Demographics of Affton CDP, Missouri
Affton CDP, Missouri had 19,052 ±1,216 people in the American Community Survey, averaged over 2020–2024. The Census Bureau’s yearly estimates do not cover it: they count incorporated places and towns, not census-designated places. Age, income, poverty, housing and origin below come from the survey, averaged over 2020–2024, each with its margin of error.
Affton CDP, in four figures
- 19,052 ±1,216
- Population
- ACS 2020–2024. The Bureau publishes no yearly estimate for a census-designated place.
- 40th
- Among Missouri's places
- Of 143 of 5,000 or more, by the survey's count.
- 42.0 ±3.0
- Median age
- ACS 2020–2024.
- $79,539 ±$6,610
- Median household income
- ACS 2020–2024, in 2024 dollars.
Age, 2020–2024
The median age is 42.0 ±3.0: for men 40.3 ±3.0 and for women 43.4 ±3.1. Shares are of everyone the survey counts, in the Bureau’s sex-by-age table (B01001).
2 more columns on a wider screen
| Age | People | Share |
|---|---|---|
| Under 5 | 1,023 ±257 | 5.4% ±1.3 |
| 5 to 17 | 2,311 ±371 | 12.1% ±1.8 |
| 18 to 24 | 1,463 ±332 | 7.7% ±1.7 |
| 25 to 44 | 5,373 ±588 | 28.2% ±2.5 |
| 45 to 64 | 5,166 ±492 | 27.1% ±1.9 |
| 65 and over | 3,716 ±415 | 19.5% ±1.8 |
Income and poverty, 2020–2024
Median household income is $79,539 ±$6,610, and income per person $47,243 ±$4,940, in 2024 dollars. The median is $70,702 ±$325 in Missouri and $80,734 ±$166 in the United States.
Households by income
2 more columns on a wider screen
| Household income | Households | Share |
|---|---|---|
| Under $25,000 | 956 ±207 | 11.0% ±2.3 |
| $25,000 to $49,999 | 1,405 ±261 | 16.2% ±2.8 |
| $50,000 to $74,999 | 1,629 ±291 | 18.7% ±3.1 |
| $75,000 to $99,999 | 1,439 ±291 | 16.5% ±3.2 |
| $100,000 to $149,999 | 1,673 ±340 | 19.2% ±3.7 |
| $150,000 to $199,999 | 860 ±227 | 9.9% ±2.5 |
| $200,000 or more | 733 ±251 | 8.4% ±2.8 |
Poverty by age
The poverty rate is the share of people whose family income is below the federal threshold for their family’s size, of everyone for whom the Bureau determines it (B17020).
2 more columns on a wider screen
| Age | Below poverty | Rate |
|---|---|---|
| All ages | 1,266 ±365 | 6.6% ±1.9 |
| Under 18 | 82 to 438 | 2.6% to 13.0% |
| 18 to 59 | 412 ±163 | 4.0% ±1.5 |
| 60 and over | 594 ±182 | 11.2% ±3.2 |
A range (the estimate less and plus its margin) where the Bureau's estimate is too uncertain to state as one number: a coefficient of variation over 30%.
Housing, 2020–2024
1 more column on a wider screen
| Measure | Affton CDP | Missouri |
|---|---|---|
| Housing units | 9,092 ±537 | 2,825,287 ±1,043 |
| Occupied | 95.6% ±2.2 | 88.8% ±0.2 |
| Vacant | 2.1% to 6.7% | 11.2% ±0.2 |
| Owner occupied | 80.8% ±3.0 | 68.1% ±0.3 |
| Renter occupied | 19.2% ±2.7 | 31.9% ±0.2 |
| Median home value | $212,400 ±$5,885 | $230,300 ±$880 |
| Median gross rent | $1,015 ±$81 | $1,033 ±$6 |
| Median year built | 1958 ±2 | 1978 ±1 |
A range (the estimate less and plus its margin) where the Bureau's estimate is too uncertain to state as one number: a coefficient of variation over 30%.
Occupied and vacant are shares of all housing units; owner and renter occupied are shares of occupied units. Value and rent are medians in 2024 dollars.
Origin and place of birth, 2020–2024
Hispanic or Latino origin is not a race in the Census Bureau’s tables. Here the people of Hispanic origin, of any race, are one row, and everyone else is counted by race alone (B03002), so the rows add to the whole.
Hispanic origin and race
2 more columns on a wider screen
| Origin | People | Share |
|---|---|---|
| Hispanic or Latino | 1,131 ±482 | 5.9% ±2.5 |
| White alone, not Hispanic | 15,486 ±1,067 | 81.3% ±2.1 |
| Black alone, not Hispanic | 573 ±253 | 3.0% ±1.3 |
| Asian alone, not Hispanic | 128 to 680 | 0.7% to 3.6% |
| American Indian and Alaska Native alone, not Hispanic | 0 to 4 | 0% to < 0.1% |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0 to 19 | 0% to 0.1% |
| Some other race alone, not Hispanic | 0 to 79 | 0% to 0.4% |
| Two or more races, not Hispanic | 1,425 ±480 | 7.5% ±2.5 |
A range (the estimate less and plus its margin) where the Bureau's estimate is too uncertain to state as one number: a coefficient of variation over 30%.
Place of birth and citizenship
“Born a citizen outside the states” counts people born in Puerto Rico, the island areas, or abroad to American parents. Naturalized citizens and those who are not citizens together make up the people born abroad (B05002).
2 more columns on a wider screen
| Born | People | Share |
|---|---|---|
| Born in the state | 13,317 ±938 | 69.9% ±2.1 |
| Born in another state | 3,202 ±445 | 16.8% ±2.1 |
| Born a citizen outside the states | 102 to 754 | 0.5% to 4.0% |
| Born abroad | 2,105 ±564 | 11.0% ±2.9 |
| Naturalized citizens | 1,327 ±441 | 7.0% ±2.3 |
| Not citizens | 393 to 1,163 | 4.1% ±2.0 |
A range (the estimate less and plus its margin) where the Bureau's estimate is too uncertain to state as one number: a coefficient of variation over 30%.
Affton CDP among the places of Missouri
40th of 143 places of 5,000 or more by the survey’s 2020–2024 count. Every one is listed on the Missouri page.
| Place | ACS 2020–2024 |
|---|---|
| Arnold city | 20,956 ±52 |
| Old Jamestown CDP | 20,651 ±1,626 |
| Rolla city | 20,287 ±43 |
| Republic city | 19,829 ±181 |
| Warrensburg city | 19,582 ±39 |
| Affton CDP | 19,052 ±1,216 |
| Creve Coeur city | 18,643 ±45 |
| Concord CDP | 18,368 ±1,277 |
| Farmington city | 18,282 ±22 |
| Ferguson city | 18,213 ±30 |
| Manchester city | 18,160 ±52 |
Sources
- Census Bureau population estimates — incorporated places and New England towns — U.S. Census Bureau · U.S. Government work · retrieved September 25, 2026
- American Community Survey 5-year estimates — table-based Summary File · U.S. Government work
Data retrieved