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/CLAY

Clay ZIP code, Kentucky

The ZIP code for Clay, KY is 42404, and its area code is 270.

USPS city name
1 ZIP code
Population
996
Area code
270

Clay in numbers

About 996 people live in Clay, in 413 households. The median household income is $61,250 a year, 4% below the Kentucky median of $63,726 (US: $80,734). The median owner-occupied home is valued at $74,400 (64% below the Kentucky median), and median gross rent is $772 a month. The median age is 36.0; 18.5% of adults 25 and over hold a bachelor's degree or higher (27.6% across Kentucky); the average commute takes 35 minutes.

Population996Clay996
Households413Clay413
Median age36.0Clay36.0Kentucky39.1US 38.9
Median household income$61,250Clay$61,250Kentucky$63,726US $80,734
Median home value$74,400Clay$74,400Kentucky$205,600US $332,700
Median gross rent$772Clay$772Kentucky$967US $1,413
Bachelor's degree or higher18.5%Clay18.5%Kentucky27.6%US 35.7%
Mean commute35.0 minClay35.0 minKentucky24.0 minUS 26.4 min
Population density1,155 / sq miClay1,155 / sq mi

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

ZIP codes addressed as Clay

ZIP codes with the USPS city name Clay
ZIP City Type Population Median income Median home
42404 Clay , KY Standard 2,109 $61,293 $115,300

Map of Clay ZIP codes

The ZIP codes of Clay, 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 Clay

The nearest larger towns are Providence (2,857 people, 6.5 mi), Dixon (1,036 people, 7.7 mi) and Sturgis (1,864 people, 10 mi).

Towns near Clay
TownPopulationDistance
Providence 2,857 6.5 mi
Morganfield 3,185 15.1 mi
Marion 2,886 17.4 mi
Madisonville 19,515 19.7 mi
Princeton 6,241 25.8 mi
Henderson 27,852 28.3 mi

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

Cite this page

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

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