ZIP code
63123
Saint Louis, MO
63123 covers Saint Louis in St. Louis County, with 49,826 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 63123. Methodology
ZIP code map of 63123

About ZIP code 63123
Acceptable cities: Affton, Grantwood Village, Grantwood Vlg, Lakeshire, Mackenzie, Marlborough, Saint George
More enterprise fields
Commercial ZIP directory · not ACS
Commercial ZIP directory population_count for ZCTA 63123. Not ACS. Methodology
People in 63123
Race
- White43,219
- Black or African American1,568
- American Indian or Alaska Native118
- Asian2,467
- Native Hawaiian and Pacific Islander22
- Other race539
- Two or more races3,056
Hispanic or Latino (any race): 1,708
Age
- Under 105,625
- 10 to 195,202
- 20 to 296,267
- 30 to 397,828
- 40 to 495,760
- 50 to 596,586
- 60 to 697,100
- 70 to 793,876
- 80 and older2,745
Income and housing in 63123
Education
- High school graduate92.3%
- Bachelor's degree36.0%
- Graduate degree14.1%
Places covering 63123
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.
- Affton40.0%
- Concord10.7%
- Green Park5.3%
- St. Louis4.2%
- Crestwood3.8%
- Marlborough3.8%
- Lakeshire3.0%
- St. George3.0%
- Lemay2.3%
- Wilbur Park0.9%
- Mehlville0.0%
- Shrewsbury0.0%
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. Louis County95.8%
- St. Louis4.2%
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
21.1% of this ZIP is outside city limits (a real overlap row, not missing data).
Population history for 63123
Hover the chart or read the table below (Year | ACS | IRS).
| Year | ACS population | IRS population |
|---|---|---|
| 2005 | 47,743 | |
| 2006 | 46,400 | |
| 2007 | 48,408 | |
| 2008 | 46,507 | |
| 2009 | 46,302 | |
| 2010 | 46,651 | |
| 2011 | 48,538 | 46,884 |
| 2012 | 48,869 | 46,720 |
| 2013 | 49,390 | 47,010 |
| 2014 | 49,581 | 47,110 |
| 2015 | 49,924 | 47,110 |
| 2016 | 50,739 | 46,800 |
| 2017 | 50,790 | 46,880 |
| 2018 | 51,130 | 46,450 |
| 2019 | 50,783 | 46,050 |
| 2020 | 50,463 | 46,510 |
| 2021 | 49,886 | 45,280 |
| 2022 | 50,347 | 45,940 |
| 2023 | 49,826 |
ACS: U.S. Census Bureau American Community Survey 5-year estimates. IRS: Statistics of Income ZIP Code data.
ZIP codes near 63123
12 nearest ZIP centroids (any distance)
- 63125Saint Louis2.7 miPop 32,701 · Income $59,683
- 63126Saint Louis2.7 miPop 15,373 · Income $99,795
- 63109Saint Louis3.1 miPop 25,743 · Income $71,563
- 63119Saint Louis3.2 miPop 34,574 · Income $103,287
- 63116Saint Louis4.1 miPop 42,470 · Income $60,193
- 63111Saint Louis4.3 miPop 19,093 · Income $43,295
- 63143Saint Louis4.5 miPop 8,968 · Income $65,712
- 63139Saint Louis4.8 miPop 21,811 · Income $74,749
- 63127Saint Louis4.9 miPop 5,161 · Income $124,583
- 63128Saint Louis5.0 miPop 30,106 · Income $87,266
- 63144Saint Louis5.1 miPop 9,580 · Income $91,312
- 63122Saint Louis5.5 miPop 41,724 · Income $132,783
ZIP centroids within 2 miles
No other ZIP codes within 2 miles of 63123, measured by Census internal-point centroids. Try a wider radius.
ZIPs within 2 miles of this place
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ZIP code 63123 FAQ
- What city is ZIP code 63123 in?
- 63123 is in Saint Louis, MO.
- What county is 63123 in?
- 63123 is in St. Louis County.
- What is the median household income in 63123?
- The median household income in 63123 is $74,187.
- Which ZIP codes are near 63123?
- Use the radius tool on this page to list ZIP codes within a chosen distance of 63123.