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ZIP CODE TABULATION AREA

63121

Missouri · 25,008 residents · 6.771 sq mi
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ZIP 63121 has notably lower household income than the US average, with a median household income of $42,701. Population has held roughly steady since 2024. Median home value is $95,600. At a median age of 33.2, residents skew younger than the country as a whole. The poverty rate of 25.6% is well above the national figure. Households here earn about 49% less than the St. Louis County median. Among the 42 ZIP codes in St. Louis County, 63121 ranks 40th by median household income.

$42,701
US average: $82,259
$95,600
US average: $376,019
24.2%
US average: 35.6%
Age, sex & households
Under 18
21.4%
Age 65+
16.9%
44.0%
56.0%
2.15 people
Race & ethnicity · 2024
2024
White, non-Hispanic13.9%(3,475)
Black78.6%(19,651)
Hispanic / Latino2.5%(622)
Asian2%(502)
Other3%(758)
Diversity Score45.2%(11,294)
Housing
Commute & vehicles
Work & employment
People & community
Affordability & inequality
Within St. Louis County
Income rank vs other ZIPs
LOWEST40TH OF 42HIGHEST
Adjacent ZIPs
63005$198,469
63011$124,454
63017$127,095
63021$120,177
Frequently asked

How many people live in ZIP code 63121?

ZIP code 63121 has about 25,008 residents according to the 2024 American Community Survey.

What is the median household income in ZIP code 63121?

The typical household in ZIP code 63121 earns about $42,701 a year. Half of households make more than that, and half make less.

Is ZIP code 63121 expensive?

In ZIP code 63121, the median home is worth about $95,600, and the typical rent is about $985 a month.

How educated are people in ZIP code 63121?

About 24.2% of adults age 25 and over in ZIP code 63121 hold a bachelor's degree or higher.

What is the poverty rate in ZIP code 63121?

About 25.6% of people in ZIP code 63121 live below the federal poverty line.

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DATA: US CENSUS BUREAU ACS 5-YEAR · ZCTA · UPDATED 2024