ZIP Code 63303, Missouri
ZIP Code 63303 profile, demographic data, and geographic information.
ZCTA5 63303 is a 5-digit ZIP Code area located in St. Charles County, Missouri. As of official census estimates, it has a reported population of 46,089. The land area covers 19.75 sq mi. [1]
Demographics & Population
| Demographic Metric | Estimate / Count | Margin of Error | Survey Period / Source |
|---|---|---|---|
| Total Population | 46,089 | ±1,436 | 2020-2024 / Census ACS 5-Year 2024 |
| Median Age | 41.4 yrs | ±1.3 | 2020-2024 / Census ACS 5-Year 2024 |
| Total Households | 20,690 | ±678 | 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 | 21,538 | ±655 |
| Occupied Housing Units | 20,690 | ±678 |
| Vacant Housing Units | 848 | ±256 |
| Median Home Value | $321,100 | ±$9,307 |
| Median Gross Rent | $1,374 | ±$42 |
Source: U.S. Census Bureau ACS 5-Year (2020-2024).
Economy & Workforce
| Economic Metric | Estimate / Value | Margin of Error |
|---|---|---|
| Median Household Income | $99,138 | ±$5,566 |
| Per Capita Income | $58,928 | ±$6,621 |
| Poverty Rate | 5.3% | ±1% |
| Population Below Poverty Level | 2,440 | ±469 |
| Unemployment Rate | 2.1% | ±0.6% |
| Civilian Labor Force, Employed | 26,245 | ±1,107 |
| Broadband Internet Rate | 94.7% | ±1.3% |
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: 423,726 (2024)
ID: 194522
|
County | Official County Government |
Contact: COUNTY EXECUTIVE
100 N 3RD STREET, SUITE 318, SAINT CHARLES MO 63301
|
Education
Listing 10 local institutions (NCES 2024-2025)
External reference via K12Guides
| Institution | Type | Grades | Location |
|---|---|---|---|
| Regular School Nearby | KG-08 | FLORISSANT, MO | |
| Regular School Nearby | 09-12 | ST LOUIS, MO | |
| Regular School Nearby | PK-05 | HAZELWOOD, MO | |
| Regular School Nearby | KG-05 | ST LOUIS, MO | |
| Regular School Nearby | KG-05 | GLENCOE, MO | |
| Regular School Nearby | KG-05 | BALLWIN, MO | |
| Regular School Nearby | 01-08 | ST. LOUIS, MO | |
| Regular School Nearby | KG-05 | UNIVERSITY CITY, MO | |
| Regular School Nearby | PK | O'FALLON, MO | |
| Regular School Nearby | 06-08 | ST CHARLES, 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 |
|---|---|---|---|---|
|
The Salon Professional Academy-St Charles
|
College Vocational | 3.4 mi away | 3141 West Clay Street, St. Charles, MO, 63301-1021 |
6365419757
|
|
MCCLAY BRANCH
|
Library | 1.4 mi away | 2760 MCCLAY RD, ST. CHARLES, MO, 63303 |
(636) 441-7577
|
|
Lindenwood University
|
College | 3.9 mi away | 209 S Kingshighway St, Saint Charles, MO, 63301-1695 |
6369492000
|
|
KISKER ROAD BRANCH
|
Library | 4.1 mi away | 1000 KISKER RD, ST. CHARLES, MO, 63304 |
(636) 447-7323
|
|
Midwest Institute
|
College | 4.7 mi away | 4260 Shoreline Drive, Earth City, MO, 63045 |
3143444440
|
|
LIBRARY TO YOU BOOKMOBILE
|
Library | 4.3 mi away | 77 BOONE HILLS DR, ST. PETERS, MO, 63376 |
(636) 441-2300
|
|
St Charles Community College
|
College | 5.4 mi away | 4601 Mid Rivers Mall Dr, Cottleville, MO, 63376-0975 |
6369228000
|
|
SPENCER ROAD BRANCH
|
Library | 4.4 mi away | 427 SPENCER RD, ST. PETERS, MO, 63376 |
(636) 441-0522
|
|
Saint Louis Community College
|
College | 5.8 mi away | 3221 McKelvey Road, Bridgeton, MO, 63044 |
3145395005
|
|
KATHRYN LINNEMANN BRANCH
|
Library | 4.5 mi away | 2323 ELM ST, ST. CHARLES, MO, 63301 |
(636) 946-6294
|
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 PETERS 2 SE, MO US, located 3.1 miles from ZCTA5 63303. Local microclimates, topography, and elevation may cause municipal conditions to differ.
| Month | High (°F) | Low (°F) | Mean (°F) | Precip (in) | Snow (in) |
|---|---|---|---|---|---|
| January | 39.3° | 21.2° | 30.2° | 2.44" | 4.7" |
| February | 44.9° | 24.8° | 34.8° | 2.37" | 5.0" |
| March | 55.5° | 33.3° | 44.4° | 3.46" | 1.5" |
| April | 67.3° | 43.3° | 55.3° | 4.74" | 0.1" |
| May | 76.3° | 53.5° | 64.9° | 4.80" | 0.0" |
| June | 84.4° | 63.3° | 73.9° | 4.26" | 0.0" |
| July | 88.1° | 67.5° | 77.8° | 4.23" | 0.0" |
| August | 87.2° | 65.4° | 76.3° | 3.76" | 0.0" |
| September | 80.8° | 57.1° | 68.9° | 3.07" | 0.0" |
| October | 68.5° | 45.2° | 56.9° | 3.11" | 0.0" |
| November | 54.9° | 35.0° | 44.9° | 3.54" | 0.8" |
| December | 43.6° | 26.5° | 35.0° | 2.56" | 2.7" |
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 |
|---|---|---|---|
| Maryland Heights city | City | 4.2 mi | — |
| St. Charles city | City | 4.2 mi | — |
| St. Peters city | City | 4.4 mi | — |
| Champ village | Village | 4.9 mi | — |
| Chesterfield city | City | 5.9 mi | — |
| Cottleville city | City | 6.2 mi | — |
Sources & Data Provenance
- Geographic Classification & Identifiers: U.S. Census Bureau Gazetteer (2026) and TIGER/Line Shapefiles. GEOID: 63303. • 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.