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Zip Code 40243 — Louisville, KY

40243 is a ZIP Code associated with Louisville, KY, located within Jefferson. 40243 ranks #27 out of 38 ZIP codes in Jefferson County by population (and #119 out of 780 in KY). The area supports an estimated population of 12,002 residents across Data Pending housing units, with a population density of 1,128.0 people per square mile.
WorldPlaceData database updated: October 2026

📍 View location on OpenStreetMap (38.239170, -85.531880)

Data MetricLocal Statistic
Postal / Zip Code40243
Primary CityLouisville
State / ProvinceKY
CountyJefferson
Total Population12,002
Median Household IncomeData Pending
Total Housing UnitsData Pending
Population Density1,128.0 people/sq mi
TimezoneAmerica/Kentucky/Louisville

How 40243 Compares

MetricZIP 40243Jefferson CountyKY State Average
Population12,002788,809 (Total)4,542,460 (Total)
Average ZIP IncomeData PendingN/AN/A
Population Density1,128.0 /sq mi----
County Pop Rank#27 of 38----

Nearby ZIP Codes

ZIP CodeCityDistancePopulationMedian Income
Zip 40223Louisville1.7 mi22,798N/A
Zip 40242Louisville4.1 mi11,168N/A
Zip 40245Louisville4.6 mi39,835N/A
Zip 40222Louisville4.7 mi21,470N/A
Zip 40220Louisville5.0 mi35,078N/A

Data Sources & Methodology: Geographic coordinates and ZIP Code assignments are derived from underlying geographic and postal datasets. Note that ZIP Codes are USPS postal delivery areas, while Census ZCTAs are statistical approximation areas. Read full methodology →