Census ACS · Missouri
ZIP Code 63123
ZIP code 63123 is located in Missouri with a population of 49,826. The median household income is $74,187 and the median home value is $205,300.
49,826
Population
$74,187
Median Income
$205,300
Median Home Value
41.0
Median Age
Race & Ethnicity
| White | 83.5% |
| Black | 3.6% |
| Asian | 0.0% |
| Hispanic (any race) | 1.4% |
Male: 48.1% · Female: 51.9%
Economy & Income
$74,187
Median Household Income
$41,397
Per Capita Income
4.8%
Poverty Rate
Housing
$205,300
Median Home Value
$987
Median Rent
74.0%
Homeownership
Education
92.3%
High School+
36.0%
Bachelor's Degree+
Nearby ZIP Codes
Largest cities in Missouri
Part of Missouri
Metro areas in Missouri
Frequently Asked Questions
ZIP code 63123 in Missouri has a population of 49,826 according to latest Census ACS data.
The median household income in ZIP 63123 is $74,187. The per capita income is $41,397. The poverty rate is 4.8%.
ZIP code 63123 is located in Missouri.
More from Missouri
Data for ZIP Code Tabulation Area (ZCTA) 63123 from the American Community Survey 5-Year estimates. ZCTAs approximately correspond to USPS ZIP code delivery areas but are built from Census blocks and may not match exactly.
What distinguishes ZIP 63123 is density: among the most densely settled of US ZIP codes, around 4,001 people per square mile. ZIP 63123 is a ZIP code in Missouri with a population of 49,826.
Median household income is $74,187, below the US median of $78,538. The poverty rate is 4.8%, below the national 12.4%. The typical home is valued at $205,300, with typical rent around $987.
Educational attainment is on the higher side for US ZIP codes — 36.0% of adults hold a four-year degree, near the national 35.0%.
That density explains much of the rest of the profile in ZIP 63123: denser places lean toward renting, shorter commutes by transit, and a younger working-age mix.
Source: U.S. Census Bureau ACS, 2026.