Saint Louis, MO 63123 ZIP Code Profile

Related Place Profiles:
Affton, MO | Green Park, MO | Wilbur Park, MO

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ZIP Code 63123: Basic Data & USPS Preferred City Name

Preferred Name, USPS
Saint Louis, MO 63123

Acceptable Alternative
Affton, MO 63123

Not Acceptable, USPS
Green Park, MO 63123
Wilbur Park, MO 63123

  • ZIP Code Type: STANDARD
  • Businesses Addresses: 972
  • Single Family Addresses: 19,069
  • Multi-Family Addresses: 3,908
  • County: St. Louis County
  • Centroid: Latitude 38.544, Longitude -90.318
  • Time Zone: Central Time Zone (UTC -6 hours)
  • Observes DST: Yes

ZIP Code 63123 has segments in 2 Counties (Saint Louis, Saint Louis City).

Neighborhood Data

Address Based Hyperlocal Data Input an address and get data & demographics for the pertinent census block group (CBG), a searchable map and a customized directory. The CBG is the smallest geographical unit used by the Census Bureau for reporting certain data.


63123 ZIP Code Map

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Saint Louis, MO 63123 Data & Demographics (As of July 1, 2016)


Total Population 49,577
Population in Households 49,413
Population in Familes 37,556
Population in Group Qrtrs 164
Population Density1 3,971
Diversity Index2 21


Total Households 22,050
Average Household Size 2.24
Family Households 12,865
Average Family Size 3


Total Housing Units 23,445 (100%)
Owner Occupied HU 16,152 (68.9%)
Renter Occupied HU 5,898 (25.2%)
Vacant Housing Units 1,395 ( 6.0%)
Median Home Value $155,733
Average Home Value $170,586


Median Household Income $52,040
Average Household Income $64,946
Per Capita Income $28,954
  (Compound Annual Growth Rates)


2010-2015 2015-2020
Population 0.11% 0.11%
Households 0.08% 0.09%
Families -0.12% -0.04%
Median Household Income   1.97%
Per Capita Income   1.9%
1) Population Density = Total Population per square mile.
2) The Diversity Index is a scale of 0 to 100 that represents the likelyhood that two persons, chosen at random from the same area, belong to different race or ethnic groups. If an area's entire population belongs to one race AND one ethnic group, then the area has zero diversity. An area's diversity index increases to 100 when the population is evenly divided into two or more race/ethnic groups.
Based on Census 2010 counts, the Diversity Index for the United States was 60.6 and it is expected to increase to 64.8 by July 1, 2018.

Saint Louis, MO 63123 - Peer Comparisons by Rank and Percentile

The table below compares 63123 to the other 1,011 ZIP Codes in Missouri by rank and percentile using July 1, 2016 data. The location Ranked # 1 has the highest value. A location that ranks higher than 75% of its peers would be in the 75th percentile of the peer group.

Variable Description Rank Percentile
Total Population # 9 99th
Population Density1 # 31 97th
Diversity Index2 # 251 75th
Median Household Income # 222 78th
Per Capita Income # 127 88th

Additional comparisons and rankings can be made with a VERY EASY TO USE Missouri Census Data Comparison Tool.