Montclair, CA ZIP Code
Montclair, California has one ZIP code: .
Mail addressed to Montclair covers nearby places too.
Where the 91763 ZIP code reaches
Tap or point to an area to see its ZIP code.Full-size map
Dashed line: Montclair city limits.
Map: Census Bureau ZIP Code Tabulation Areas (2020) and place limits (2024).
Check an address in Montclair
Street ranges from the Census Bureau, 2026. PO box and organization ZIP codes are not found by street. A new street may be missing: address not found?
ZIP codes from nearby towns that reach into Montclair
- 91762, mailing town Ontario, covers 5 percent of Montclair
Why your mail may say Montclair when you live outside it
A letter addressed to Montclair can go to a home outside the city limits, because ZIP areas follow delivery routes, not town lines.
The reverse happens too: parts of Montclair use 91762, which mails under a neighboring town's name.
A ZIP code does not set your city, school district or tax. San Bernardino County property records show which city you are in.
Montclair ZIP code questions
What is the main ZIP code for Montclair?
91763, the ZIP code of the main Montclair post office at 5186 Benito St.
What county is Montclair in?
San Bernardino County.
ZIP codes for towns near Montclair
More towns near Montclair: San Dimas, Diamond Bar, Rancho Cucamonga, Chino Hills, Glendora, Eastvale, Covina, West Covina, Rowland Heights.
Sources and last checked
USPS ZIP Locale Detail (October 1, 2026), GeoNames (CC BY 4.0), U.S. Census Bureau, HUD-USPS crosswalk.
Checked October 20, 2026. Sources · How we build our lists · Corrections