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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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Montgomery County ZIP Codes

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

County State ZIP Code City Area Codes
Montgomery County TX 77357 New Caney 281, 346, 713, 832, 936
Montgomery County TX 77362 Pinehurst 281, 346, 713, 832
Montgomery County TX 77365 Porter 281, 346, 713, 832
Montgomery County TX 77372 Splendora 281, 346, 713, 832, 936
Montgomery County TX 77378 Willis 281, 346, 713, 832, 936
Montgomery County TX 77380 Spring 281, 346, 713, 832
Montgomery County TX 77381 Spring 281, 346, 713, 832, 936
Montgomery County TX 77382 Spring 281, 346, 713, 832, 936
Montgomery County TX 77384 Conroe 281, 346, 713, 832, 936
Montgomery County TX 77385 Conroe 281, 346, 713, 832, 936
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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.