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US ZIP Code Profile

ZIP Code 40242
Louisville, Kentucky

ZIP code 40242 is in Louisville, located in Jefferson County, Kentucky, within the Louisville/Jefferson County metro area. Its 2020 Census population was 10,686. The estimated median adjusted gross income per tax return is $55,824, and about 7% of filers report $200,000 or more.

2020 Population
10,686
Census ZCTA
County
Jefferson
FIPS 21111
Median income (est.)
$55,824
IRS SOI 2022
Land Area
2.667 mi²
+ 0.012 mi² water

01Location & Geography

Authoritative geographic identifiers from the U.S. Census Bureau, ANSI, and FIPS standards.

Primary CityLouisville, KY
CountyJefferson County (FIPS 21111)
StateKentucky (FIPS 21)
Metro Area (MSA)Louisville/Jefferson County, KY-IN Metro Area (31140)
Census Region / DivisionSouth Region · East South Central Division
Coordinates38.27747, -85.590515
Land / Water Area2.667 mi² land · 0.012 mi² water

02Income & Economics

Distribution of the 5,310 individual tax returns filed in 40242 by adjusted gross income bracket (IRS SOI, 2022).

< $25K
22.8%
$25K–$50K
23.4%
$50K–$75K
16.6%
$75K–$100K
10.7%
$100K–$200K
19.6%
$200K+
7.0%
The $200,000+ bracket accounts for 28% of 40242's total adjusted gross income, from 7% of returns — a concentration that drives the gap between the median ($55,824) and the average.
Estimated median = median adjusted gross income per tax return, interpolated from IRS SOI brackets. Differs from U.S. Census household income.

03Income Over Time

Year-over-year change in 40242's IRS income metrics, 2020–2022.

Median income (2021→2022)
$55,824
▲ 6.6%
Filers earning $200K+
7.0%
▲ 0.5 pt
Total filers
5,310
▲ 0.4%
GET /zipc/v2/zipcodes/40242/soi?year=… $49K 2020 $52K 2021 $56K 2022
Median = adjusted gross income per return, interpolated from IRS SOI brackets. Figures are nominal (not inflation-adjusted).

04Population Trend

Decennial U.S. Census population for the 40242 ZCTA.

2000
10,349
 
2010
10,930
▲ +5.6%
2020
10,686
▼ -2.2%

05Nearby ZIP Codes — Live Radius Search

Drag the slider to filter ZIP codes by distance from 40242. Powered by the same radius endpoint developers call from the API.

GET /zipc/v2/radius

ZIP codes within range of 40242

Louisville and its immediate neighbors, sorted by distance.

3 mi
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Distance from 40242 to any ZIP

Enter a 5-digit ZIP to calculate the distance.

06USPS Postal Details

Delivery and facility attributes from the monthly USPS dataset.

ZIP ClassificationNon-Unique Zip
Facility TypePost Office
Carrier Route SortD
USPS Finance Number204788
City AliasesLouisville, Lyndon, Briarwood, Langdon Place, Meadow Vale, Murray Hill, Old Brownsboro Place, Plantation, Rolling Hills, Old Brownsbro

07Frequently Asked Questions

What county is ZIP code 40242 in?

ZIP code 40242 is in Jefferson County, Kentucky (county FIPS code 21111).

What city is ZIP code 40242?

The primary USPS city for 40242 is Louisville, KY.

What metro area (MSA) is 40242 in?

40242 is part of the Louisville/Jefferson County, KY-IN Metro Area (MSA code 31140).

What is the population of ZIP code 40242?

The 2020 Census population of 40242 was 10,686 residents.

What is the median income in ZIP code 40242?

Based on IRS Statistics of Income data, the estimated median adjusted gross income per tax return in 40242 is about $55,824, with around 7% of filers reporting $200,000 or more. Note that adjusted gross income is a tax measure and differs from U.S. Census household income.