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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 12448 Lake Hill 518, 838, 845
Ulster County NY 12449 Lake Katrine 845
Ulster County NY 12453 Malden On Hudson 845
Ulster County NY 12456 Mount Marion 845
Ulster County NY 12457 Mount Tremper 845
Ulster County NY 12458 Napanoch 845
Ulster County NY 12461 Olivebridge 845
Ulster County NY 12464 Phoenicia 845
Ulster County NY 12465 Pine Hill 845
Ulster County NY 12466 Port Ewen 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.