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/SOUTH-WILLIAMSON

South Williamson ZIP code, Kentucky

The ZIP code for South Williamson, KY is 41503, and its area code is 606.

USPS city name
1 ZIP code
Overlapping the city
1 more
Population
472
Area code
606

Mail addressed to South Williamson uses the ZIP code above. 1 more ZIP code covers part of the city but is addressed as somewhere else; they are listed separately below.

South Williamson in numbers

About 472 people live in South Williamson, in 239 households. The median household income is $56,484 a year, 11% below the Kentucky median of $63,726 (US: $80,734). The median owner-occupied home is valued at $169,800 (17% below the Kentucky median), and median gross rent is $723 a month. The median age is 48.5; 14.4% of adults 25 and over hold a bachelor's degree or higher (27.6% across Kentucky); the average commute takes 39 minutes.

Population472South Williamson472
Households239South Williamson239
Median age48.5South Williamson48.5Kentucky39.1US 38.9
Median household income$56,484South Williamson$56,484Kentucky$63,726US $80,734
Median home value$169,800South Williamson$169,800Kentucky$205,600US $332,700
Median gross rent$723South Williamson$723Kentucky$967US $1,413
Bachelor's degree or higher14.4%South Williamson14.4%Kentucky27.6%US 35.7%
Mean commute39.1 minSouth Williamson39.1 minKentucky24.0 minUS 26.4 min
Population density239 / sq miSouth Williamson239 / sq mi

U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, for the census place South Williamson CDP. Survey estimates carry margins of error, wider for small places. Sources and methods.

ZIP codes addressed as South Williamson

ZIP codes with the USPS city name South Williamson
ZIP City Type Population Median income Median home
41503 South Williamson , KY Standard 472 $56,484 $169,800

Other ZIP codes overlapping South Williamson

These ZIP codes cover part of South Williamson but are addressed as somewhere else.

ZIP codes overlapping South Williamson
ZIP City Type Population Median income Median home
41514 Belfry , KY Standard 2,806 $39,545 $91,300

Map of South Williamson ZIP codes

The ZIP codes of South Williamson, 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 South Williamson

The nearest larger towns are Williamson, WV (2,919 people, 1.2 mi), Matewan, WV (505 people, 7.6 mi) and Red Jacket, WV (482 people, 8.6 mi).

Towns near South Williamson
TownPopulationDistance
Williamson, WV 2,919 1.2 mi
Pikeville 7,490 18.4 mi
Prestonsburg 3,765 26.2 mi

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

Cite this page

zipcodes.pro. “South Williamson, KY ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/city/ky/south-williamson

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