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US ZIP Code Profile

ZIP Code 40218
Louisville, Kentucky

ZIP code 40218 is in Louisville, located in Jefferson County, Kentucky, within the Louisville/Jefferson County metro area. Its 2020 Census population was 33,437. The estimated median adjusted gross income per tax return is $36,908, and about 1% of filers report $200,000 or more.

2020 Population
33,437
Census ZCTA
County
Jefferson
FIPS 21111
Median income (est.)
$36,908
IRS SOI 2022
Land Area
9.732 mi²
+ 0.051 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
Coordinates38.18945, -85.65426
Land / Water Area9.732 mi² land · 0.051 mi² water

02Income & Economics

Distribution of the 14,530 individual tax returns filed in 40218 by adjusted gross income bracket (IRS SOI, 2022).

< $25K
34.1%
$25K–$50K
33.5%
$50K–$75K
16.1%
$75K–$100K
7.9%
$100K–$200K
7.6%
$200K+
0.9%
The $200,000+ bracket accounts for 7% of 40218's total adjusted gross income, from 1% of returns — a concentration that drives the gap between the median ($36,908) 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 40218's IRS income metrics, 2020–2022.

Median income (2021→2022)
$36,908
▲ 5.6%
Filers earning $200K+
0.9%
▲ 0.1 pt
Total filers
14,530
▼ 1.6%
GET /zipc/v2/zipcodes/40218/soi?year=… $33K 2020 $35K 2021 $37K 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 40218 ZCTA.

2000
29,094
 
2010
31,658
▲ +8.8%
2020
33,437
▲ +5.6%

05Nearby ZIP Codes — Live Radius Search

Drag the slider to filter ZIP codes by distance from 40218. Powered by the same radius endpoint developers call from the API.

GET /zipc/v2/radius

ZIP codes within range of 40218

Louisville and its immediate neighbors, sorted by distance.

3 mi
GET /zipc/v2/distance

Distance from 40218 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, West Buechel, Watterson Park, Watterson Pk, Buechel

07Frequently Asked Questions

What county is ZIP code 40218 in?

ZIP code 40218 is in Jefferson County, Kentucky (county FIPS code 21111).

What city is ZIP code 40218?

The primary USPS city for 40218 is Louisville, KY.

What metro area (MSA) is 40218 in?

40218 is part of the Louisville/Jefferson County, KY-IN Metro Area (MSA code 31140).

What is the population of ZIP code 40218?

The 2020 Census population of 40218 was 33,437 residents.

What is the median income in ZIP code 40218?

Based on IRS Statistics of Income data, the estimated median adjusted gross income per tax return in 40218 is about $36,908, with around 1% of filers reporting $200,000 or more. Note that adjusted gross income is a tax measure and differs from U.S. Census household income.