Lake St. Louis city, Missouri demographics
Population: 16,665
Median age: 43.9
Median household income: 106,098
Lake St. Louis is a city in St. Charles County, Missouri, United States.
Demographics, population, home values, social and economic characteristics of Lake St. Louis city, MO.
Population
| 2021 | 16,665 |
| 2020 | 16,357 |
| 2019 | 15,989 |
| 2018 | 15,646 |
| 2017 | 15,371 |
| 2016 | 15,150 |
| 2015 | 14,933 |
| 2014 | 14,759 |
| 2013 | 14,618 |
| 2012 | 14,390 |
| 2011 | 14,231 |
| 2010 | 13,900 |
| 2009 | 13,821 |
Census data for Lake St. Louis city, Missouri
Demographic and housing estimates in Lake St. Louis city, Missouri
| Total population | 16,665 |
| Male | 8,462 |
| Female | 8,203 |
| Total population | 16,665 |
| Under 5 years | 574 |
| 5 to 9 years | 1,237 |
| 10 to 14 years | 841 |
| 15 to 19 years | 1,085 |
| 20 to 24 years | 1,261 |
| 25 to 34 years | 1,433 |
| 35 to 44 years | 2,144 |
| 45 to 54 years | 2,218 |
| 55 to 59 years | 1,148 |
| 60 to 64 years | 1,366 |
| 65 to 74 years | 1,782 |
| 75 to 84 years | 1,188 |
| 85 years and over | 388 |
| Median age (years) | 43.9 |
| Under 18 years | 3,422 |
| 16 years and over | 13,849 |
| 18 years and over | 13,243 |
| 21 years and over | 12,809 |
| 62 years and over | 4,185 |
| 65 years and over | 3,358 |
| Total population | 16,665 |
| One race | 15,986 |
| White | 14,923 |
| Black or African American | 715 |
| American Indian and Alaska Native | 0 |
| Asian | 235 |
| Native Hawaiian and Other Pacific Islander | 0 |
| Some other race | 113 |
| Two or more races | 679 |
| Citizen, VOTING AGE 18 and over population | 12,984 |
| Male Citizen, VOTING AGE 18 and over population | 6,485 |
| Female Citizen, VOTING AGE 18 and over population | 6,499 |
Social characteristics in Lake St. Louis city, Missouri
| Total households | 6,747 |
| Family households (families) | 4,394 |
| Married-couple family | 468 |
| Male householder, no wife present, family | 691 |
| Female householder, no husband present, family | 476 |
| Nonfamily households | 1,194 |
| Average household size | 2,306 |
| Average family size | 2.47 |
Economic characteristics in Lake St. Louis city, Missouri
| Total households | 6,747 |
| Less than $10,000 | 215 |
| $10,000 to $14,999 | 41 |
| $15,000 to $24,999 | 199 |
| $25,000 to $34,999 | 251 |
| $35,000 to $49,999 | 765 |
| $50,000 to $74,999 | 925 |
| $75,000 to $99,999 | 818 |
| $100,000 to $149,999 | 1,431 |
| $150,000 to $199,999 | 787 |
| $200,000 or more | 1,315 |
| Median household income (dollars) | 106,098 |
Housing characteristics in Lake St. Louis city, Missouri
| Total housing units | 6,961 |
| Occupied housing units | 6,747 |
| Vacant housing units | 214 |
| Total housing units | 6,961 |
| 1-unit, detached | 4,601 |
| 1-unit, attached | 926 |
| 2 units | 61 |
| 3 or 4 units | 266 |
| 5 to 9 units | 615 |
| 10 to 19 units | 289 |
| 20 or more units | 203 |
| Mobile home | 0 |
| Boat, RV, van, etc. | 0 |
| Total housing units | 6,961 |
| Built 2014 or later | 56 |
| Built 2010 to 2013 | 1,021 |
| Built 2000 to 2009 | 1,882 |
| Built 1990 to 1999 | 1,294 |
| Built 1980 to 1989 | 1,115 |
| Built 1970 to 1979 | 1,343 |
| Built 1960 to 1969 | 223 |
| Built 1950 to 1959 | 27 |
| Built 1940 to 1949 | 0 |
| Built 1939 or earlier | 0 |
| Total housing units | 6,961 |
| 1 room | 0 |
| 2 rooms | 76 |
| 3 rooms | 322 |
| 4 rooms | 771 |
| 5 rooms | 1,309 |
| 6 rooms | 779 |
| 7 rooms | 1,041 |
| 8 rooms | 718 |
| 9 rooms or more | 1,945 |
| Median rooms | 6.7 |
| Total housing units | 6,961 |
| No bedroom | 24 |
| 1 bedroom | 455 |
| 2 bedrooms | 1,725 |
| 3 bedrooms | 2,195 |
| 4 bedrooms | 1,964 |
| 5 or more bedrooms | 598 |
| Occupied housing units | 6,747 |
| Owner-occupied | 5,216 |
| Renter-occupied | 1,531 |
| Average household size of owner-occupied unit | 2.59 |
| Average household size of renter-occupied unit | 2.07 |
| Occupied housing units | 6,747 |
| Moved in 2017 or later | 777 |
| Moved in 2015 to 2016 | 2,114 |
| Moved in 2010 to 2014 | 1,108 |
| Moved in 2000 to 2009 | 1,881 |
| Moved in 1990 to 1999 | 608 |
| Moved in 1989 and earlier | 259 |
| Owner-occupied units | 5,216 |
| Less than $50,000 | 79 |
| $50,000 to $99,999 | 227 |
| $100,000 to $149,999 | 157 |
| $150,000 to $199,999 | 445 |
| $200,000 to $299,999 | 1,632 |
| $300,000 to $499,999 | 1,930 |
| $500,000 to $999,999 | 715 |
| $1,000,000 or more | 31 |
| Median (dollars) | 305,600 |
| Owner-occupied units | 5,216 |
| Housing units with a mortgage | 3,838 |
| Housing units without a mortgage | 1,378 |
| Occupied units paying rent | 1,486 |
| Less than $500 | 0 |
| $500 to $999 | 363 |
| $1,000 to $1,499 | 742 |
| $1,500 to $1,999 | 342 |
| $2,000 to $2,499 | 39 |
| $2,500 to $2,999 | 0 |
| $3,000 or more | 0 |
| Median (dollars) | 1,281 |
| No rent paid | 45 |
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