Find the last 4 digits (ZIP+4) for an address in 91730

ZIP 91730, Rancho Cucamonga, CA is filled in. Just type the street address.

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ZIP Code 91730 – Rancho Cucamonga, CA

Rancho Cucamonga, California · San Bernardino County · Pacific time

ZIP code91730
CityRancho Cucamonga
StateCalifornia
CountySan Bernardino County
Population71,613
Time zonePacific · local time
ZIP typeStandard (has a Census ZCTA area)
Land area13.73 sq mi
Center (lat, long)34.1004, -117.5813

Area codes in this area

840909

These are the area codes that most often serve ZIP 91730 (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

91729 Rancho Cucamonga · 0.8 mi91764 Ontario · 2.3 mi91743 Guasti · 2.5 mi91701 Rancho Cucamonga · 2.8 mi91737 Rancho Cucamonga · 3.8 mi91785 Upland · 4.5 mi91761 Ontario · 4.5 mi91786 Upland · 4.6 mi

About ZIP 91730

ZIP code 91730 is assigned to Rancho Cucamonga, California. It lies in San Bernardino County. Its Census area covers about 13.73 square miles of land. The closest neighboring ZIP is 91729 (Rancho Cucamonga), about 0.8 miles away.

Every address in 91730 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