ZIP Code 91009: Duarte, CA
County: Los Angeles County
Coordinates: 34.13950, -117.97730
ZIP Type: Standard
Time Zone: Pacific Time (PT)
Explore detailed information for ZIP code 91009 in Duarte, CA. We include verified county details for Los Angeles County plus key geographic references used for mapping and logistics.
| Primary City | Duarte |
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| ZIP Code | 91009 |
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| County | Los Angeles County |
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| State | CA |
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| Latitude / Longitude | 34.13950, -117.97730 |
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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 91009 (not an exact boundary).
Geographic & Administrative Context
Coordinates for 91009 are listed as 34.13950 / -117.97730, useful for GPS and service checks in and around Duarte, CA.
Local Coverage Notes
ZIP codes can cover multiple neighborhoods and unincorporated areas. Use ZIP 91009 for mail delivery and general location reference in
Los Angeles County,
CA.
Coverage may include nearby neighborhoods and adjacent unincorporated areas commonly associated with Duarte.
Related ZIP Codes (Nearby)
Explore other postal codes near Duarte within CA.
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Frequently Asked Questions
What is the primary city for ZIP code 91009?
The primary city for this ZIP code is Duarte, located in CA.
In which county is 91009 located?
ZIP code 91009 is situated within Los Angeles County, CA.
What are the coordinates for 91009?
The approximate center point is 34.13950 (Latitude) and -117.97730 (Longitude).
Is ZIP code 91009 active?
This page lists ZIP 91009 as Listed based on the latest refresh date shown above.
Does ZIP 91009 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