ZIP Code 63121, Missouri
ZIP Code 63121 profile, demographic data, and geographic information.
ZCTA5 63121 is a 5-digit ZIP Code area located in St. Louis County, Missouri. As of official census estimates, it has a reported population of 25,008. The land area covers 6.77 sq mi. [1]
Demographics & Population
| Demographic Metric | Estimate / Count | Margin of Error | Survey Period / Source |
|---|---|---|---|
| Total Population | 25,008 | ±1,356 | 2020-2024 / Census ACS 5-Year 2024 |
| Median Age | 33.2 yrs | ±2.1 | 2020-2024 / Census ACS 5-Year 2024 |
| Total Households | 11,142 | ±773 | 2020-2024 / Census ACS 5-Year 2024 |
Source: U.S. Census Bureau (PEP, ACS 5-Year).
Housing & Real Estate Profile
| Housing Metric | Estimate / Value | Margin of Error |
|---|---|---|
| Total Housing Units | 13,008 | ±783 |
| Occupied Housing Units | 11,142 | ±773 |
| Vacant Housing Units | 1,866 | ±314 |
| Median Home Value | $95,600 | ±$5,913 |
| Median Gross Rent | $985 | ±$72 |
Source: U.S. Census Bureau ACS 5-Year (2020-2024).
Economy & Workforce
| Economic Metric | Estimate / Value | Margin of Error |
|---|---|---|
| Median Household Income | $42,701 | ±$2,983 |
| Per Capita Income | $27,628 | ±$1,788 |
| Poverty Rate | 25.6% | ±4.4% |
| Population Below Poverty Level | 6,143 | ±1,122 |
| Unemployment Rate | 12.3% | ±2.8% |
| Civilian Labor Force, Employed | 10,928 | ±994 |
| Broadband Internet Rate | 85.5% | ±3.1% |
Source: U.S. Census Bureau ACS 5-Year (2020-2024).
Local Government & Public Administration
Authoritative general-purpose local government units serving this area
U.S. Census Bureau GUS (2026) / GMAF
| Government Unit | Unit Type | Jurisdiction Role | Contact / Address |
|---|---|---|---|
|
GUS Population: 992,929 (2024)
ID: 168767
|
County | Official County Government |
Contact: COUNTY EXECUTIVE
41 S CENTRAL AVE, FL 9, CLAYTON MO 63105-1759
|
Education
Listing 10 local institutions (NCES 2024-2025)
External reference via K12Guides
| Institution | Type | Grades | Location |
|---|---|---|---|
| Regular School Nearby | 06-08 | ST. LOUIS, MO | |
| Alternative School Nearby | 06-12 | Cahokia, IL | |
| Regular School Nearby | KG-08 | FLORISSANT, MO | |
| Regular School Nearby | PK-06 | ST LOUIS, MO | |
| Regular School Nearby | 09-12 | ST LOUIS, MO | |
| Regular School Nearby | PK-05 | ST LOUIS, MO | |
| Regular School Nearby | PK-05 | HAZELWOOD, MO | |
| Regular School Nearby | PK-05 | ST LOUIS, MO | |
| Regular School Nearby | PK-06 | ST LOUIS, MO | |
| Regular School Nearby | PK-02 | ST. LOUIS, MO |
Source: k12guides.com.
