ZIP Code Tabulation Area · Missouri

ZIP Code 63021: St. Louis County, MO

ZIP Code 63021 (St. Louis County, Missouri) has an estimated 55,666 residents in 22,131 households. The median household income is $120,177, the median home value is $349,500 and the median gross rent is $1,423/mo. Figures are U.S. Census Bureau American Community Survey 2020–2024 5-year estimates for the matching ZIP Code Tabulation Area.

American Community Survey 2020–2024 5-year estimates · Updated

Total population

55,666

Margin of error ±1,333

Median household income

$120,177

Margin of error ±$5,461

Median home value

$349,500

Margin of error ±$8,456

Median gross rent

$1,423/mo

Margin of error ±$53

Median age

40.7 yrs

Margin of error ±1.3 yrs

Mean travel time to work

23.9 min

Margin of error ±1.8 min

How ZIP 63021 compares with Missouri and the U.S.

State and national figures are the Census Bureau's own estimates for those areas from the same ACS release, not averages of ZIP codes.

Median age

ZIP 6302140.7 yrsMissouri39.0 yrsUnited States38.9 yrs

Median household income

ZIP 63021$120,177Missouri$70,702United States$80,734

Per capita income

ZIP 63021$56,249Missouri$39,695United States$44,673

Poverty rate

ZIP 630215.4%Missouri12.6%United States12.5%

Unemployment rate

ZIP 630214.1%Missouri4.0%United States5.2%

Bachelor's degree or higher

ZIP 6302163.0%Missouri32.4%United States35.7%

Median home value

ZIP 63021$349,500Missouri$230,300United States$332,700

Median gross rent

ZIP 63021$1,423/moMissouri$1,033/moUnited States$1,413/mo

Owner-occupied homes

ZIP 6302180.7%Missouri68.1%United States65.2%

Mean travel time to work

ZIP 6302123.9 minMissouri23.5 minUnited States26.4 min

Worked from home

ZIP 6302120.6%Missouri13.0%United States15.1%

All figures for ZIP 63021

Each estimate has a 90% margin of error: the true value is likely within that range. * marks estimates with a large margin of error (a coefficient of variation above 30%, or ±10 percentage points or more for rates).

ZIP 63021 — ACS 2020–2024 5-year estimates
MeasureZIP 63021Margin of errorMissouriUnited States
Total population55,666±1,3336,191,814334,922,499
Median age40.7 yrs±1.3 yrs39.0 yrs38.9 yrs
Households22,131±6162,508,227129,227,496
Median household income$120,177±$5,461$70,702$80,734
Per capita income$56,249±$2,369$39,695$44,673
Poverty rate5.4%±1.5 pts12.6%12.5%
Unemployment rate4.1%±1.4 pts4.0%5.2%
Bachelor's degree or higher63.0%±2.7 pts32.4%35.7%
Median home value$349,500±$8,456$230,300$332,700
Median gross rent$1,423/mo±$53$1,033/mo$1,413/mo
Owner-occupied homes80.7%±2.2 pts68.1%65.2%
Mean travel time to work23.9 min±1.8 min23.5 min26.4 min
Worked from home20.6%±2.4 pts13.0%15.1%

Race and Hispanic or Latino origin

Shares of the total population by the Census Bureau's race and Hispanic or Latino origin categories (table B03002), listed in the Census Bureau's order. People self-identify on the survey.

Population by race and Hispanic or Latino origin, ZIP 63021
GroupZIP 63021MissouriUnited States
White alone, not Hispanic or Latino75.3%76.3%57.4%
Black or African American alone, not Hispanic or Latino2.5%10.9%11.9%
American Indian and Alaska Native alone, not Hispanic or Latino0.0%0.2%0.5%
Asian alone, not Hispanic or Latino10.3%2.1%5.9%
Native Hawaiian and Other Pacific Islander alone, not Hispanic or Latino0.0%0.1%0.2%
Some other race alone, not Hispanic or Latino0.3%0.4%0.6%
Two or more races, not Hispanic or Latino6.0%4.8%4.3%
Hispanic or Latino (of any race)5.6%5.2%19.3%

Where ZIP 63021 is

State
Missouri
Main county
St. Louis County
Largest overlapping place
Ballwin (17% of the ZIP's land area)
Land area
21.82 sq mi· about 2,551 people per sq mi

County and place names come from the Census Bureau's 2020 ZCTA relationship files. A ZIP code's mailing city, set by the U.S. Postal Service, can differ from these names.

Other ZIP codes in St. Louis County

63005 Wildwood, MO63011 Ballwin, MO63017 Chesterfield, MO63025 Eureka, MO63031 Florissant, MO63033 Florissant, MO63034 Old Jamestown, MO63038 Wildwood, MO63040 Wildwood, MO63042 Hazelwood, MO63043 Maryland Heights, MO63044 Bridgeton, MO63074 St. Ann, MO63088 Valley Park, MO63105 Clayton, MO63114 Overland, MO63117 Richmond Heights, MO63119 Webster Groves, MO63121 Normandy, MO63122 Kirkwood, MO63123 Affton, MO63124 Ladue, MO63125 Lemay, MO63126 Crestwood, MO

See every ZIP code in Missouri, or compare ZIP 63021 with another ZIP code.

Census figures describe residents as a group and cannot tell you about any one home or street. For a specific address, check local government and housing records.

About ZIP codes and ZCTAs: the Census Bureau publishes statistics for ZIP Code Tabulation Areas, which approximate USPS ZIP code delivery areas. Learn how they differ.

Sources

  • U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, detailed tables B01003, B01002, B11001, B19013, B19301, B17001, B23025, B15003, B25077, B25064, B25003, B08013, B08303, B08301, B03002 — snapshot Oct 26, 2026.
  • U.S. Census Bureau, 2020 ZCTA5 relationship files (county and place).
  • Data: U.S. Census Bureau, American Community Survey 5-year estimates (detailed tables) and 2020 Census ZCTA relationship files. This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau. These agencies do not endorse OpenZIP.