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/ST-JOSEPH

St. Joseph ZIP codes, Kentucky

No ZIP code is named for St. Joseph, KY; addresses there use a neighbouring town's name. 2 ZIP codes cover it: 42301 and 42356. Its area codes are 270 and 364.

USPS city name
0 ZIP codes
Overlapping the city
2 more
Population
144
Area codes
270, 364

NANPA lists no telephone rate centre for St. Joseph itself, so these are the area codes of the nearest one, Owensboro (0.0 miles). A town on an area-code boundary can differ from its neighbour.

ZIP codes covering St. Joseph

These ZIP codes cover part of St. Joseph but are addressed as somewhere else.

ZIP codes overlapping St. Joseph
ZIP City Type Population Median income Median home
42301 Owensboro , KY Standard 45,445 $66,885 $198,200
42356 Maple Mount , KY Standard 132 — —

Map of St. Joseph ZIP codes

4230142356

The ZIP codes of St. Joseph, 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 St. Joseph

The nearest larger towns are Beech Grove (291 people, 5.9 mi), Moseleyville (269 people, 7.3 mi) and Sorgho (2,960 people, 7.3 mi).

Towns near St. Joseph
TownPopulationDistance
Sorgho 2,960 7.3 mi
Owensboro 60,302 12.4 mi
Masonville 2,887 15.0 mi
Henderson 27,852 17.1 mi
Thruston 2,581 18.2 mi
Newburgh, IN 3,395 18.2 mi
Evansville, IN 116,116 23.3 mi
Chandler, IN 3,978 24.0 mi
Boonville, IN 6,702 24.6 mi
Melody Hill, IN 3,243 25.1 mi
Madisonville 19,515 26.1 mi
Highland, IN 5,114 27.6 mi
Hartford 2,649 29.1 mi
Central City 5,707 29.4 mi

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

Cite this page

zipcodes.pro. “St. Joseph, KY ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/city/ky/st-joseph

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