DTG Printing in Diamond Bar, CA
Diamond Bar is about 8 miles southwest of Merch Mob's shop in Montclair, CA, a straight-line distance. At 9% of residents aged 3 and up, higher-education enrollment in Diamond Bar tops California's 8% and the nation's 7% (Census ACS, 2020-2024), so short DTG runs for campus groups and student events earn a place.

Diamond Bar by the numbers
Diamond Bar has 51,884 residents, 6% fewer than in 2020 (Census estimates). Los Angeles County as a whole has 9,694,934 residents, down 3.2% since 2020.
Los Angeles County counts 3,044 clothing stores, 770 musical groups and artists, 3,726 snack and nonalcoholic beverage bars and 422 sporting goods stores with paid employees (Census County Business Patterns 2023). Clothing Brands · Bands · Coffee Shops · Skate and Surf Shops
Diamond Bar shares the shop's Pacific time zone.
- Population, 2025
- 51,884
- Since 2020
- −6%
- County
- Los Angeles County
- Median age
- 45.7 (US 38.9)
- In college or grad school
- 9% (US 7%)
- From the shop
- 8 mi southwest
- USPS zone from the shop
- 1
- Warmest month, average high
- August, 96°F
- Coldest month, average low
- December, 40°F
- Days at 90°F or hotter, a year
- 99
- Nights at 32°F or colder, a year
- 11
- Rain, a year
- 10 in
Weather: Chino Airport station, 11 mi from Diamond Bar's center (NOAA 1991-2020 Climate Normals). People: Census ACS 2020-2024. Population: Census, July 2025. Counts: CBP 2023, by county.
DTG printing through Diamond Bar's year
With 11 months averaging a high of 70°F or more, tees carry most DTG orders, and ring-spun cotton prints sharpest. On about 11 nights a year the low reaches 32°F or below, so add cotton crewnecks, whose pocketless front fits a bigger print. On the roughly 23 days a year that reach 100°F, a dark shirt's white underbase makes a big print breathe less, so keep full-front art on light colors. About 10 inches of rain a year leaves most weekends dry for events, and DTG prints their small runs, a date or name on each shirt.
Diamond Bar's weather figures come from the same NOAA stations as Corona's (Chino Airport), so the month-by-month table is on the Corona page.
DTG Printing for Diamond Bar
DTG printing pages for nearby cities: Pomona (5 mi).
From the production floor
Merch Mob production in Montclair, CA.




DTG Printing in Diamond Bar
What should a DTG order in Diamond Bar be printed on?
Cotton tees for the hot summers, plus a cotton-face hoodie for the chilly winter nights.
How far is Diamond Bar from the shop?
Diamond Bar is about 8 miles southwest of Merch Mob's shop in Montclair, CA, a straight-line distance. From the shop's ZIP code, it is USPS zone 1. Orders ship; there is no pickup.
Let’s build
your next drop.
Tell us what you are making. The quote comes back within 24 hours, from Merch Mob's shop about 8 miles away from Diamond Bar.