Find the last 4 digits (ZIP+4) for an address in 91739

ZIP 91739, Rancho Cucamonga, CA is filled in. Just type the street address.

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ZIP Code 91739 – Rancho Cucamonga, CA

Rancho Cucamonga, California · San Bernardino County · Pacific time

ZIP code91739
CityRancho Cucamonga
StateCalifornia
CountySan Bernardino County
Population41,673
Time zonePacific · local time
ZIP typeStandard (has a Census ZCTA area)
Land area28.42 sq mi
Center (lat, long)34.1564, -117.5169

Area codes in this area

840909

These are the area codes that most often serve ZIP 91739 (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

91737 Rancho Cucamonga · 3.5 mi92336 Fontana · 3.5 mi91701 Rancho Cucamonga · 4.9 mi91730 Rancho Cucamonga · 5.3 mi92331 Fontana · 5.5 mi91729 Rancho Cucamonga · 5.6 mi92335 Fontana · 5.6 mi92334 Fontana · 6.4 mi

About ZIP 91739

ZIP code 91739 is assigned to Rancho Cucamonga, California. It lies in San Bernardino County. Its Census area covers about 28.42 square miles of land. The closest neighboring ZIP is 91737 (Rancho Cucamonga), about 3.5 miles away.

Every address in 91739 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