ZIP Code 91730: Rancho Cucamonga, CA
County: San Bernardino County
Coordinates: 34.10700, -117.59410
ZIP Type: Standard
Time Zone: Pacific Time (PT)
This profile provides an in-depth look at ZIP code 91730, serving Rancho Cucamonga in CA. It lies in San Bernardino County and supports delivery, planning, and address verification.
| Primary City | Rancho Cucamonga |
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| ZIP Code | 91730 |
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| County | San Bernardino County |
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| State | CA |
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| Latitude / Longitude | 34.10700, -117.59410 |
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| ZIP Type | Standard |
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| Time Zone | Pacific Time (PT) |
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| Data Updated | 2026-01-08 |
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Maps & Useful Links
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These links show the approximate center point for ZIP 91730 (not an exact boundary).
Geographic & Administrative Context
For mapping and verification, 91730 is commonly represented around 34.10700, -117.59410. These coordinates help identify the general area within San Bernardino County, CA.
Local Coverage Notes
ZIP codes can cover multiple neighborhoods and unincorporated areas. Use ZIP 91730 for mail delivery and general location reference in
San Bernardino County,
CA.
Coverage may include nearby neighborhoods and adjacent unincorporated areas commonly associated with Rancho Cucamonga.
Related ZIP Codes (Nearby)
Explore other postal codes near Rancho Cucamonga within CA.
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Frequently Asked Questions
What is the primary city for ZIP code 91730?
The primary city for this ZIP code is Rancho Cucamonga, located in CA.
In which county is 91730 located?
ZIP code 91730 is situated within San Bernardino County, CA.
What are the coordinates for 91730?
The approximate center point is 34.10700 (Latitude) and -117.59410 (Longitude).
Is ZIP code 91730 active?
This page lists ZIP 91730 as Listed based on the latest refresh date shown above.
Does ZIP 91730 cover multiple areas?
Yes. Many ZIP codes cover multiple neighborhoods or nearby areas. For exact boundaries, use official mapping tools.
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Methodology & Data Notes
How we build this page: We generate this page from a structured ZIP dataset and refresh key fields (city, county, and coordinates) during scheduled updates. Coordinates represent an approximate center point, not an official boundary map.
Sources: Public ZIP reference datasets and geographic coordinate references. If you use specific sources (e.g., USPS, Census), list them on your About/Methodology page.
Page updated: 2026-01-08