ZIP code · Rancho Cucamonga · California · United States

ZIP code 91730 — Rancho Cucamonga

Name: Rancho Cucamonga (91730)
Address: California, 91730, US

ZIP code 91730 serves Rancho Cucamonga, California.

Postal code: 91730
Single source Value from one source, not cross-checked.
City: Rancho Cucamonga
County: San Bernardino
State: California
Country: United States
Coordinates: 34.1070, -117.5941 — precision precise (locality)
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Nearby localities

91701Rancho Cucamonga
91729Rancho Cucamonga
91737Rancho Cucamonga
91739Rancho Cucamonga

About this page

US ZIP codes have five digits. They are postal routing areas, not administrative boundaries: a ZIP can span more than one city or county, and the city shown is the primary USPS name for that code.

GeoNames. Data generated on 2026-08-21. Methodology · Report an error on this page