O Fallon, MO 63366 ZIP Code Profile


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ZIP Code 63366: Basic Data & USPS Preferred City Name

Preferred Name, USPS
O Fallon, MO 63366

Acceptable Alternative
Cottleville, MO 63366
Dardenne Pr, MO 63366
Dardenne Prairie, MO 63366
Saint Paul, MO 63366
Saint Peters, MO 63366

Not Acceptable, USPS
Dardenne, MO 63366
Ofallon, MO 63366
St Peters, MO 63366

  • ZIP Code Type: STANDARD
  • Businesses Addresses: 1,385
  • Single Family Addresses: 18,110
  • Multi-Family Addresses: 1,141
  • County: St. Charles County
  • Centroid: Latitude 38.835, Longitude -90.742
  • Time Zone: Central Time Zone (UTC -6 hours)
  • Observes DST: Yes

Neighborhood Data

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63366 ZIP Code Map

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O Fallon, MO 63366 Data & Demographics (As of July 1, 2016)


Total Population 50,903
Population in Households 50,784
Population in Familes 43,408
Population in Group Qrtrs 119
Population Density1 676
Diversity Index2 24


Total Households 18,857
Average Household Size 2.69
Family Households 13,852
Average Family Size 3


Total Housing Units 19,665 (100%)
Owner Occupied HU 15,136 (77.0%)
Renter Occupied HU 3,721 (18.9%)
Vacant Housing Units 808 ( 4.1%)
Median Home Value $195,803
Average Home Value $217,145


Median Household Income $66,861
Average Household Income $80,917
Per Capita Income $30,024
  (Compound Annual Growth Rates)


2010-2015 2015-2020
Population 1.26% 1.32%
Households 1.4% 1.41%
Families 1.27% 1.32%
Median Household Income   2.41%
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.

O Fallon, MO 63366 - Peer Comparisons by Rank and Percentile

The table below compares 63366 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 # 6 100th
Population Density1 # 148 85th
Diversity Index2 # 209 80th
Median Household Income # 65 94th
Per Capita Income # 105 90th

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

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