HomeMissouriSt. Louis CountyAffton CDP
Affton CDP, Missouri: commercial real estate data.
Affton CDP is a Census CDP of 19,052 people across 4.57 square miles of land, in St. Louis County. Median household income is $79,539, 80.8 percent of occupied homes are owned, and the SBA record carries 1 7(a) approvals to borrowers here worth $1.9 m.
66 sourced place values · tier FULL · 7 sections · underlined figures are computed by MMCG Analytics, not published by the agency
Affton
What Affton is
- Census place typeCDP
- Land area4.57 sq mi
- Water area0 sq mi
- Population per square mile of land4,169
- County holding the largest share of its areaSt. Louis County, 100.0 percent
US Census Bureau, cartographic boundary file, places, 2024 vintage. US Census Bureau, American Community Survey 5-Year Estimates, place level, 2020-2024 5-year.
Affton
How many people live in Affton
- Population19,052
- Median age42.0
- Population under 183,334
- Share under 1817.5 percent
- Population 65 and over3,716
- Share 65 and over19.5 percent
- Households8,695
- Family households4,950
- Share of households that are families56.9 percent
US Census Bureau, American Community Survey 5-Year Estimates, place level, 2020-2024 5-year.
Affton
Income and work in Affton
- Median household income$79,539
- Per capita income$47,243
- Civilian labor force11,528
- Employed11,360
- Unemployed168 plus or minus 96
- Unemployment rate1.5 percent plus or minus 0.8
- Adults 25 and over14,255
- Adults 25 and over with a high school diploma or higher91.9 percent
- Adults 25 and over with a bachelor degree or higher36.6 percent
- Adults 25 and over with a graduate degree15.4 percent
US Census Bureau, American Community Survey 5-Year Estimates, place level, 2020-2024 5-year.
Affton
Housing in Affton
- Housing units9,092
- Occupied units8,695
- Vacant units397 plus or minus 209
- Vacancy rate4.4 percent plus or minus 2.3
- Owner occupied7,029
- Renter occupied1,666
- Ownership rate80.8 percent
- Median owner-occupied home value$212,400
- Median gross rent, monthly$1,015
- Annual rent as a share of median income15.3 percent
- Single family units7,707
- Share single family84.8 percent
- Units in buildings of two or more1,336
- Share in buildings of two or more14.7 percent
- Mobile homes49 plus or minus 50
- Median year structure built1958
US Census Bureau, American Community Survey 5-Year Estimates, place level, 2020-2024 5-year.
Affton
How Affton gets to work
- Workers 16 and over who commute9,789
- Commuting under 15 minutes2,282
- Share commuting under 15 minutes23.3 percent
- Commuting 30 minutes or more3,065
- Share commuting 30 minutes or more31.3 percent
- Drove alone77.1 percent
- Carpooled7.8 percent plus or minus 3.2
- Public transport0.8 percent plus or minus 0.8
- Walked0.7 percent plus or minus 0.5
- Worked from home11.6 percent plus or minus 2.4
US Census Bureau, American Community Survey 5-Year Estimates, place level, 2020-2024 5-year.
Affton
SBA loans in Affton (7(a))
- Approvals1
- Gross approval$1,915,400
- Average approval$1,915,400
- Median approval$1,915,400
- Ninetieth percentile approval$1,915,400
- Largest approval$1,915,400
- Jobs supported198
- Jobs per approval198.0
- Loans with a final outcome0
- Paid in full0
- Charged off0
- Median term120 months
- Share on real estate terms of 20 years or more0.0 percent
- Share to franchises0.0 percent
- Distinct lenders1
- Distinct industries by NAICS1
A charge-off rate is not published here. only 0 resolved loans, too few to publish a rate, and a rate over that few outcomes would move several points on one loan.
US Small Business Administration, 7(a) FOIA release, FY2020 to FY2026 year to date, as of 2026-06-30.
St. Louis County, not Affton
St. Louis County context, not Affton figures
These are St. Louis County figures. There is no place level equivalent published for any of them, so they are shown as the county backdrop and never as Affton measurements.
- Establishments in St. Louis County29,717
- Employment at those establishments, St. Louis County629,036
- Covered employment, St. Louis County596,676
- Average annual pay, St. Louis County$75,926
- Average weekly wage, St. Louis County$1,460
- Housing units permitted, St. Louis County1,193
- Of those, single family, St. Louis County687
- County product, 2024, St. Louis County$114,807,071,000
- County product change over the prior year, St. Louis County4.1 percent
- Average income of an arriving household, St. Louis County$94,672
Every figure in this section is published for St. Louis County as a whole and is not a measurement of Affton. It is here because a county backdrop is what a credit committee reads a place against, and it is labelled so that it can never be quoted as the place's own.
US Census Bureau, County Business Patterns, 2023. US Bureau of Labor Statistics, Quarterly Census of Employment and Wages, 2024 annual averages. US Census Bureau, Building Permits Survey, 2024 annual. US Bureau of Economic Analysis, Regional, table CAGDP2, CAGDP2, through 2024. US Internal Revenue Service, Statistics of Income county migration flows, 2021 to 2022 filing years.
Coverage
What this page does not hold.
Every item below could be filled with a plausible figure. None of them is. On a page a lender may read, a number that cannot be traced is worse than an absence, so the absences are named.
- This place is not listed as a community in the FEMA Community Status Book, so no NFIP participation or CRS class is shown.
- Parcel level detail, zoning and flood zone at an address are resolved in the platform, not on this page.
SBA figures count approvals to borrowers whose address is in the place. They are not approvals for projects inside the place boundary: the tape records a borrower city and a project county, and those can differ.
Common questions
Affton questions, answered from the record.
How many people live in Affton, Missouri?
19,052, in 8,695 households. Affton CDP covers 4.57 square miles of land, which is 4,169 people per square mile. Source: US Census Bureau, American Community Survey 5-Year Estimates, place level, 2020-2024 5-year.
What county is Affton in?
St. Louis County, which holds 100.0 percent of the place by area. Source: US Census Bureau, cartographic boundary file, places, 2024 vintage.
What is the median household income in Affton?
$79,539. The median owner-occupied home is valued at $212,400. Median gross rent is $1,015 per month. Source: US Census Bureau, American Community Survey 5-Year Estimates, place level, 2020-2024 5-year.
How much SBA lending goes to Affton businesses?
1 7(a) approvals totalling $1.9 m, across 1 lenders, median approval $1,915,400. These count approvals to borrowers whose address is in Affton, not projects sited inside the place boundary, and they are approvals recorded in the release rather than loans disbursed.
Do SBA loans to Affton borrowers get paid back?
No rate is published for Affton. only 0 resolved loans, too few to publish a rate, and a percentage over that few outcomes would move several points on a single loan. The counts are shown instead.
Are the county figures on this page Affton figures?
No, and they are labelled so. County Business Patterns, QCEW, the Building Permits Survey, BEA product and IRS migration are published for St. Louis County as a whole and there is no place level equivalent. They appear in one clearly marked section as context and are never presented as measurements of Affton.
Is zoning published for Affton?
Not yet. The zoning layer is in build. Nothing on this page presents parcel level zoning.