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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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La Porte County ZIP Codes

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

County State ZIP Code City Area Codes
La Porte County IN 46352 La Porte 219
La Porte County IN 46361 Michigan City 219

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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.