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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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Sullivan County ZIP Codes

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

County State ZIP Code City Area Codes
Sullivan County NY 12738 Glen Wild 845
Sullivan County NY 12740 Grahamsville 845
Sullivan County NY 12741 Hankins 272, 570, 845
Sullivan County NY 12742 Harris 845
Sullivan County NY 12743 Highland Lake 845
Sullivan County NY 12745 Hortonville 845
Sullivan County NY 12747 Hurleyville 845
Sullivan County NY 12748 Jeffersonville 845
Sullivan County NY 12749 Kauneonga Lake 845
Sullivan County NY 12750 Kenoza Lake 845
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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.