How many bedrooms do homes in Affton, MO have?

Name: Bedrooms in Affton, MO, 2020–2024
Creator: US Census Bureau
License: https://www.census.gov/data/developers/about/terms-of-service.html

In Affton, MO, 9.6% of homes are studios or one-bedrooms and 51.2% have three or more bedrooms (2020–2024 American Community Survey).

The most common size is 3 bedrooms, 40.8% of homes.

Figures last updated on November 12, 2026.

Studio or 1 bedroom: 9.6%
3 or more bedrooms: 51.2% (±4.0 points)
Most common: 3 bedrooms

Homes in Affton by bedroom count

Housing units by bedrooms, 2020–2024
Bedrooms	Affton	St. Louis County	Missouri	United States
No bedroom (studio)	0.3% (±0.3 points)	1.2%	2.0%	2.9%
1 bedroom	9.3% (±2.0 points)	9.5%	9.7%	10.9%
2 bedrooms	39.2% (±3.9 points)	28.0%	26.1%	25.0%
3 bedrooms	40.8% (±3.5 points)	36.2%	41.3%	38.7%
4 bedrooms	9.2% (±1.8 points)	20.1%	16.3%	17.5%
5 or more bedrooms	1.2% (±0.7 points)	5.1%	4.6%	4.9%

In Affton, the share of homes with three or more bedrooms is lower than in St. Louis County (61.4%).

It is also lower than in Missouri (62.2%).

It is lower than the national figure (61.1%).

Homes with 3 or more bedrooms in places near Affton

Nearest places with a published estimate, compared with Affton
Place	Distance	Homes with 3 or more bedrooms	Compared with this place
Affton	—	51.2% (±4.0 points)	—
Lakeshire	0.9 mi	24.3% (±5.9 points)	Lower
Wilbur Park	1.0 mi	40.1% (±12.2 points)	Not measurably different
St. George	1.2 mi	40.2% (±15.6 points)	Not measurably different
Marlborough	1.4 mi	21.6% (±13.6 points)	Lower
Grantwood Village	1.5 mi	88.7% (±14.4 points)	Higher
Green Park	1.9 mi	78.4% (±10.6 points)	Higher
Bella Villa	2.3 mi	33.4% (±10.2 points)	Lower
Lemay	2.5 mi	38.5% (±5.1 points)	Lower

Nearby places with a measurably lower figure: Lakeshire, MO (24.3%), Marlborough, MO (21.6%), Bella Villa, MO (33.4%).

Nearby places with a measurably higher figure: Grantwood Village, MO (88.7%), Green Park, MO (78.4%).

Distance is measured in a straight line between the Census Bureau’s internal points for each place.

Homes with 3 or more bedrooms across St. Louis County, place by place

Rank	Place	Homes with 3 or more bedrooms
48	Spanish Lake	59.9% (±5.2 points)
49	Calverton Park	59.7% (±15.9 points)
50	Hazelwood	56.2% (±5.2 points)
51	Creve Coeur	55.6% (±5.1 points)
52	Bridgeton	54.2% (±7.1 points)
53	Pine Lawn	51.6% (±17.4 points)
54	Affton	51.2% (±4.0 points)
55	Maryland Heights	50.5% (±3.9 points)
56 (tie)	Berkeley	50.2% (±7.8 points)
56 (tie)	Mehlville	50.2% (±4.5 points)
58 (tie)	Bellefontaine Neighbors	50.1% (±9.9 points)
58 (tie)	Rock Hill	50.1% (±11.3 points)
60	Overland	49.8% (±5.9 points)

Showing 13 of 98 places in St. Louis County, ranked from highest to lowest.

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).

Margins of error are at the 90% confidence level.

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Questions about Affton

What is the most common home size in Affton?

The most common size is 3 bedrooms, 40.8% of homes in Affton, MO.

How many studios and one-bedroom homes are in Affton?

9.6% of homes in Affton have one bedroom or none.

Sources

Selected Housing Characteristics (DP04), 2020–2024 ACS 5-year estimates — Affton CDP, Missouri

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 API needs a free key.

Request a Census API key.

DP04_0039PE, DP04_0039PM, DP04_0040PE, DP04_0040PM, DP04_0041PE, DP04_0041PM, DP04_0042PE, DP04_0042PM, DP04_0043PE, DP04_0043PM, DP04_0044PE, DP04_0044PM

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.