Community Facilities & Infrastructure
Displaying 10 civic institutions across 2 datasets queried
CMS • IPEDS • IMLS
| Facility Name | Category | Relationship | Address / Location | Contact |
|---|---|---|---|---|
|
University of Missouri-St Louis
|
College | 0.6 mi away | One University Boulevard, Saint Louis, MO, 63121-4400 |
3145165000
|
|
NATURAL BRIDGE BRANCH
|
Library | 0.2 mi away | 7606 NATURAL BRIDGE RD., ST. LOUIS, MO, 63121 |
(314) 994-3300
|
|
Washington University in St Louis
|
College | 4.2 mi away | 1 Brookings Drive, St. Louis, MO, 63130 |
3149355000
|
|
PARKVIEW BRANCH
|
Library | 2.3 mi away | 8400 DELPORT DR, ST. LOUIS, MO, 63114 |
(314) 994-3300
|
|
American Trade School
|
College | 4.5 mi away | 3925 Industrial Drive, Saint Ann, MO, 63074-1807 |
3144231900
|
|
FERGUSON MUNICIPAL PUBLIC LIBRARY DISTRICT
|
Library | 2.6 mi away | 35 N FLORISSANT RD, FERGUSON, MO, 63135 |
(314) 521-4820
|
|
Fontbonne University
|
College | 4.6 mi away | 6800 Wydown Blvd, Saint Louis, MO, 63105-3098 |
3148623456
|
|
WALNUT PARK BRANCH
|
Library | 2.9 mi away | 5760 W FLORISSANT AVE, ST. LOUIS, MO, 63120 |
(314) 383-1210
|
|
Ranken Technical College
|
College | 4.7 mi away | 4431 Finney Ave, Saint Louis, MO, 63113-2811 |
3143710236
|
|
UNIVERSITY CITY PUBLIC LIBRARY
|
Library | 3.6 mi away | 6701 DELMAR BLVD, UNIVERSITY CITY, MO, 63130 |
(314) 727-3150
|
Distances calculated from authoritative source coordinates. Source: CMS, IMLS, NCES IPEDS.
Climate & Weather Observations
NOAA Monthly Climate Normals
Observation Station: Climate data reflects NOAA 1991–2020 standard normals recorded at ST LOUIS LAMBERT INTL AP, MO US, located 5.0 miles from ZCTA5 63121. Local microclimates, topography, and elevation may cause municipal conditions to differ.
| Month | High (°F) | Low (°F) | Mean (°F) | Precip (in) | Snow (in) |
|---|---|---|---|---|---|
| January | 40.4° | 23.8° | 32.1° | 2.59" | 5.7" |
| February | 45.8° | 27.6° | 36.7° | 2.23" | 4.3" |
| March | 56.6° | 36.7° | 46.6° | 3.50" | 2.3" |
| April | 68.0° | 47.0° | 57.5° | 4.73" | 0.2" |
| May | 77.1° | 57.9° | 67.5° | 4.82" | 0.0" |
| June | 85.9° | 67.2° | 76.5° | 4.49" | 0.0" |
| July | 89.6° | 71.1° | 80.4° | 3.93" | 0.0" |
| August | 88.3° | 69.3° | 78.8° | 3.38" | 0.0" |
| September | 81.1° | 60.9° | 71.0° | 2.96" | 0.0" |
| October | 69.2° | 49.1° | 59.1° | 3.15" | 0.0" |
| November | 55.5° | 37.4° | 46.5° | 3.42" | 0.9" |
| December | 44.5° | 28.5° | 36.5° | 2.50" | 3.2" |
Source: NOAA U.S. Climate Normals (1991–2020).
Local Weather Forecast
Weather forecast data is currently unavailable in the local cache.
Nearby Cities & Communities
Listing adjacent communities by spatial proximity (miles)
Proximity discovery
| Community Name | Classification | Distance | Population |
|---|---|---|---|
| Normandy city | City | 0.1 mi | — |
| Pasadena Park village | Village | 0.3 mi | — |
| Pasadena Hills city | City | 0.5 mi | — |
| Bellerive Acres city | City | 0.7 mi | — |
| Norwood Court town | Town | 0.7 mi | — |
| Beverly Hills city | City | 0.9 mi | — |
Sources & Data Provenance
- Geographic Classification & Identifiers: U.S. Census Bureau Gazetteer (2026) and TIGER/Line Shapefiles. GEOID: 63121. • Official Source Dataset →
- Socioeconomic & Housing Metrics: U.S. Census Bureau American Community Survey (ACS) 5-year estimates and Population Estimates Program (PEP). Margin of Error (MOE) intervals are reported where published; suppressed values are never estimated or replaced with false zeros.
- Civic Directory Datasets: Centers for Medicare & Medicaid Services (CMS Hospital Directory), National Center for Education Statistics (NCES IPEDS Postsecondary Directory), and Institute of Museum and Library Services (IMLS Public Libraries Survey). Airport landing facilities are provided by airport-data.com.
- Weather & Climate Observations: National Oceanic and Atmospheric Administration (NOAA) U.S. Climate Normals 1991–2020 and National Weather Service (NWS) point forecasts.