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U.S. ZIP Codes Database 2026

Search by ZIP code, city, county, or state and find clear postal details with maps, time zones, and area code data.

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Onondaga County ZIP Codes

Browse all ZIP Codes, cities, and associated area codes registered in Onondaga County.

County State ZIP Code City Area Codes
Onondaga County NY 13225 Syracuse 315
Onondaga County NY 13235 Syracuse 315
Onondaga County NY 13244 Syracuse 315, 680
Onondaga County NY 13250 Syracuse 315
Onondaga County NY 13251 Syracuse 315
Onondaga County NY 13252 Syracuse 315
Onondaga County NY 13261 Syracuse 315
Onondaga County NY 13290 Syracuse 315, 680
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About U.S. ZIP Codes

ZIP codes are a United States Postal Service system introduced in 1963 to make mail routing more accurate and efficient. The standard format uses five digits, while ZIP+4 adds four more digits for a more precise delivery segment.

ZIP codes cover the United States, its territories, military mail routes, and other USPS delivery points. This directory organizes that data for practical lookup by ZIP code, city, county, and state.