.

    Helpful 0
    Thanks 0
    Love this 0
    Oh no 0
    Photo of Andy E.
    0
    12
    12

    1 month ago

    Helpful 0
    Thanks 0
    Love this 0
    Oh no 0

    3 months ago

    Helpful 0
    Thanks 0
    Love this 0
    Oh no 0

    10 months ago

    Helpful 0
    Thanks 0
    Love this 0
    Oh no 0

    10 months ago

    Helpful 2
    Thanks 1
    Love this 0
    Oh no 0
    Photo of Emily Q.
    564
    25
    10

    2 months ago

    Helpful 0
    Thanks 0
    Love this 0
    Oh no 0

    10 months ago

    Helpful 0
    Thanks 0
    Love this 0
    Oh no 0
    Photo of Lana K.
    30
    171
    325

    10 months ago

    Business owner information

    Photo of Zachary K.

    Zachary K.

    Helpful 0
    Thanks 0
    Love this 0
    Oh no 0

    Page 2 of 5

    Ask the Community - Outpost Coffee

    Do they take cash as payment? Enjoyed the Mugs, but stopped going when they went cashless.

    Yes we take cash at Outpost Coffee.

    View All 2 Questions

    Grid Coffee - Hot Vanilla Latte to go with

    Grid Coffee

    4.3(573 reviews)
    2.5 mi
    $$

    Coffee and matcha: 10/5 -creamy, rich, not too sweet…read moreService great -coffee gets made fast Vibes good - good for studying, seating got cushions now Come here at least one every week

    This review is LONG OVERDUE! :) I've been coming here since December 2021 & it's hands down my…read morefavorite coffee shop in Diamond Bar. I'm a matcha person so I've only ever gotten their matcha, and if not just their strawberry hibiscus (no longer served), herbal tea, and strawberry milk. I love their selection of matcha: strawberry with chunks. One of the best I've had! Their blueberry matcha is pretty delicious also. The customer service is great. Everyone is kind and efficient. I'd say the baristas kind of keep to themselves though and aren't overly enthusiastic. But overall, still welcoming & nice! The atmosphere is simple with wood seating areas. I like it. However sitting for a long duration can be a little uncomfortable since there's not much back support, but luckily they have a basket with padded pillows to sit on. Recently they added tables along the corner nook area which is great! Aside from that they have little tray-like table tops to set your drinks on or laptops/books/etc; while working. There's also plenty of outlets which is a plus. Not to mention they always seem to have a good playlist goin' :) Oh! & they have outside seating as well underneath shaded umbrellas. My only complaint is it gets really hot in there during the hotter months. Especially since they're facing south and catch all the direct light early on in the day. Don't get me wrong, I love the natural lighting! It's just more prone to getting hotter & I'm not sure if they have A/C. I'm sure they probably do but it's never been exactly cold in there like most coffee shops, mainly room temperature. All in all Grid is a great spot! I highly recommend :)

    Photos
    Grid Coffee - Blue lavender latte and strawberry latte

    Blue lavender latte and strawberry latte

    Grid Coffee - Blue lavender latte

    Blue lavender latte

    Grid Coffee - Spanish caffe latte iced

    See all

    Spanish caffe latte iced

    Margin Cafe Coffee Roasters - Inside of the cafe

    Margin Cafe Coffee Roasters

    4.5(300 reviews)
    2.4 mi
    $$

    Was walking after my meal on a Saturday afternoon and stopped by Margin Cafe…read more Saw the Biscoff Latte and immediately wanted that. However I also saw a Butter Pecan Latte and was conflicted. The staff said their biscoff latte is their specialty so i decided to try that drink. It wasn't that sweet and it was bad. Inside is very nice, around 5-6 tables and a couch, with some bar seats near the door and a few benches as well.

    I went to Margin Roasters on a Sunday at around 10:30 AM. Looking for a good study spot with good…read morecoffee, pastries, and WiFi. A few of these expectations were met. For the pastries, it looked like a lot of the ones I was hoping from browsing online were not available. I ended up getting the biscoff cheesecake. It was on the sweeter side but it was very good. For the drink, I ended up getting the banana latte. Been on a streak of getting that lately so wanted to compare with other stores. I didn't get a lot of banana in the taste. At least it had an espresso shot for the caffeine fix and did not taste like the artificial banana. Nothing special there and stand out. For the interior, they had a few seating they primarily accommodated a few groups of four and two. I was able to grab a bench seat that had an outlet. However, there wasn't enough space for my laptop and the items I ordered. WiFi was available but it had a 90 minute limit. The store had a moderate noise level and stayed busy throughout the time that I was there. The service on the order was quick and they do bring it out to you. The store also has their own house espresso which was a medium dark roast. American Express is accepted as a payment option here. Overall, it was a decent work spot. If I come back, I'd prefer to try another drink and hope other pastries are available. Would recommend the biscoff cheesecake for those that want something sweet and the house coffee beans for those that like medium roasts.

    Photos
    Margin Cafe Coffee Roasters - Cold brew

    Cold brew

    Margin Cafe Coffee Roasters
    Margin Cafe Coffee Roasters

    See all

    TP Tea - Tie Guan Yin Milk Tea with Boba

    TP Tea

    4.0(168 reviews)
    1.8 mi
    $$

    Clean, well lit place. Service is excellent plus there is a…read morescreen to show all the customers the progression of your order. Tea is flavor just right. Brewed great.

    Convenient and Customizable -- A Solid Go-To My all-time…read morefavorite boba spot was Sunright Tea Studio, but unfortunately it's closed down, so I've been on the lookout for a replacement -- and this place has become my current go-to. What I love most here is the ordering experience. There are multiple large touchscreens where you can fully customize your drink -- sugar level, ice level, add-ons, substitutions, you name it. I almost always go for zero sugar, and the fact that I can do that easily is a huge plus for me. It's the kind of flexibility that modern boba shops should all offer. The portions are generous and the prices are reasonable, which is refreshing compared to some other spots in the area. Is it the most amazing boba I've ever had? Honestly, no -- but the ability to build your drink exactly the way you want it more than makes up for it. There's also a large display screen showing order status, so you always know when your drink is ready. It's a small touch, but it makes the whole experience feel smooth and stress-free. I'll be real though -- I probably drink more coffee from the Starbucks across the street than boba from here. At the end of the day, coffee feels like the healthier daily habit. But when I'm in the mood for something different, this place is where I'll be.

    Photos
    TP Tea - Interior

    Interior

    TP Tea - Creme brulee

    Creme brulee

    TP Tea

    See all

    Outpost Coffee - coffee - Updated May 2026

    Loading...
    Loading...
    Loading...