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/PRINCETON

Princeton ZIP code, Kentucky

The ZIP code for Princeton, KY is 42445, and its area codes are 270 and 364.

USPS city name
1 ZIP code
Population
6,241
Area codes
270, 364

Princeton in numbers

About 6,241 people live in Princeton, in 2,367 households. The median household income is $47,411 a year, 26% below the Kentucky median of $63,726 (US: $80,734). The median owner-occupied home is valued at $96,600 (53% below the Kentucky median), and median gross rent is $762 a month. The median age is 40.5; 16.7% of adults 25 and over hold a bachelor's degree or higher (27.6% across Kentucky); the average commute takes 21 minutes.

Population6,241Princeton6,241
Households2,367Princeton2,367
Median age40.5Princeton40.5Kentucky39.1US 38.9
Median household income$47,411Princeton$47,411Kentucky$63,726US $80,734
Median home value$96,600Princeton$96,600Kentucky$205,600US $332,700
Median gross rent$762Princeton$762Kentucky$967US $1,413
Bachelor's degree or higher16.7%Princeton16.7%Kentucky27.6%US 35.7%
Mean commute21.0 minPrinceton21.0 minKentucky24.0 minUS 26.4 min
Population density695 / sq miPrinceton695 / sq mi

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

ZIP codes addressed as Princeton

ZIP codes with the USPS city name Princeton
ZIP City Type Population Median income Median home
42445 Princeton , KY Standard 10,533 $55,096 $118,100

Map of Princeton ZIP codes

42445

The ZIP codes of Princeton, 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 Princeton

The nearest larger towns are Madisonville (19,515 people, 27 mi), Hopkinsville (30,906 people, 29 mi) and Fort Campbell North (11,356 people, 38 mi).

Towns near Princeton
TownPopulationDistance
Eddyville 2,897 10.7 mi
Cadiz 2,677 17.3 mi
Marion 2,886 18.9 mi
Providence 2,857 21.5 mi
Madisonville 19,515 26.5 mi
Calvert City 2,526 28.5 mi
Hopkinsville 30,906 29.3 mi

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

Cite this page

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

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