West Alton, MO Profile: Facts, Map & Data


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West Alton, Missouri - Basic Facts

The City of West Alton had a population of 554 as of July 1, 2017. West Alton ranks in the lower quartile for Population Density and Diversity Index 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 38.8629 and longitude -90.2039 in St. Charles County. The formal boundaries for the City of West Alton (see map below) 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 440 feet.

The City of West Alton (GNIS ID: 2397259) 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.

Beneath the boundary map are tables with West Alton population, income and housing data, five-year growth projections and peer comparisons for key demographic data. The estimates are for July 1, 2017.

Alternate Unofficial Names for West Alton: Westalton.

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City of West Alton, MO Boundary Map

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Boundary Maps: Township of Rivers | St. Charles County | Missouri Counties

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West Alton, MO Data & Demographics (As of July 1, 2017)


Total Population 554
Daytime Population: Workers 133
Daytime Population: Residents 372
Total Daytime Population (TDP) 505
Ratio TDP/Total Population1 0.91
Population in Households 554
Population in Familes 450
Population in Group Qrtrs 0
Population Density2 19
Diversity Index3 7


Median Household Income $47,512
Average Household Income $57,255
Per Capita Income $22,454


Total Housing Units 285 (100%)
Owner Occupied HU 182 (63.9%)
Renter Occupied HU 36 (12.6%)
Vacant Housing Units 68 (23.9%)
Median Home Value $122,674
Average Home Value $151,657


Total Households 217
Average Household Size 2.55
Family Households 152
Average Family Size 3
  1. If the ratio of the TDP to Total Population is greater than 1, the location gains population during the day when commuting workers are present. If the ratio is less than 1, the location is more of a bedroom community where people commute to another place for work.
  2. Population Density = Total Population per square mile.
  3. 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 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.


2010-2017 2017-2022
Population 0.82% 1.13%
Households 0.92% 1.17%
Families 0.75% 1.03%
Median Household Income   3.07%
Per Capita Income   3.47%

West Alton, MO - Peer Comparisons by Rank and Percentile

The table below compares West Alton to the other 1,032 incorporated cities, towns and CDPs in Missouri by rank and percentile using July 1, 2017 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 # 479 54th
Population Density # 1022 1st
Diversity Index # 840 19th
Median Household Income # 397 62nd
Per Capita Income # 536 48th

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

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