US > Missouri > Sainte Genevieve County > Saint Mary, MO 63673

63673 ZIP Code Profile, Map, Data & Demographics

Related Place Profiles:
Saint Mary, MO
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ZIP Code 63673: Basic Data & USPS Preferred City Name

Preferred Name, USPS
Saint Mary, MO 63673

Not Acceptable, USPS
Saint Marys, MO 63673

  • ZIP Code Type: STANDARD
  • County: Sainte Genevieve County
  • Centroid: Latitude 37.828, Longitude -90.04
  • Time Zone: Central Time Zone (UTC -6 hours)
  • Observes DST: Yes

ZIP Code 63673 has segments in 3 Counties (Perry, Randolph, Sainte Genevieve).

  • Businesses Addresses: 27
  • PO Box Addresses: 22
  • Residential Addresses: 863
    • Multi-Family Addresses: 0
    • Single Family Addresses: 863

The ZIP Code maps and database are updated 4 times per year.
Database updated: June 1, 2025, Maps updated: May 1, 2024.

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Saint Mary, MO 63673 Data & Demographics (As of July 1, 2025)

POPULATION

Total Population 2,192 (100%)
Population in Households 2,189 (99.9%)
Population in Families 1,761 (80.3%)
Population in Group Quarters1 3 ( 0.1%)
Population Density 20
Diversity Index2 15
 
 

INCOME

Median Household Income $80,765
Average Household Income $107,671
% of Income for Mortgage4 20%
Per Capita Income $40,431
Wealth Index5 101
Socioeconomic Status Index6 Moderate (46.8)
 

HOUSING

Total HU (Housing Units) 1,004 (100%)
Owner Occupied HU 722 (71.9%)
Renter Occupied HU 101 (10.1%)
Vacant Housing Units 181 (18.0%)
Median Home Value $254,545
Average Home Value $262,815
Housing Affordability Index3 118
 

HOUSEHOLDS

Total Households 823
Average Household Size 2.66
Family Households 587
Average Family Size 3.00
NOTES
  1. Group Quarters - a place where people live or stay in a group living arrangement. Includes college residents halls, nursing facilities, military barracks, and correctional facilities.
  2. The Diversity Index is a scale of 0 to 100 that represents the likelihood that two persons, chosen at random from the same area, belong to different races 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.
  3. The Housing Affordability Index base is 100 and represents a balance point where a resident with a median household income can normally qualify to purchase a median price home. Values above 100 indicate increased affordability, while values below 100 indicate decreased affordability.
  4. The % of Income for Mortgage quantifies the percentage of median household income dedicated to mortgage payments on a home priced at the median value (assuming a 30-year mortgage and a 20% down payment).
  5. The Wealth Index is based on a number of indicators of affluence including average household income and average net worth, but it also includes the value of material possessions and resources. It represents the wealth of the area relative to the national level. Values above or below 100 represent above-average wealth or below-average wealth compared to the national level.
  6. The Socioeconomic Index ranges from zero (lowest relative status) to 100 (highest relative status). This measure quantifies disparities in social position of an area's inhabitants and is built from a broad range of demographic, housing, and socioeconomic inputs. More information on this measure can be found in Esri's SEI tutorial.

GROWTH RATE / YEAR

 2020-2025 2025-2030
Population 0.32% 0.23%
Households 0.35% 0.07%
Families   -0.14%
Median Household Income   1.58%
Per Capita Income   1.51%
Owner Occupied HU   0.25%

Saint Mary, MO 63673 - Peer Comparisons by Rank and Percentile

The table below compares 63673 to the other 1,007 ZIP Codes in Missouri by rank and percentile using July 1, 2025 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 # 428 58th
Population Density # 618 39th
Median Household Income # 207 80th
Housing Affordability Index # 600 60th
Per Capita Income # 209 79th
Diversity Index # 791 22nd

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


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Sainte Genevieve County


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