St. Clair, MO · Houses & Market Data

St. Clair, Missouri houses and real estate market data.

Houses in St. Clair, MO (Franklin County) — Census median home value $134,100, county listing prices up about 10.0% over the past year. Market data for St. Clair houses and the broader area.

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St. Clair, MO is in Franklin County, Missouri — this guide covers houses in St. Clair and the whole local market: resale homes, condos, land, and new construction. The most recent Census estimate puts the population at 4,767, with a median household income of $40,933. Census data puts St. Clair houses at a median value of $134,100 (all owner-occupied homes); Franklin County's current median listing price runs $326,250, up about 10.0% over the past year.

Info from government sites and builders may have provided source info.

Market overview

St. Clair housing market

St. Clair is in Franklin County, Missouri. Manifest Census and county price-trend data provide baseline context for houses in St. Clair and the surrounding county market.

Median home value (Census ACS)

$134,100

Population (Census ACS)

4,767

Median household income

$40,933

County price trend (2025)

6.3% YoY

Population, income, and median home value from the project batch manifest (Census ACS 2023 5-year). County price trend from FHFA county HPI when present in the manifest row.

At a glance

St. Clair market snapshot

Population

4,767

County

Franklin County

Median Household Income

$40,933

Median Home Value (city)

$134,100

Median Listing Price (Franklin County)

$326,250

Median Gross Rent

$874/mo

Price Trend (YoY)

+10.0%

Market data compiled from public sources; deemed reliable but not guaranteed; verify independently. See About

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Why St. Clair

What makes St. Clair different

Home Value, By Source

The Census Bureau's American Community Survey (2023 5-year estimate) puts St. Clair's median home value — across all owner-occupied homes, not just recent sales — at $134,100. Separately, Franklin County's current median listing price (via Realtor.com data, 2026-06-01) runs $326,250. These cover different geography (city vs. county) and different measures (assessed value vs. active listings), which is why we show both rather than picking one — full source list on our data sources page.

County Price Trend

Franklin County's FHFA house price index shows a 6.3% annual change in 2025.

Population & Income

St. Clair has an estimated population of 4,767 and a median household income of $40,933, per the Census Bureau's American Community Survey (2023 5-year estimate).

Affordability Snapshot

St. Clair's Census-reported median home value works out to about 3.3x the area's median household income, and median gross rent runs roughly 26% of that same income on an annualized basis. Housing economists commonly flag a price-to-income ratio above 4x as historically elevated -- useful context, not a personal affordability verdict.

Nearby

Places around St. Clair

County guide: Franklin County — cities, market context, and local resources for the county that includes St. Clair.

USAHouses.com also helps visitors looking in nearby Franklin County and other Missouri communities. Some locations may not yet have dedicated pages, but many licensed professionals in this region assist surrounding communities.

Nearby communities include Parkway, Lake St. Clair, Union, Charmwood, Stanton, Miramiguoa Park, Villa Ridge, Oak Grove Village, Leslie, Gray Summit, Washington, Pacific, Gerald, New Haven, Berger.

More Missouri cities with market guides: St. Louis, Springfield, Columbia, Independence, Lee's Summit, O'Fallon, St. Joseph, St. Charles.

Adjacent-county Census places with USAHouses.com pages: Sullivan (~13.1 mi), West Sullivan (~15.2 mi), Three Creeks (~15.6 mi), Lake Tekakwitha (~16.3 mi), St. Cloud (~16.9 mi), LaBarque Creek (~17.7 mi), Cedar Hill Lakes (~18.2 mi), Cedar Hill (~19.1 mi), Bourbon (~19.4 mi), Marthasville (~20.0 mi), Eureka (~21.6 mi), Scotsdale (~22.1 mi), Raintree Plantation (~22.1 mi), Rosebud (~22.3 mi), Byrnes Mill (~23.6 mi), Leasburg (~23.9 mi).

New construction: New homes near St. Clair (Kansas City) · New homes near St. Clair (St Louis) · Missouri new construction.

Census & home facts

St. Clair data from published sources

Population (ACS 2023)

4,767

Median home value (ACS 2023)

$134,100

Median household income (ACS 2023)

$40,933

Median gross rent (ACS 2023)

$874

County FHFA annual change (2025)

6.3%

County median listing price (FRED/Realtor.com) (2026-06-01)

$326,250

Census place type

city

County

Franklin County

Land area (Census Gazetteer 2024)

4.82 sq mi

Census GEOID

2964136

Census ACS, FHFA, and FRED figures are labeled with the year present in existing CSVs. Subject to change / confirm locally.

Local life

Life in St. Clair

Schools

WASHINGTON — 11 schools, 3,720 students enrolled, per the U.S. Department of Education's Common Core of Data. Franklin addresses may be served by WASHINGTON, but attendance zones vary by street — confirm assigned schools with the district before making a move.

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Common questions

St. Clair FAQ

What are houses worth in St. Clair, MO?

The Census Bureau's American Community Survey puts the median value of houses in St. Clair at $134,100. Franklin County's current median listing price runs $326,250, up about 10.0% over the past year.

How much do houses cost in St. Clair, MO?

For owner-occupied houses in St. Clair, Census ACS data shows a median value of $134,100. Active listing prices in Franklin County may differ — see the market snapshot above.

What types of houses are in St. Clair, MO?

St. Clair houses include resale single-family homes, condos, mobile homes, and small multi-unit buildings, plus new construction in surrounding Franklin County communities where builders are active. The housing-stock section below uses Census ACS structure counts when available for this city.

What is the population of St. Clair, MO?

The U.S. Census Bureau's American Community Survey (2023 5-year estimate) puts St. Clair's population at approximately 4,767.

What's the median rent in St. Clair, MO?

The Census ACS estimates median gross rent in St. Clair at approximately $874 per month.

What is the median household income in St. Clair, MO?

Census ACS data puts the median household income in St. Clair at approximately $40,933.

Is the St. Clair housing market growing?

Franklin County's FHFA house price index shows a 6.3% annual change in 2025.

Is St. Clair, MO affordable relative to income?

Census ACS data puts St. Clair's median home value at about 3.3 times the median household income, with median gross rent equal to roughly 26% of that income annually. This is a general benchmark, not a personal pre-qualification -- your own income, debt, and down payment determine what you can actually afford.

What school district serves St. Clair, MO?

Manifest and public school-directory data suggest WASHINGTON for many St. Clair addresses, but attendance zones vary by street — verify your assigned schools with the district before making a move.

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