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/MIDDLETOWN

Middletown ZIP codes, Kentucky

No ZIP code is named for Middletown, KY; addresses there use a neighbouring town's name. 4 ZIP codes cover it: 40299, 40245, 40223 and 40243. Its area code is 502.

USPS city name
0 ZIP codes
Overlapping the city
4 more
Population
9,763
Area code
502

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

Middletown in numbers

About 9,763 people live in Middletown, in 4,405 households, the 49th-largest of Kentucky's 553 census places. The median household income is $82,537 a year, 30% above the Kentucky median of $63,726 (US: $80,734). The median owner-occupied home is valued at $336,000 (63% above the Kentucky median), and median gross rent is $1,502 a month. The median age is 42.0; 53.2% of adults 25 and over hold a bachelor's degree or higher (27.6% across Kentucky); the average commute takes 19 minutes.

Population9,763Middletown9,763
Households4,405Middletown4,405
Median age42.0Middletown42.0Kentucky39.1US 38.9
Median household income$82,537Middletown$82,537Kentucky$63,726US $80,734
Median home value$336,000Middletown$336,000Kentucky$205,600US $332,700
Median gross rent$1,502Middletown$1,502Kentucky$967US $1,413
Bachelor's degree or higher53.2%Middletown53.2%Kentucky27.6%US 35.7%
Mean commute18.7 minMiddletown18.7 minKentucky24.0 minUS 26.4 min
Population density1,901 / sq miMiddletown1,901 / sq mi

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

ZIP codes covering Middletown

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

ZIP codes overlapping Middletown
ZIP City Type Population Median income Median home
40223 Louisville , KY Standard 22,798 $96,607 $362,500
40243 Louisville , KY Standard 12,002 $77,587 $323,200
40245 Louisville , KY Standard 39,835 $122,948 $445,300
40299 Louisville , KY Standard 42,207 $89,440 $290,200

Map of Middletown ZIP codes

40223402434024540299

The ZIP codes of Middletown, 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 Middletown

The nearest larger towns are Jeffersontown (29,199 people, 3.7 mi), Lyndon (11,030 people, 3.9 mi) and St. Matthews (17,577 people, 6.4 mi).

Towns near Middletown
TownPopulationDistance
Douglass Hills 5,474 1.8 mi
Anchorage 2,506 2.1 mi
Jeffersontown 29,199 3.7 mi
Hurstbourne 4,702 3.8 mi
Lyndon 11,030 3.9 mi
Graymoor-Devondale 2,802 5.6 mi
St. Matthews 17,577 6.4 mi
Crestwood 6,356 7.4 mi
Prospect 4,542 8.7 mi
Louisville/Jefferson County metro government 631,818 8.7 mi
Indian Hills 2,897 8.7 mi
Simpsonville 3,062 9.6 mi
Buckner 4,119 10.9 mi
Jeffersonville, IN 51,043 11.4 mi

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

Cite this page

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

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