Town & public services in Diamond Bar
21 places, local favorites first.
Sort: Local favorites · A to Z
Los Angeles County Fire Department Station 120
Fire department · 1051 Grand Ave
South Coast Air Quality Management District - South Coast AQMD
Central government office · 21865 Copley Dr
Diamond Bar Mail And Shipping
Post office · 1243 S Diamond Bar Blvd
Falcon Logistics Global
Transportation · 667 S Brea Canyon Rd Ste 20B
Los Angeles County Fire Dept. Station 121
Fire department · 346 Armitos Pl
United States Postal Service
Post office · 23545 Palomino Dr Ste A
County Of Los Angeles
Central government office · 22620 Red Fir Ln
Caltrans, Office Of Bridge Design South
Central government office · 21073 Pathfinder Rd
Los Angeles County Parks & Recreation Dept
Central government office · 22751 Golden Springs Dr
On the map
Where these 21 places are in Diamond Bar.
Talk & tips
Favorites, openings and closings from Diamond Bar neighbors.
Weigh in
Is TOUS les JOURS Bakery Café - Diamond Bar the best coffee in Diamond Bar?
Your answer becomes a post in Town Square.
What’s missing?
Not on the map yet. It may just be missing.
No brewery listed ·
Share a tip
Some place details from Overture Maps (CDLA-Permissive-2.0), checked against the Census town line. Places added by neighbors go live once a second neighbor confirms them. Spot a mistake? Open the place and tap Edit mode.
How we sort and count
Each list puts neighbor favorites first (ratings and photos), then the most complete listings (a website, a phone number, a note), with local, independent spots ahead of national chains. Categories come from each place’s map category, so a café filed under “Shops” still shows up with the cafés. “A five-minute walk” is a quarter mile from the busiest spot on the map. Per-1,000 figures use the Census population.