Find the last 4 digits (ZIP+4) for an address in 91761

ZIP 91761, Ontario, CA is filled in. Just type the street address.

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ZIP Code 91761 – Ontario, CA

Ontario, California · San Bernardino County · Pacific time

ZIP code91761
CityOntario
StateCalifornia
CountySan Bernardino County
Population62,935
Time zonePacific · local time
ZIP typeStandard (has a Census ZCTA area)
Land area28.49 sq mi
Center (lat, long)34.0356, -117.5915

Area codes in this area

840909

These are the area codes that most often serve ZIP 91761 (including overlays). The exact area code depends on the phone number — landlines, mobiles and overlays can differ even on the same street.

Map

Nearby ZIP codes

91743 Guasti · 2 mi91764 Ontario · 2.8 mi91758 Ontario · 3.9 mi91752 Mira Loma · 4.4 mi91730 Rancho Cucamonga · 4.5 mi91762 Ontario · 4.7 mi91729 Rancho Cucamonga · 4.9 mi91710 Chino · 5.6 mi

About ZIP 91761

ZIP code 91761 is assigned to Ontario, California. It lies in San Bernardino County. Its Census area covers about 28.49 square miles of land. The closest neighboring ZIP is 91743 (Guasti), about 2 miles away.

Every address in 91761 also has a 4-digit add-on code (ZIP+4) that points to a smaller delivery area. Use the box above to find it.

Sources: US Census Bureau (ZCTA, county relationship files), GeoNames (CC BY 4.0), NANPA via NumberResearch.org (CC BY 4.0). Map © OpenStreetMap contributors. ZIP areas are approximate. Population: U.S. Census Bureau, ACS 5-year estimates, 2024 (ZCTA). Data sources