ZIP code
63304
Saint Charles, MO
63304 covers Saint Charles in St. Charles County, with 43,389 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
U.S. Census Bureau, ACS 2019–2023 5-year (vintage 2023). Geography: ZCTA 63304. Methodology
ZIP code map of 63304

About ZIP code 63304
Acceptable cities: Cottleville, Saint Peters, Weldon Spring
More enterprise fields
Commercial ZIP directory · not ACS
Commercial ZIP directory population_count for ZCTA 63304. Not ACS. Methodology
People in 63304
Race
- White36,234
- Black or African American1,726
- American Indian or Alaska Native72
- Asian1,124
- Native Hawaiian and Pacific Islander16
- Other race419
- Two or more races2,437
Hispanic or Latino (any race): 1,314
Age
- Under 105,038
- 10 to 195,774
- 20 to 294,451
- 30 to 395,333
- 40 to 495,078
- 50 to 596,400
- 60 to 695,639
- 70 to 792,934
- 80 and older1,381
Income and housing in 63304
Education
- High school graduate96.2%
- Bachelor's degree48.0%
- Graduate degree18.2%
Places covering 63304
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.
- Weldon Spring12.7%
- St. Peters9.2%
- Cottleville6.9%
- O'Fallon4.0%
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.
- St. Charles County100.0%
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
67.0% of this ZIP is outside city limits (a real overlap row, not missing data).
Population history for 63304
Hover the chart or read the table below (Year | ACS | IRS).
| Year | ACS population | IRS population |
|---|---|---|
| 2005 | 42,611 | |
| 2006 | 39,999 | |
| 2007 | 41,308 | |
| 2008 | 40,272 | |
| 2009 | 40,436 | |
| 2010 | 40,592 | |
| 2011 | 40,341 | 40,776 |
| 2012 | 39,986 | 40,940 |
| 2013 | 40,094 | 41,060 |
| 2014 | 39,863 | 40,840 |
| 2015 | 40,601 | 40,790 |
| 2016 | 41,278 | 40,790 |
| 2017 | 40,937 | 40,660 |
| 2018 | 41,277 | 40,880 |
| 2019 | 41,223 | 40,990 |
| 2020 | 42,586 | 41,650 |
| 2021 | 42,342 | 40,660 |
| 2022 | 42,738 | 41,750 |
| 2023 | 43,389 |
ACS: U.S. Census Bureau American Community Survey 5-year estimates. IRS: Statistics of Income ZIP Code data.
ZIP codes near 63304
12 nearest ZIP centroids (any distance)
- 63368O Fallon3.9 miPop 45,862 · Income $118,811
- 63005Chesterfield4.7 miPop 19,679 · Income $202,232
- 63341Defiance7.2 miPop 3,554 · Income $177,583
- 63367Lake Saint Louis7.5 miPop 27,893 · Income $134,932
- 63376Saint Peters7.7 miPop 74,876 · Income $94,921
- 63303Saint Charles8.0 miPop 46,627 · Income $98,031
- 63017Chesterfield8.5 miPop 43,074 · Income $128,750
- 63038Wildwood9.0 miPop 7,132 · Income $187,906
- 63073Saint Albans9.5 miPop 1,027 · Income $250,000+
- 63040Wildwood9.6 miPop 8,826 · Income $130,139
- 63011Ballwin9.8 miPop 36,274 · Income $121,941
- 63365New Melle10.1 miPop 56 · Income $41,125
ZIP centroids within 2 miles
No other ZIP codes within 2 miles of 63304, measured by Census internal-point centroids. Try a wider radius.
ZIPs within 2 miles of this place
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ZIP code 63304 FAQ
- What city is ZIP code 63304 in?
- 63304 is in Saint Charles, MO.
- What county is 63304 in?
- 63304 is in St. Charles County.
- What is the median household income in 63304?
- The median household income in 63304 is $114,124.
- Which ZIP codes are near 63304?
- Use the radius tool on this page to list ZIP codes within a chosen distance of 63304.