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Grid Coffee

Coffee shop · $1 to $10 ·

1139 S Diamond Bar Blvd Ste B, Diamond Bar, CA 91765, United States

Menu and hours last checked

Grid Coffee

About Grid Coffee

Let me introduce you to Grid Coffee Restaurant, a laid-back coffee shop tucked into Diamond Bar that feels instantly familiar while still having its own personality. Located at 1139 S Diamond Bar Blvd Ste B, Diamond Bar, CA 91765, United States, this spot works just as well for a quick caffeine run as it does for lingering over a cup and easing into the day. When you walk in, the vibe is relaxed and welcoming, the kind of place where conversations flow easily and the aroma of fresh coffee sets the tone. Grid Coffee focuses on what matters most-solid coffee done right-so whether you’re stopping by for a bold morning brew or an afternoon pick-me-up, the menu keeps things simple and satisfying. Alongside their coffee offerings, it’s easy to grab a quick bite, which makes it convenient for busy mornings or light breaks between errands. What really stands out is how flexible the experience is; you can enjoy on-site services if you want to settle in, choose dine-in for a casual hangout, or go with takeaway when time is tight. Delivery is also an option, which is great when you want that familiar cup without leaving home or the office. As someone introducing this place, I’d say Grid Coffee fits naturally into the neighborhood, appealing to regulars who appreciate consistency as well as newcomers looking for a dependable coffee shop. It’s not trying to be flashy or overcomplicated, and that’s part of the charm. The focus stays on comfort, approachability, and good coffee, creating a space that feels easy to return to again and again, whether you’re meeting a friend, taking a quiet moment for yourself, or just passing through Diamond Bar in need of a reliable cup. For locals and visitors alike, the coffee shop atmosphere makes it simple to drop in, recharge, and keep moving, while the straightforward offerings ensure the experience stays smooth, familiar, and easy to enjoy without overthinking the menu or the moment.

Where this information comes from

Prices and dish names are transcribed from the restaurant's printed menu, photographed in August 2026 and reproduced on the menu page. Hours, address and service options come from the restaurant's public business profile. An editor confirmed the restaurant was trading on 4 September 2026. Something wrong? Tell us.

Photos

Business info

Service options

  • On-site services
  • Takeaway
  • Dine-in
  • Delivery

Highlights

  • Great coffee
  • Great tea selection

Popular for

  • Solo dining
  • Good for working on laptop

Accessibility

  • Wheelchair-accessible car park
  • Wheelchair-accessible entrance
  • Wheelchair-accessible seating
  • Wheelchair-accessible toilet

Offerings

  • Coffee
  • Quick bite

Dining options

  • Dessert
  • Table service

Amenities

  • Toilet
  • Wi-Fi

Atmosphere

  • Casual
  • Cosy
  • Quiet
  • Trendy

Crowd

  • University students

Planning

  • Accepts reservations

Payments

  • Credit cards
  • Debit cards
  • NFC mobile payments
  • Credit cards

Children

  • Kids' menu

Parking

  • Free of charge street parking
  • Free parking lot
  • Parking

Pets

  • Dogs allowed outside

Opening hours

  • Monday 07:00 AM - 05:30 PM
  • Tuesday 07:00 AM - 05:30 PM
  • Wednesday 07:00 AM - 05:30 PM
  • Thursday 07:00 AM - 05:30 PM
  • Friday 07:00 AM - 05:30 PM
  • Saturday 07:00 AM - 05:30 PM
  • Sunday 07:00 AM - 05:30 PM

Hours can change on public holidays. Call ahead if you are making a special trip.

Location

1139 S Diamond Bar Blvd Ste B, Diamond Bar, CA 91765, United States

Diner notes

4.4 4.4 out of 5 · 164 notes
  • 5 stars 127
  • 4 stars 28
  • 3 stars 19
  • 2 stars 3
  • 1 stars 14
5 out of 5
This coffee shop has a unique interior—simple yet modern—with flexible seating that lets you arrange tables and chairs for comfort and space optimization. The WiFi is reliable, and there are plenty of outlets, making it a great spot for studying. The cafe latte I ordered was reasonably good.
X XY Ate here , 18:18 am
4 out of 5
very aesthetic cafe, love the seating arrangement and minimal interior cool look. matcha was pretty good although slightly on the sweeter side. croffle was really yummy except i wished i asked for it to be warmed up
LL Lucas Lee Ate here , 18:18 am
5 out of 5
Grid coffee is a spot with great coffee and environment for chatting or getting some work done. I went on Saturday at around 9 AM and it wasn’t busy yet. I was able to order right away and get my order within a few minutes. I stayed about 2 hours and it definitely got busier over time. For the drink, I got the Einspanner latte with oat milk. The cream top was sweet, but once you mix it, it’s the right balance. I’d recommend this and would get it again! I was able to grab the table with an outlet right behind me. There was a lot of space for a laptop. There’s also free WiFi available, but it was a bit spotty. The noise level was moderate to high, because the music was loud and there were a lot of customers. The store is located in a shared plaza. There’s plenty of parking spots available before and after my visit. They accept American Express here!
AT Andy Tram Ate here , 18:18 am

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