Housing data for Affton, MO
Affton, MO has an estimated 19,052 residents and 9,092 homes (US Census Bureau, 2020–2024 American Community Survey).
It is an unincorporated community in St. Louis County.
19.2% of households rent.
The median gross rent is $1,015 a month.
Figures last updated on .
- Residents
- 19,052 (±1,216)
- Housing units
- 9,092 (±537)
- Households that rent
- 19.2%
- Median gross rent
- $1,015
- Residents since 2015–2019
- −5.4%
What stands out in Affton
Homes in buildings of 5 or more units: 8.2% (±1.8 points) in Affton, lower than in St. Louis County (16.6%).
Households that rent: 19.2% (±2.8 points) in Affton, lower than in St. Louis County (30.8%).
Renters paying 30% or more of income: 31.9% (±8.6 points) in Affton, lower than in St. Louis County (48.4%).
Working from home: 11.6% (±2.6 points) in Affton, lower than in St. Louis County (18.3%).
Housing in Affton at a glance
- Median rent: $1,015 median gross rent a month
- Rent by bedrooms: $1,186 median gross rent, 2 bedrooms
- Rent burden: 31.9% of renters pay 30% or more of income
- Renters and owners: 19.2% of households rent
- Income and affordability: $79,539 median household income
- Home values: $212,400 median home value
- Homeowner costs: $1,498 median monthly cost with a mortgage
- Property taxes: $2,676 median real estate taxes a year
- Types of homes: 8.2% of homes are in buildings of 5 or more units
- Bedrooms: 51.2% of homes have 3 or more bedrooms
- Age of homes: 83.2% of homes were built before 1980
- Vacancy rate: 4.4% rental vacancy rate (Small sample: wide margin of error)
- Heating fuel: 81.3% heat with utility gas
- Commute and cars: 23.5 minutes average trip to work
- Growth: −5.4% residents since 2015–2019
- How long people stay: 17.8% moved in since 2020
- Crowding and facilities: 1.2% of homes have more than 1 person per room
- Fair Market Rent: $1,370 Small Area FMR, 2 bedrooms (ZIP 63123)
Affton against St. Louis County, its state and the nation
| Affton | St. Louis County | Missouri | United States | |
|---|---|---|---|---|
| Residents | 19,052 (±1,216) | 995,569 (exact) | 6,191,814 (exact) | 334,922,499 |
| Housing units | 9,092 (±537) | 446,192 (±189) | 2,825,287 (±1,043) | 143,775,355 |
| Households that rent | 19.2% (±2.8 points) | 30.8% (±0.5 points) | 31.9% (±0.2 points) | 34.8% |
| Median gross rent | $1,015 (±$81) | $1,209 (±$12) | $1,033 (±$6) | $1,413 |
| Median household income | $79,539 (±$6,610) | $82,936 (±$1,390) | $70,702 (±$325) | $80,734 |
| Median home value | $212,400 (±$5,885) | $276,800 (±$2,745) | $230,300 (±$880) | $332,700 |
| Median real estate taxes (a year) | $2,676 (±$82) | $3,335 (±$34) | $1,948 (±$11) | $3,119 |
| Built before 1980 | 83.2% (±6.6 points) | 68.6% (±1.0 points) | 52.8% (±0.4 points) | 49.7% |
| Average commute | 23.5 minutes (±1.6) | 23.1 minutes (±0.3) | 23.5 minutes (±0.1) | 26.4 minutes |
| Households with broadband | 92.0% (±2.2 points) | 93.4% (±0.3 points) | 89.3% (±0.2 points) | 91.0% |
| Median age of residents | 42.0 years (±3.0) | 40.3 years (±0.2) | 39.0 years (±0.2) | 38.9 years |
Affton covers 4.6 square miles of land, about 4,169 residents per square mile (Census Bureau Gazetteer).
