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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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Kennebec County ZIP Codes

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

County State ZIP Code City Area Codes
Kennebec County ME 04345 Gardiner 207
Kennebec County ME 04346 Randolph 207
Kennebec County ME 04347 Hallowell 207
Kennebec County ME 04349 Kents Hill 207
Kennebec County ME 04350 Litchfield 207
Kennebec County ME 04351 Manchester 207
Kennebec County ME 04352 Mount Vernon 207
Kennebec County ME 04355 Readfield 207
Kennebec County ME 04358 South China 207
Kennebec County ME 04359 South Gardiner 207
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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.