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US ZIP Code Profile

ZIP Code 63124
Saint Louis, Missouri

ZIP code 63124 is in Saint Louis, located in Saint Louis County, Missouri, within the St. Louis metro area. Its 2020 Census population was 11,375. The estimated median adjusted gross income per tax return is $166,667, and about 44% of filers report $200,000 or more.

2020 Population
11,375
Census ZCTA
County
Saint Louis
FIPS 29189
Median income (est.)
$166,667
IRS SOI 2022
Land Area
8.758 mi²
+ 0.007 mi² water

01Location & Geography

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

Primary CitySaint Louis, MO
CountySaint Louis County (FIPS 29189)
StateMissouri (FIPS 29)
Metro Area (MSA)St. Louis, MO-IL Metro Area (41180)
Census Region / DivisionMidwest Region · West North Central Division
Coordinates38.63656, -90.37465
Land / Water Area8.758 mi² land · 0.007 mi² water

02Income & Economics

Distribution of the 5,400 individual tax returns filed in 63124 by adjusted gross income bracket (IRS SOI, 2022).

< $25K
16.5%
$25K–$50K
8.7%
$50K–$75K
7.6%
$75K–$100K
6.1%
$100K–$200K
16.7%
$200K+
44.4%
The $200,000+ bracket accounts for 93% of 63124's total adjusted gross income, from 44% of returns — a concentration that drives the gap between the median ($166,667) 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 63124's IRS income metrics, 2020–2022.

Median income (2021→2022)
$166,667
▲ 0.6%
Filers earning $200K+
44.4%
▲ 0.2 pt
Total filers
5,400
▲ 2.1%
GET /zipc/v2/zipcodes/63124/soi?year=… $143K 2020 $166K 2021 $167K 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 63124 ZCTA.

2000
9,819
 
2010
10,417
▲ +6.1%
2020
11,375
▲ +9.2%

05Nearby ZIP Codes — Live Radius Search

Drag the slider to filter ZIP codes by distance from 63124. Powered by the same radius endpoint developers call from the API.

GET /zipc/v2/radius

ZIP codes within range of 63124

Saint Louis and its immediate neighbors, sorted by distance.

3 mi
GET /zipc/v2/distance

Distance from 63124 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 Number287140
City AliasesClayton, Ladue, Saint Louis

07Frequently Asked Questions

What county is ZIP code 63124 in?

ZIP code 63124 is in Saint Louis County, Missouri (county FIPS code 29189).

What city is ZIP code 63124?

The primary USPS city for 63124 is Saint Louis, MO.

What metro area (MSA) is 63124 in?

63124 is part of the St. Louis, MO-IL Metro Area (MSA code 41180).

What is the population of ZIP code 63124?

The 2020 Census population of 63124 was 11,375 residents.

What is the median income in ZIP code 63124?

Based on IRS Statistics of Income data, the estimated median adjusted gross income per tax return in 63124 is about $166,667, with around 44% of filers reporting $200,000 or more. Note that adjusted gross income is a tax measure and differs from U.S. Census household income.