Each edition grades its towns against each other only.
A town of 19,052, settled in 1876. A typical home costs 3 years of the St.
Affton gives you more for your money than most places: a typical home costs about $243K, 3 years of the St. Louis metro’s $80K median household income. It grades A overall, 25th of 247 graded towns in Missouri. On the plus side, the median household earns $80K. 18% of residents are under 18 in Affton, below both the Missouri town median (23%) and the median of U.S. towns (22%). Affton is more walkable than 72% of U.S. towns.
Where Affton beats most towns.
Where Affton’s working residents go each day. Line width shows the share.
Census LEHD 2023
Each subject compared with towns across the country (schools within Missouri), ordered by how far Affton is from typical.
How TownRatings grades towns →
Census counts: 24,464 in 1970, 20,417 in 2020. The archive holds 12 old photos and papers going back to 1913 and 6 maps from 1933 on.
3 places on the National Register of Historic Places.
Museums, parks, gardens and other places to visit around Affton. Close and well known come first.
Big draw16 mi State parkCahokia
Big draw9 mi Stadium & arenaThe Dome at America's Center
9 mi Stadium & arenaBusch Stadium
9 mi National ParkGateway Arch National Park2.2M visitors a year
19 mi Theme parkMid America Adventure
9 mi Stadium & arenaEnterprise CenterCahokia: Thank You (24 Millions ) views, CC BY 2.0 · The Dome at America's Center: Paul Sableman, CC BY 2.0 · Busch Stadium: Lee Ann Ratledge, CC BY 4.0 · Gateway Arch National Park: Daniel Schwen, CC BY-SA 4.0 · Mid America Adventure: Chris Hagerman from New Port Richey, FL, US, CC BY 2.0 · Enterprise Center: Haaron755, CC BY-SA 3.0
Affton is unincorporated, so St. Louis County and regional agencies provide most services.
EPA SDWIS (Oct 9, 2026) · HIFLD + EIA-861 2025 · Census 2020 ZCTAs · NCES 2024–25 · registration: vote.gov, updated Nov 18, 2024.
Ordered by what stands out in Affton.
Affton pairs an A overall with homes cheaper than the Missouri norm, but it has little public open land.
Most working residents leave Affton for work: only 2% work in town. 6.6% of Affton residents live below the poverty line. Since 2013, Affton has lost 485 jobs, to 3,805 in 2023.
| Affton | Missouri towns | U.S. towns | |
|---|---|---|---|
| Below the poverty line | 6.6% | 14% | 9.6% |
| Working residents who work in town | 2.3% | 13% | 8% |
| Average trip to work | 24 minutes | 22 minutes | 25 minutes |
| Median household income | $80,000 | $62,000 | $80,000 |
Census LEHD 2023 · ACS
Its public schools are run by the Affton 101 school district. Two of its 6 schools are below, each with why it’s listed. The largest public high school is Affton High, with 761 students.
| School | Level | Students | Letter |
|---|---|---|---|
| Mesnier Primary SCH.Largest public elementary schoolGrades PK–2 | Grades PK–2 | 741 | – |
| Affton HighLargest public high schoolGrades 9–12 | Grades 9–12 | 761 | C+ |
NCES · EDFacts · graded within MO on state tests and graduation
Affton beats the Missouri average on 16 of 32 CDC measures and trails it on 0. 32% of adults sleep under 7 hours in Affton.
| Affton | Missouri towns | U.S. towns | |
|---|---|---|---|
| Sleep under 7 hours (CDC PLACES) | 32% | 38% | 36% |
| Obesity (CDC PLACES) | 30% | 38% | 35% |
| Diabetes (CDC PLACES) | 10% | 12% | 12% |
| Fair or poor health (CDC PLACES) | 17% | 22% | 19% |
| What stands out | Affton | MO |
|---|---|---|
| Fewer adults facing food insecurity | 9.8% | 13.7% |
| Fewer adults facing a utility shut-off | 6.8% | 9% |
CDC PLACES 2025 · modeled estimates for adults · CMS · HRSA
Affton has chilly winters and warm summers. The July high in Affton is 89°F.
NOAA U.S. Climate Normals, 1991–2020
Expected storm and flood damage is higher than in 66% of U.S. communities. Since 1979, 32 flood insurance claims have been paid out in Affton.
