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USPS city
Spanish Flat, CA ZIP codes
1 ZIP code that list Spanish Flat as a USPS primary or acceptable city. Not a Census place.
Sum of ZCTA populations for ZIP codes intersecting Spanish Flat. Not a Census place total. Methodology
Combined population of ZIP/ZCTAs that list this USPS city as a primary or acceptable name. This is a labeled ZIP-sum, never a Census place ACS population. Methodology
Map of Spanish Flat, CA

ZIP codes associated with Spanish Flat
| ZIP | City | County | Population | Income |
|---|---|---|---|---|
| 94558 | Napa | Napa County | 64,552 | $109,444 |