How Affton has changed since 2015–2019
| 2015–2019 | 2020–2024 | Amount of change | Verdict | |
|---|---|---|---|---|
| Residents | 20,148 (±904) | 19,052 (±1,216) | −5.4% | Not a measurable change |
| Housing units | 9,229 (±325) | 9,092 (±537) | −1.5% | Not a measurable change |
| Median gross rent | $885 (±$49) | $1,015 (±$81) | +14.7% | No measurable change after inflation |
| Median home value | $149,300 (±$3,597) | $212,400 (±$5,885) | +42.3% | Up after inflation |
| Median household income | $60,969 (±$4,832) | $79,539 (±$6,610) | +30.5% | No measurable change after inflation |
| Median owner cost with a mortgage | $1,212 (±$40) | $1,498 (±$53) | +23.6% | No measurable change after inflation |
| Median real estate taxes | $2,374 (±$58) | $2,676 (±$82) | +12.7% | Down after inflation |
| Households that rent | 25.4% (±3.0 points) | 19.2% (±2.8 points) | −6.2 percentage points | Measurable decrease |
| Rental vacancy rate | 2.6% (±2.8 points) | 4.4% (±6.1 points) | +1.8 percentage points | Not a measurable change |
The Census Bureau publishes 2015–2019 dollars in 2019 dollars and 2020–2024 dollars in 2024 dollars.
Prices (the CPI-U, US Bureau of Labor Statistics) rose 22.7% between 2019 and 2024, so a dollar figure’s verdict compares the two after raising the earlier one by that much, using the Census Bureau’s test for a difference.
The two periods do not overlap, as the Census Bureau recommends for 5-year estimates.
ZIP codes in Affton
| ZIP code | Share of the ZIP’s land in this place | Residents | Median gross rent | Median home value | Median household income |
|---|---|---|---|---|---|
| 63123 | 37% | 49,077 | $1,006 | $219,400 | $77,055 |
A ZIP code is a mail route rather than a boundary, so the Census Bureau publishes figures for ZIP Code Tabulation Areas built from census blocks; the share column says how much of each one’s land lies in this place.
Places near Affton
| Place | Distance | Median gross rent | Median home value | Households that rent |
|---|---|---|---|---|
| Lakeshire | 0.9 mi | $1,032 | $258,700 | 60.0% |
| Wilbur Park | 1.0 mi | $1,300 | $204,900 | 17.2% |
| St. George | 1.2 mi | $833 | $161,100 | 12.8% |
| Marlborough | 1.4 mi | $990 | $191,600 | 87.1% |
| Grantwood Village | 1.5 mi | — | $535,300 | 4.2% |
| Green Park | 1.9 mi | $992 | $238,800 | 11.6% |
| Bella Villa | 2.3 mi | $1,200 | $161,800 | 17.0% |
| Lemay | 2.5 mi | $881 | $152,200 | 22.9% |
Places in Missouri most like Affton
| Place | Median gross rent | Median home value | Median household income | Households that rent |
|---|---|---|---|---|
| Green Park | $992 | $238,800 | $79,141 | 11.6% |
| Buckner | $986 | $197,600 | $87,350 | 23.6% |
| Higginsville | $980 | $166,100 | $81,033 | 25.5% |
| Concord | $1,215 | $303,600 | $89,038 | 14.0% |
| Lemay | $881 | $152,200 | $60,399 | 22.9% |
| Pasadena Hills | $968 | $252,800 | $70,341 | 26.2% |
Matched on rent, home value, income, the share who rent, the age of the homes, the share in apartment buildings and the commute, each measured against the spread across Missouri.
HUD Fair Market Rent for Affton, fiscal year 2027
| Studio | 1 bedroom | 2 bedrooms | 3 bedrooms | 4 bedrooms |
|---|---|---|---|---|
| $1,064 | $1,104 | $1,349 | $1,731 | $1,997 |
HUD also publishes a Small Area Fair Market Rent for each ZIP code in the area; the Fair Market Rent page for this place lists its ZIP codes.
HUD income limits for Affton, fiscal year 2026
| Household size | Extremely low (30%) | Very low (50%) | Low (80%) |
|---|---|---|---|
| 1 person | $23,850 | $39,750 | $63,600 |
| 2 people | $27,250 | $45,400 | $72,650 |
| 3 people | $30,650 | $51,100 | $81,750 |
| 4 people | $34,050 | $56,750 | $90,800 |
| 5 people | $38,680 | $61,300 | $98,100 |
| 6 people | $44,360 | $65,850 | $105,350 |
| 7 people | $50,040 | $70,400 | $112,600 |
| 8 people | $55,720 | $74,950 | $119,900 |
These are the limits HUD sets for its housing programs in the St. Louis, MO-IL HUD Metro FMR Area, where HUD’s median family income for fiscal year 2026 is $113,500.