FEMA flood insurance claims · FEMA National Risk Index · OpenFEMA
Children under 18 are 18% of residents (22% statewide); adults 35 to 64 are 42% of residents (37% statewide). 37% of adults 25 and older have a bachelor’s degree or more, vs 32% across Missouri.
| Affton | Missouri towns | U.S. towns | |
|---|---|---|---|
| Bachelor’s degree or more, 25+ | 37% | 22% | 29% |
| Median age | 42 years | 38.5 years | 40.5 years |
| Aged 65 or older | 20% | 17% | 18% |
51% women, 49% men
That’s an even split within the survey’s margin of ±2.1 points. Across Missouri, 50.7% of residents are women.
| Affton | MO | U.S. | |
|---|---|---|---|
| Under 10 | 9.4% | 11.9% | 11.6% |
| 10 to 17 | 8.1% | 10.4% | 10.3% |
| 18 to 24 | 7.7% | 9.1% | 9.1% |
| 25 to 34 | 13.5% | 13.2% | 13.7% |
| 35 to 44 | 14.7% | 12.8% | 13.2% |
| 45 to 54 | 10.5% | 11.6% | 12.2% |
| 55 to 64 | 16.6% | 13% | 12.7% |
| 65 to 74 | 11.4% | 10.6% | 10.2% |
| 75 and older | 8.1% | 7.3% | 7% |
| No diploma | 8.1% | 8.1% | 10.4% |
| High school | 23.3% | 30.2% | 26% |
| Some college | 21.6% | 20.8% | 19.1% |
| Associate’s | 10.4% | 8.4% | 8.8% |
| Bachelor’s | 21.2% | 19.8% | 21.6% |
| Graduate | 15.4% | 12.6% | 14.1% |
U.S. Census Bureau · ACS 2020-2024 5-year estimates
Affton grades A overall with a typical home of about $243K, below the Missouri typical value; only 11 of the 55 Missouri towns graded A− or better can say that.
Typical home values rose 3% in the year to September 2026.
| Affton | Missouri towns | U.S. towns | |
|---|---|---|---|
| Households that own their home | 81% | 64% | 73% |
| Median rent | $1,015 a month | $970 a month | $1,185 a month |
Zillow Home Value Index · Redfin Data Center
Just 21 of its 2,909 acres are conserved, so there is little public open land in Affton itself; its outdoors grade is C−.
0.2 miles of trail in 2 parks and preserves.
| Biggest places to walk | Trails | Acres |
|---|---|---|
| 1. Ohlendorf County Park | 0.1 mi | 11 |
| 2. Teakwood Park | — | 1 |
Trails & parks © OpenStreetMap contributors · Conserved land: USGS PAD-US
23 within 15 miles of the center of Affton
About 6 of every 100 Affton residents are enrolled in college, about the same as Missouri.
3 places in Affton on the National Register of Historic Places.
Unincorporated community in Missouri, U.S.
Affton is an unincorporated community and census-designated place (CDP) in south St. Louis County, Missouri, United States, near St. Louis. The population was 20,417 at the 2020 United States census.
From Wikipedia, licensed CC BY-SA 4.0 · facts via Wikidata (CC0)
9 towns share a border with Affton.
Concord next door grades higher for schools (B+ to Affton’s C+) and lower for cost of living (C+ to A−).
| Town | MO rank | Overall | Cost | Safety | Schools | Health |
|---|---|---|---|---|---|---|
| Affton | #25 | A | A− | — | C+ | B+ |
| St. George | — | — | A | — | B | B− |
| Marlborough | — | — | B− | — | C+ | A− |
| Lakeshire | — | — | C+ | — | A− | B+ |
| Green Park | #2 | A+ | A− | — | B+ | A− |
| Concord | #32 | A− | C+ | — | B+ | B+ |
| Grantwood Village | — | — | — | — | — | — |
| Crestwood | #11 | A | B | B− | A | A |
St. George, Marlborough and Lakeshire have fewer than 2,500 residents, so they get subject grades but no overall grade. Affton, St. George, Marlborough, Lakeshire, Green Park and Concord report no FBI crime data of their own. Grantwood Village isn’t graded (fewer than 1,000 residents, or not enough data). Compare Affton with a neighbor →
Short answers, built from the data on this page.
By most measures, yes. Affton grades A overall, better than 86% of U.S. towns and #25 of 247 in Missouri. It grades B+ for health and C+ for schools.
Not for the area. Louis, MO-IL metro area). Cost of living, which also weighs rents, property taxes and how many households pay 30% or more of their income for housing, grades A−.
2 notable people were born here, including John Goodman and Ed Albrecht.
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