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U.S. ZIP Codes Database 2026

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West Baton Rouge Parish ZIP Codes

Browse all ZIP Codes, cities, and associated area codes registered in West Baton Rouge Parish.

County State ZIP Code City Area Codes
West Baton Rouge Parish LA 70710 Addis 225
West Baton Rouge Parish LA 70719 Brusly 225
West Baton Rouge Parish LA 70729 Erwinville 225
West Baton Rouge Parish LA 70767 Port Allen 225

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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.