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Advertise here →Posen, IL · Houses & Market Data
Houses in Posen, IL (Cook County) — Census median home value $172,800, county listing prices up about 2.2% over the past year. Market data for Posen houses and the broader area.
Posen, IL is in Cook County, Illinois — this guide covers houses in Posen and the whole local market: resale homes, condos, land, and new construction. The most recent Census estimate puts the population at 5,331, with a median household income of $71,994. Census data puts Posen houses at a median value of $172,800 (all owner-occupied homes); Cook County's current median listing price runs $352,450, up about 2.2% over the past year.
Info from government sites and builders may have provided source info.
Market overview
Posen is in Cook County, Illinois. Manifest Census and county price-trend data provide baseline context for houses in Posen and the surrounding county market.
$172,800
5,331
$71,994
5.52% 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
5,331
Cook County
$71,994
$172,800
$352,450
$1,478/mo
+2.2%
Market data compiled from public sources; deemed reliable but not guaranteed; verify independently. See About
Local resources
This featured-agent spot is open for a licensed local real estate professional in Illinois.
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Advertise here →Why Posen
The Census Bureau's American Community Survey (2023 5-year estimate) puts Posen's median home value — across all owner-occupied homes, not just recent sales — at $172,800. Separately, Cook County's current median listing price (via Realtor.com data, 2026-06-01) runs $352,450. 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.
Cook County's FHFA house price index shows a 5.52% annual change in 2025.
Posen has an estimated population of 5,331 and a median household income of $71,994, per the Census Bureau's American Community Survey (2023 5-year estimate).
Posen's Census-reported median home value works out to about 2.4x the area's median household income, and median gross rent runs roughly 25% 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
County guide: Cook County — cities, market context, and local resources for the county that includes Posen.
USAHouses.com also helps visitors looking in nearby Cook 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 Dixmoor, Robbins, Blue Island, Midlothian, Markham, Harvey, Riverdale, Calumet Park, Crestwood, Phoenix, Merrionette Park, Hazel Crest, Oak Forest, Alsip, East Hazel Crest, Dolton.
More Illinois cities with market guides: Aurora, Joliet, Naperville, Rockford, Elgin, Springfield, Peoria, Waukegan.
Adjacent-county Census places with USAHouses.com pages: Frankfort Square (~9.6 mi), Arbury Hills (~10.5 mi), Mokena (~12.1 mi), Marley (~13.6 mi), Plum Valley (~13.7 mi), Willowbrook (~14.9 mi), Monee (~15.0 mi), Willowbrook (~16.3 mi), Goodenow (~16.5 mi), New Lenox (~16.8 mi), Darien (~17.3 mi), Lockport Heights (~17.4 mi), Lockport (~18.0 mi), Bonnie Brae (~18.1 mi), Clarendon Hills (~18.2 mi), Westmont (~18.7 mi).
New construction: New homes near Posen (Chicago) · Illinois new construction.
Census & home facts
5,331
$172,800
$71,994
$1,478
5.52%
$352,450
village
Cook County
1.17 sq mi
1761314
Census ACS, FHFA, and FRED figures are labeled with the year present in existing CSVs. Subject to change / confirm locally.
NewUSAHouses.com communities
Availability and pricing are controlled by the builder and may change; confirm with the builder.
Local life
City of Chicago SD 299 — 644 schools, 321,666 students enrolled, per the U.S. Department of Education's Common Core of Data. Cook addresses may be served by City of Chicago SD 299, but attendance zones vary by street — confirm assigned schools with the district before making a move.
Builders: feature your communities in front of Posen buyers — learn about advertising ↗
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Common questions
The Census Bureau's American Community Survey puts the median value of houses in Posen at $172,800. Cook County's current median listing price runs $352,450, up about 2.2% over the past year.
For owner-occupied houses in Posen, Census ACS data shows a median value of $172,800. Active listing prices in Cook County may differ — see the market snapshot above.
Posen houses include resale single-family homes, condos, mobile homes, and small multi-unit buildings, plus new construction in surrounding Cook County communities where builders are active. The housing-stock section below uses Census ACS structure counts when available for this city.
The U.S. Census Bureau's American Community Survey (2023 5-year estimate) puts Posen's population at approximately 5,331.
The Census ACS estimates median gross rent in Posen at approximately $1,478 per month.
Census ACS data puts the median household income in Posen at approximately $71,994.
Cook County's FHFA house price index shows a 5.52% annual change in 2025.
Census ACS data puts Posen's median home value at about 2.4 times the median household income, with median gross rent equal to roughly 25% 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.
Manifest and public school-directory data suggest City of Chicago SD 299 for many Posen addresses, but attendance zones vary by street — verify your assigned schools with the district before making a move.
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