Every ZIP code in the United States, with weather, radar, trivia and the numbers behind it. Five digits since 1963!

ZIP stands for Zone Improvement Plan. The codes went live on July 1, 1963.The lowest ZIP code is 00501 — the IRS in Holtsville, New York.The highest ZIP code is 99950, in Ketchikan, Alaska.Type 07734 into a calculator and turn it upside down: hELLO. It is Keansburg, New Jersey.12345 belongs to one company: General Electric in Schenectady, New York.The first digit is a region: 0 is New England and New Jersey, 9 is the West Coast, Alaska and Hawaii.Mr. ZIP, the cartoon mailman, was the mascot that sold the idea to America.ZIP+4 arrived in 1983 and can narrow a ZIP down to one side of one block.A ZIP code is a mail route, not a place: plenty of them cross county and even state lines.Play ZIP Hunt: guess the secret ZIP code of the day in six tries.
zipcodes.pro — CITY/KY/THORNTON

Thornton ZIP code, Kentucky

The ZIP code for Thornton, KY is 41855, and its area code is 606.

USPS city name
1 ZIP code
Population
711
Area code
606

NANPA lists no telephone rate centre for Thornton itself, so these are the area codes of the nearest one, Neon (3.8 miles). A town on an area-code boundary can differ from its neighbour.

Thornton in numbers

About 711 people live in Thornton, in 315 households. The median household income is $59,132 a year, 7% below the Kentucky median of $63,726 (US: $80,734). The median owner-occupied home is valued at $44,000 (79% below the Kentucky median).

Population711Thornton711
Households315Thornton315
Median household income$59,132Thornton$59,132Kentucky$63,726US $80,734
Median home value$44,000Thornton$44,000Kentucky$205,600US $332,700

U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, for the ZIP code addressed as Thornton. Survey estimates carry margins of error, wider for small places. Sources and methods.

ZIP codes addressed as Thornton

ZIP codes with the USPS city name Thornton
ZIP City Type Population Median income Median home
41855 Thornton , KY Standard 711 $59,132 $44,000

Map of Thornton ZIP codes

41855

The ZIP codes of Thornton, KY, shaded. Outlines are Census ZIP Code Tabulation Areas (2020), which approximate the mail routes; PO-box and single-address codes have no area and are not drawn. Click any area to open its ZIP code.

Towns near Thornton

The nearest larger towns are Whitesburg (1,761 people, 4.5 mi), Jenkins (1,406 people, 7.4 mi) and Pound, VA (913 people, 10 mi).

Towns near Thornton
TownPopulationDistance
Wise, VA 2,916 17.6 mi
Norton, VA 3,577 18.9 mi
Big Stone Gap, VA 5,162 21.6 mi
Hazard 5,008 23.6 mi
Pikeville 7,490 25.1 mi

More nearby: every ZIP code in Letcher County · Kentucky ZIP codes

Cite this page

zipcodes.pro. “Thornton, KY ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/city/ky/thornton

Underlying data is public domain or openly licensed — sources, vintages and licences.