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ZIP code

63121

Saint Louis, MO

STANDARD

63121 covers Saint Louis in St. Louis County, with 24,571 people in the ACS 2023 estimate.

Figures are for the Census ZIP Code Tabulation Area (ZCTA), which is not the same as a USPS ZIP code. A PO Box or unique ZIP may have no ZCTA and no demographics. Methodology

ACS 2023 population

24,571

Median household income

$41,285

Median home value

$93,900

U.S. Census Bureau, ACS 2019–2023 5-year (vintage 2023). Geography: ZCTA 63121. Methodology

ZIP code map of 63121

Census ZCTA boundary for ZIP 63121 in Saint Louis, Missouri
Census ZCTA boundary for ZIP 63121 in Saint Louis, Missouri. A ZCTA is not the same as a USPS ZIP code. Boundaries: U.S. Census Bureau. Methodology · Data sources
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About ZIP code 63121

Type

STANDARD

City

Saint Louis

County

St. Louis County

Timezone

America/Chicago

Area codes

314, 557

Land area

6.8 sq mi

Water area

0.00 sq mi

Households

12,745

Median gross rent

$938

Acceptable cities: Cool Valley, Glen Echo Pk, Hillsdale, Normandy, Norwood Court, Uplands Park, Velda City

More enterprise fields

Timezone
America/Chicago
Area Codes
314, 557
World Region
NA
Country
US

Commercial ZIP directory · not ACS

Commercial ZIP directory population_count for ZCTA 63121. Not ACS. Methodology

People in 63121

Race

  • White2,807
  • Black or African American18,493
  • American Indian or Alaska Native64
  • Asian362
  • Native Hawaiian and Pacific Islander6
  • Other race310
  • Two or more races867

Hispanic or Latino (any race): 516

Age

  • Under 102,779
  • 10 to 192,826
  • 20 to 293,363
  • 30 to 392,518
  • 40 to 492,372
  • 50 to 592,965
  • 60 to 693,215
  • 70 to 791,898
  • 80 and older973

Income and housing in 63121

Poverty rate

23.6%

Median earnings

$31,613

Median household income

$41,285

Median home value

$93,900

Median gross rent

$938

Education

  • High school graduate91.3%
  • Bachelor's degree21.9%
  • Graduate degree8.7%

Places covering 63121

Cities and places — Population overlap

Share of this ZIP/ZCTA’s population located within each place, based on ZIP Code Database place-overlap data. This is a population measure, not land-area overlap or the Census-place population.

ZIP Code Database place-overlap table, field percent_of_zip_population_in_place, keyed by place_geoid. Not ACS 2019–2023. Overlap vintage is the shipped overlap table and is separate from ACS. Methodology

Counties — Population overlap

Share of this ZIP/ZCTA’s population located within each county, based on ZIP Code Database county-overlap data. This is a population measure, not land-area overlap or the Census county population.

ZIP Code Database county-overlap table, field percent_of_zip_population_in_county, keyed by county_geoid. Not ACS 2019–2023. Overlap vintage is the shipped overlap table and is separate from ACS. Methodology

8.5% of this ZIP is outside city limits (a real overlap row, not missing data).

Population history for 63121

IRS populationACS population
28,92014,460020052023

Hover the chart or read the table below (Year | ACS | IRS).

Population history. Year | ACS population | IRS population. ACS and IRS are separate series. Blank cells mean that source did not publish a count for the year.
YearACS populationIRS population
200524,256
200623,718
200725,267
200822,867
200922,740
201022,446
201126,77821,996
201226,73621,650
201326,31621,130
201426,27820,940
201525,63920,060
201625,27619,390
201724,71319,100
201824,63418,350
201923,56118,560
202025,37418,870
202123,76017,490
202224,12617,250
202324,571

ACS: U.S. Census Bureau American Community Survey 5-year estimates. IRS: Statistics of Income ZIP Code data.

ZIP codes near 63121

12 nearest ZIP centroids (any distance)

  1. 63133Saint Louis1.8 miPop 6,375 · Income $36,927
  2. 63120Saint Louis2.4 miPop 7,227 · Income $34,097
  3. 63140Saint Louis2.5 miPop 350 · Income $43,438
  4. 63135Saint Louis3.0 miPop 19,446 · Income $55,179
  5. 63130Saint Louis3.3 miPop 29,074 · Income $81,103
  6. 63134Saint Louis3.3 miPop 13,460 · Income $42,222
  7. 63136Saint Louis3.4 miPop 41,314 · Income $40,388
  8. 63114Saint Louis3.4 miPop 33,703 · Income $52,048
  9. 63112Saint Louis3.5 miPop 18,353 · Income $43,262
  10. 63115Saint Louis3.7 miPop 14,252 · Income $31,898
  11. 63113Saint Louis4.5 miPop 11,610 · Income $38,647
  12. 63105Saint Louis4.6 miPop 18,860 · Income $119,446

ZIP centroids within 2 miles

ZIP centroids within 2 miles of 63121, measured by Census internal point.
ZIPCityStateDistance (miles)ACS populationMedian income
63133Saint LouisMO1.8 mi6,375$36,927

ZIPs within 2 miles of this place

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63121 Saint Louis, MO

Looking up ZIP codes within 2 miles of 63121 Saint Louis, MO, measured by centroid distance.

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ZIP code 63121 FAQ

What city is ZIP code 63121 in?
63121 is in Saint Louis, MO.
What county is 63121 in?
63121 is in St. Louis County.
What is the median household income in 63121?
The median household income in 63121 is $41,285.
Which ZIP codes are near 63121?
Use the radius tool on this page to list ZIP codes within a chosen distance of 63121.