Lake Saint Louis, MO Profile: Facts & Data

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Lake Saint Louis, Missouri - Basic Facts

The City of Lake Saint Louis had a population of 16,707 as of July 1, 2019. Lake Saint Louis ranks in the upper 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 Lake Saint Louis is located at latitude 38.7976 and longitude -90.7857 in St. Charles County. The formal boundaries for the City of Lake Saint Louis encompass a land area of 8.03 sq. miles and a water area of 0.81 sq. miles. St. Charles County is in the Central time zone (GMT -6). The elevation is 564 feet.

The City of Lake Saint Louis (GNIS ID: 2395600) 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 Lake Saint Louis is located within Township of Lake Saint Louis, a minor civil division (MCD) of St. Charles County.


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  1. Lake Saint Louis 2019 Demographic Data
  2. Growth Rates for Lake Saint Louis (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 - 2019 Demographics

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Boundary Maps, Demographic Data, School Zones Review maps and data for the neighborhood, city, county, ZIP Code, and school zone. July 1, 2019, data includes home values, household income, percentage of homes owned, rented or vacant, etc.


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Lake Saint Louis, MO Data & Demographics (As of July 1, 2019)

HOUSING AFFORDABILITY INDEX

Lake Saint Louis, MO Housing Affordability Index is 159
State of Missouri Housing Affordability Index is 156
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.

WEALTH INDEX

Lake Saint Louis, MO Wealth Index is 181
State of Missouri Wealth Index is 82
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.

These new demographic attributes are availiable for Neighborhoods, Cities, Counties, and ZIP Codes.

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  3. The new 2-Minute Introduction and Concise Guide to Big Data which will help you make the most effective use of HomeTownLocator Tools.
  4. See the References & Data Sources page for more information about methodology and sources of data.
  5. See the Missouri COVID-19 Data and US COVID-19 Data for more information on the spread of the novel coronavirus.

POPULATION

Total Population 16,707 (100%)
Population in Households 16,707 (100.0%)
Population in Families 14,253 (85.3%)
Population in Group Quarters1 0
Population Density 2,008
Diversity Index2 22
 

INCOME

Median Household Income $91,839
Average Household Income $119,930
Per Capita Income $46,823
Wealth Index4 181

HOUSING

Total Housing Units 7,056 (100%)
Owner Occupied HU 5,565 (78.9%)
Renter Occupied HU 1,124 (15.9%)
Vacant Housing Units 366 ( 5.2%)
Median Home Value $285,763
Housing Affordability Index3 159
 

HOUSEHOLDS

Total Households 6,690
Average Household Size 2.5
Family Households 4,898
Average Family Size 3
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 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.
  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 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.

GROWTH RATE / YEAR

2010-2019 2019-2024
Population 1.5% 1.4%
Households 1.52% 1.44%
Families 1.63% 1.34%
Median Household Income   2.08%
Per Capita Income   1.91%

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

The table below compares Lake Saint Louis to the other 1,034 incorporated cities, towns and CDPs in Missouri by rank and percentile using July 1, 2019 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 # 50 95th
Population Density # 107 90th
Diversity Index # 259 75th
Median Household Income # 39 96th
Per Capita Income # 39 96th

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

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