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U.S. ZIP Codes Database 2026

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Powell County ZIP Codes

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

County State ZIP Code City Area Codes
Powell County KY 40312 Clay City 606, 859
Powell County KY 40376 Slade 606
Powell County KY 40380 Stanton 606, 859
Powell County MT 59713 Avon 406
Powell County MT 59722 Deer Lodge 406
Powell County MT 59728 Elliston 406
Powell County MT 59731 Garrison 406
Powell County MT 59733 Gold Creek 406
Powell County MT 59843 Helmville 406
Powell County MT 59854 Ovando 406

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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.