A program can use its own limits; tax-credit and local programs often do.
Affton is a census-designated place: an unincorporated community the Census Bureau draws for statistics, with no municipal government of its own.
Survey years: 2020–2024 (American Community Survey 5-year estimates), compared with 2015–2019.
Margins of error are at the 90% confidence level.
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Questions about Affton
What is the average rent in Affton, MO?
The Census Bureau publishes the median rather than the average: the median gross rent in Affton is $1,015 (±$81) a month (2020–2024 American Community Survey), so half of renting households pay less and half pay more.
How much is a one-bedroom apartment in Affton?
The median gross rent for a one-bedroom home in Affton, MO is $796 (±$47) a month (2020–2024 American Community Survey).
Are renters in Affton rent-burdened?
31.9% of renting households in Affton pay 30% or more of their income in gross rent, the share housing researchers usually call rent-burdened (2020–2024 American Community Survey).
How many renters are there in Affton?
Affton has an estimated 1,666 (±261) renting households, 19.2% of its occupied homes (2020–2024 American Community Survey).
What is the median household income in Affton?
The median household income in Affton is $79,539 (±$6,610) a year (2020–2024 American Community Survey).
What is the average home value in Affton, MO?
The Census Bureau publishes the median: $212,400 (±$5,885) for owner-occupied homes in Affton (2020–2024 American Community Survey).
Is Affton growing?
In Affton, the number of residents went from 20,148 in 2015–2019 to 19,052 in 2020–2024 (−5.4%), not a measurable change.
What ZIP codes are in Affton?
The ZIP code that covers Affton is 63123.
What is the median rent in ZIP code 63123?
The median gross rent in ZIP Code Tabulation Area 63123 is $1,006 (±$46) a month (2020–2024 American Community Survey).
Sources
- Demographic and Housing Estimates (DP05), 2020–2024 ACS 5-year estimates — Affton CDP, Missouri
- Selected Housing Characteristics (DP04), 2020–2024 ACS 5-year estimates — Affton CDP, Missouri
- Selected Economic Characteristics (DP03), 2020–2024 ACS 5-year estimates — Affton CDP, Missouri
- Median Real Estate Taxes Paid by Mortgage Status (B25103), 2020–2024 ACS 5-year estimates — Affton CDP, Missouri
- Selected Social Characteristics (DP02), 2020–2024 ACS 5-year estimates — Affton CDP, Missouri
- Total Population (B01003), 2015–2019 ACS 5-year estimates — Affton CDP, Missouri
- Median Gross Rent (B25064), 2015–2019 ACS 5-year estimates — Affton CDP, Missouri
- HUD Fair Market Rents, fiscal year 2027: St. Louis, MO-IL HUD Metro FMR Area
- HUD Small Area Fair Market Rents, fiscal year 2027
- HUD Income Limits, fiscal year 2026: St. Louis, MO-IL HUD Metro FMR Area
- US Census Bureau, American Community Survey 2020–2024 5-year estimates for ZIP Code Tabulation Areas
- Consumer Price Index for All Urban Consumers (CPI-U), US city average, all items, US Bureau of Labor Statistics: annual averages 2019 and 2024
- US Census Bureau, 2024 Gazetteer Files
To check these figures in the Census Bureau’s own API, request the variables below from the 2024 ACS 5-year data profile (acs/acs5/profile) for Affton CDP, Missouri (place:00280, in state:29).
Each estimate (E or PE) has a margin of error beside it (M or PM).
The 2015–2019 figures are B01003_001E, B01003_001M, B25064_001E, B25064_001M from the 2019 release.
The API needs a free key.
DP05_0001E, DP05_0001M, DP04_0001E, DP04_0001M, DP04_0047PE, DP04_0047PM, DP04_0134E, DP04_0134M, DP03_0062E, DP03_0062M, DP04_0089E, DP04_0089M
This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.
Figures are published by the US Census Bureau, HUD, the Bureau of Labor Statistics and the FBI; Seayora reproduces them and does not adjust them, except where a sentence says it compares dollar figures after inflation. They describe the whole place, not any one building or street, and are not an appraisal, a rent determination, a tax bill, a safety rating or legal advice.
Figures last updated on .