West Alton, MO Profile: Facts & Data


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West Alton, Missouri - Basic Facts

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The City of West Alton had a population of 382 as of July 1, 2022. West Alton ranks in the lower quartile for Population Density when compared to the other cities, towns and Census Designated Places (CDPs) in Missouri. See peer rankings below.

The primary coordinate point for West Alton is located at latitude 38.865 and longitude -90.2226 in St. Charles County. The formal boundaries for the City of West Alton encompass a land area of 28.81 sq. miles and a water area of 8.25 sq. miles. St. Charles County is in the Central time zone (GMT -6). The elevation is 443 feet.

The City of West Alton has a C1 Census Class Code which indicates an active incorporated place that does not serve as a county subdivision equivalent. It also has a Functional Status Code of "A" which identifies an active government providing primary general-purpose functions.

The City of West Alton is located within Township of Rivers, a minor civil division (MCD) of St. Charles County.

Alternate Unofficial Names for West Alton: Westalton.

Jump to... (On This Page!)
  1. West Alton 2022 Demographic Data
  2. Growth Rates for West Alton (Historical & 5-Year Forecast)
  3. Peer Comparisons (Rank and Percentile)
  1. Neighborhoods Demographics (Home Values, Household Income, etc.)
  2. Missouri Research Tools (Easy Tools & Current Data)
  3. Missouri Data Comparison Tool - 2022 Demographics

West Alton, MO Data & Demographics (As of July 1, 2022)


Total Population 382 (100%)
Population in Households 382 (100.0%)
Population in Families 308 (80.6%)
Population in Group Quarters1 0
Population Density 13
Diversity Index2 16


Median Household Income $56,945
Average Household Income $96,572
% of Income for Mortgage4 17%
Per Capita Income $40,293
Wealth Index5 85


Total HU (Housing Units) 200 (100%)
Owner Occupied HU 123 (61.5%)
Renter Occupied HU 37 (18.5%)
Vacant Housing Units 40 (20.0%)
Median Home Value $186,905
Average Home Value $176,220
Housing Affordability Index3 148


Total Households 160
Average Household Size 2.39
Family Households 111
Average Family Size 3.00
  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.


2020-2022 2022-2027
Population 2.80% 0.42%
Households 0.56% 0.37%
Families   0.36%
Median Household Income   2.79%
Per Capita Income   4.07%
Owner Occupied HU   0.48%

West Alton, MO - Peer Comparisons by Rank and Percentile

The table below compares West Alton to the other 1,082 incorporated cities, towns and CDPs in Missouri by rank and percentile using July 1, 2022 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 # 565 48th
Population Density # 1073 1st
Median Household Income # 472 56th
Housing Affordability Index # 430 40th
Per Capita Income # 142 87th
Diversity Index # 718 33rd

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

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