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Advertise here →Johnston City, IL · Houses & Market Data
Johnston City, Illinois houses and real estate market data.
Houses in Johnston City, IL (Williamson County) — Census median home value $84,500, county listing prices down about 8.0% over the past year. Market data for Johnston City houses and the broader area.
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Johnston City, IL is in Williamson County, Illinois — this guide covers houses in Johnston City and the whole local market: resale homes, condos, land, and new construction. The most recent Census estimate puts the population at 3,351, with a median household income of $46,629. Census data puts Johnston City houses at a median value of $84,500 (all owner-occupied homes); Williamson County's current median listing price runs $200,000, down about 8.0% over the past year.
Info from government sites and builders may have provided source info.
Market overview
Johnston City housing market
Johnston City is in Williamson County, Illinois. Manifest Census and county price-trend data provide baseline context for houses in Johnston City and the surrounding county market.
Median home value (Census ACS)
$84,500
Population (Census ACS)
3,351
Median household income
$46,629
County price trend (2025)
5.04% 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
Johnston City market snapshot
Population
3,351
County
Williamson County
Median Household Income
$46,629
Median Home Value (city)
$84,500
Median Listing Price (Williamson County)
$200,000
Median Gross Rent
$830/mo
Price Trend (YoY)
-8.0%
Market data compiled from public sources; deemed reliable but not guaranteed; verify independently. See About
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What makes Johnston City different
Home Value, By Source
The Census Bureau's American Community Survey (2023 5-year estimate) puts Johnston City's median home value — across all owner-occupied homes, not just recent sales — at $84,500. Separately, Williamson County's current median listing price (via Realtor.com data, 2026-06-01) runs $200,000. 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
Williamson County's FHFA house price index shows a 5.04% annual change in 2025.
Population & Income
Johnston City has an estimated population of 3,351 and a median household income of $46,629, per the Census Bureau's American Community Survey (2023 5-year estimate).
Affordability Snapshot
Johnston City's Census-reported median home value works out to about 1.8x the area's median household income, and median gross rent runs roughly 21% 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 Johnston City
County guide: Williamson County — cities, market context, and local resources for the county that includes Johnston City.
USAHouses.com also helps visitors looking in nearby Williamson County and other Illinois communities. Some locations may not yet have dedicated pages, but many licensed professionals in this region assist surrounding communities.
Nearby communities include Whiteash, Spillertown, Pittsburg, Herrin, Marion, Energy, Colp, Crainville, Crab Orchard, Carterville, Blairsville, Cambria, Bush, Hurst, Creal Springs.
Whiteash market data
Nearby city · ~2.6 mi
Spillertown market data
Nearby city · ~3.9 mi
Pittsburg market data
Nearby city · ~5.3 mi
Herrin market data
Nearby city · ~5.8 mi
Marion market data
Nearby city · ~6.0 mi
Energy market data
Nearby city · ~6.2 mi
Colp market data
Nearby city · ~8.2 mi
Crainville market data
Nearby city · ~8.5 mi
Crab Orchard market data
Nearby city · ~9.4 mi
Carterville market data
Nearby city · ~9.4 mi
Blairsville market data
Nearby city · ~10.6 mi
Cambria market data
Nearby city · ~10.8 mi
Bush market data
Nearby city · ~11.0 mi
Hurst market data
Nearby city · ~11.9 mi
Creal Springs market data
Nearby city · ~14.8 mi
More Illinois cities with market guides: Aurora, Joliet, Naperville, Rockford, Elgin, Springfield, Peoria, Waukegan.
Aurora market data
Same-state city guide
Joliet market data
Same-state city guide
Naperville market data
Same-state city guide
Rockford market data
Same-state city guide
Elgin market data
Same-state city guide
Springfield market data
Same-state city guide
Peoria market data
Same-state city guide
Waukegan market data
Same-state city guide
Adjacent-county Census places with USAHouses.com pages: Freeman Spur (~4.7 mi), West Frankfort (~5.4 mi), Orient (~7.2 mi), Zeigler (~8.9 mi), Hanaford (~10.7 mi), Royalton (~10.8 mi), Thompsonville (~10.9 mi), Buckner (~12.0 mi), West City (~12.1 mi), Christopher (~12.4 mi), Benton (~13.3 mi), North City (~13.9 mi), Mulkeytown (~14.4 mi), Valier (~15.0 mi), De Soto (~16.3 mi), Galatia (~17.1 mi).
New construction: New homes near Johnston City (Chicago) · Illinois new construction.
Census & home facts
Johnston City data from published sources
Population (ACS 2023)
3,351
Median home value (ACS 2023)
$84,500
Median household income (ACS 2023)
$46,629
Median gross rent (ACS 2023)
$830
County FHFA annual change (2025)
5.04%
County median listing price (FRED/Realtor.com) (2026-06-01)
$200,000
Census place type
city
County
Williamson County
Land area (Census Gazetteer 2024)
2.12 sq mi
Census GEOID
1738544
Census ACS, FHFA, and FRED figures are labeled with the year present in existing CSVs. Subject to change / confirm locally.
NewUSAHouses.com communities
Closest verified new-home communities near Johnston City
Availability and pricing are controlled by the builder and may change; confirm with the builder.
Coulterville Court ↗
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Arapaho Village ↗
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Waterford Pointe ↗
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Grandin Pointe ↗
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Circle Point ↗
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Local life
Life in Johnston City
Schools
Marion CUSD 2 — 7 schools, 3,749 students enrolled, per the U.S. Department of Education's Common Core of Data. Williamson addresses may be served by Marion CUSD 2, but attendance zones vary by street — confirm assigned schools with the district before making a move.
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Common questions
Johnston City FAQ
What are houses worth in Johnston City, IL?
The Census Bureau's American Community Survey puts the median value of houses in Johnston City at $84,500. Williamson County's current median listing price runs $200,000, down about 8.0% over the past year.
How much do houses cost in Johnston City, IL?
For owner-occupied houses in Johnston City, Census ACS data shows a median value of $84,500. Active listing prices in Williamson County may differ — see the market snapshot above.
What types of houses are in Johnston City, IL?
Johnston City houses include resale single-family homes, condos, mobile homes, and small multi-unit buildings, plus new construction in surrounding Williamson 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 Johnston City, IL?
The U.S. Census Bureau's American Community Survey (2023 5-year estimate) puts Johnston City's population at approximately 3,351.
What's the median rent in Johnston City, IL?
The Census ACS estimates median gross rent in Johnston City at approximately $830 per month.
What is the median household income in Johnston City, IL?
Census ACS data puts the median household income in Johnston City at approximately $46,629.
Is the Johnston City housing market growing?
Williamson County's FHFA house price index shows a 5.04% annual change in 2025.
Is Johnston City, IL affordable relative to income?
Census ACS data puts Johnston City's median home value at about 1.8 times the median household income, with median gross rent equal to roughly 21% 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 Johnston City, IL?
Manifest and public school-directory data suggest Marion CUSD 2 for many Johnston City addresses, but attendance zones vary by street — verify your assigned schools with the district before making a move.
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