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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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Onslow County ZIP Codes

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

County State ZIP Code City Area Codes
Onslow County NC 28445 Holly Ridge 472, 910
Onslow County NC 28454 Maple Hill 472, 910
Onslow County NC 28460 Sneads Ferry 472, 910
Onslow County NC 28539 Hubert 472, 910
Onslow County NC 28540 Jacksonville 472, 910
Onslow County NC 28541 Jacksonville 910
Onslow County NC 28542 Camp Lejeune 472, 910
Onslow County NC 28543 Tarawa Terrace 472, 910
Onslow County NC 28544 Midway Park 472, 910
Onslow County NC 28545 Mccutcheon Field 910
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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.