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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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Ottawa County ZIP Codes

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

County State ZIP Code City Area Codes
Ottawa County OH 43440 Lakeside Marblehead 419, 567
Ottawa County OH 43445 Martin 419, 567
Ottawa County OH 43446 Middle Bass 419, 567
Ottawa County OH 43449 Oak Harbor 419, 567
Ottawa County OH 43452 Port Clinton 419, 567
Ottawa County OH 43456 Put In Bay 419, 567
Ottawa County OH 43458 Rocky Ridge 419, 567
Ottawa County OH 43468 Williston 419, 567
Ottawa County OK 74335 Cardin 918
Ottawa County OK 74339 Commerce 539, 918
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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.