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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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Ulster County ZIP Codes

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

County State ZIP Code City Area Codes
Ulster County NY 12542 Marlboro 845
Ulster County NY 12547 Milton 845
Ulster County NY 12548 Modena 845
Ulster County NY 12561 New Paltz 845
Ulster County NY 12566 Pine Bush 845
Ulster County NY 12568 Plattekill 845
Ulster County NY 12588 Walker Valley 845
Ulster County NY 12589 Wallkill 845
Ulster County NY 12725 Claryville 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.