States · Illinois · Cook County

Posen, Illinois.

Typical home $202,945 (+5.9% in a year). Chicago-Naperville-Elgin, IL-IN-WI metro.

What it costs per month · Posen $1,065/mo

to buy the typical home at today's mortgage rate — +$596 (+127%) since Jan 2020.

What the home itself did
1 year
Up $11,303 +6%
$191,642$202,945 since Sep 2025
5 years
Up $44,254 +28%
$158,691$202,945 since Sep 2021

Monthly payment to buy the typical home

Home value × that month's 30-year mortgage rate, 20% down, principal and interest. This is the line households feel: prices and rates compound each other.

$500 $1,000 $1,500 $2,000 2002 2006 2010 2014 2018 2022 2026 Posen $1,065 Illinois $1,553 United States $1,922
$500 $1,000 $1,500 $2,000 2002 2010 2018 2026
  • Posen$1,065
  • Illinois$1,553
  • United States$1,922

At the last five years' pace, a typical home here doubles in price every 14 years.

Typical home values in Posen, IL rose 5.9% over the past year — faster than the nation's +1.2%.

Living in Posen, Cook County, Illinois

Posen is a village of 5,632 people in Cook County. Half its households earn more than $73,051 a year and half less, against $83,498 across Cook County. 67% of its homes are lived in by their owners and 33% are rented. Unemployment in Cook County was 5.9% in August 2026, and the county had 1.1% more jobs in 2025 than the year before. The most people in Cook County work in schools and health care, then professional services.

People 5,632 in the 2020 census; median age 33.1
Household income $73,051 the median, give or take $13,807 · Cook County: $83,498
Unemployment 5.9% Cook County, August 2026; 4.7% a year before
Homes 67% lived in by their owners; 33% rented

Written by AI Claude Sonnet 5.5 wrote this on 23 October 2026 from the figures here, a list of nearby places and what it knows. It can be wrong or out of date.

What it’s like

The place. Posen is a village in Cook County, home to a young community, with residents who are younger than in much of the country. Most homes are lived in by their owners, and typical home values and household incomes both sit below the county's. Winters are cold, with January the coldest month and plenty of snow, while July is warm, and rain and melted snow fall steadily across the year.

Work. Residents work mostly in schools, hospitals and social care, with professional and business services, manufacturing and retail also employing many. Few adults hold a four-year degree, and very few work from home, so most people travel to a job, with a commute that is fairly typical. In the village itself, the largest workplaces include Illinois Central School Bus, Posen-Robbins ESD Schools and Gremp Steel Company.

Things to do. Chicago's well-known places are a longer drive away. The Art Institute of Chicago is a museum, and Millennium Park is a garden in the heart of the city. Soldier Field is a stadium for those who like to catch a game.

Report a mistake
  • 1,512households
  • 12%of adults have a degree
  • 24 mintypical commute
  • 2%work from home

What people in Cook County work in

  • Schools, hospitals and social care24%
  • Professional and business services16%
  • Manufacturing9%
  • Shops (retail)9%
  • Restaurants, hotels and entertainment8%
  • Banks, insurance and property8%

Employed residents by industry, from the Census survey. Cook County had 2,594,810 jobs in 2025, 1.1% more than the year before (Bureau of Labor Statistics).

Weather through the year

Average daily high and low for each month: coldest in January, 33° and 20°; warmest in July, 85° and 68° 20° 40° 60° 80° J 33° 20° F M A M J J 85° 68° A S O N D
Average daily high and low for each month: coldest in January, 33° and 20°; warmest in July, 85° and 68° 20° 40° 60° 80° J 33° 20° F M A M J J 85° 68° A S O N D

Coldest in January, with highs near 33° and lows near 20°; warmest in July, with highs near 85° and lows near 68°. About 39 inches of snow and 41 inches of rain and melted snow a year.

Average daily high and low, 1991–2020, at the Chicago Midway Airport 3SW weather station, 9 miles away (NOAA).

Largest workplaces in Posen

  1. Illinois Central School BusSchool and employee bus transportation283
  2. Posen-Robbins ESD 143-5School district174FTE
  3. Gremp Steel CompanyFabricated structural metal manufacturing25
  4. ABM IndustriesService to buildings and dwellings21

Staff on average in 2025, as each workplace reported it to OSHA with its injury records: 3 workplaces with 20 or more staff, 329 people in all. School districts come from the Common Core of Data (NCES, 2023–24); FTE marks full-time equivalent staff. Not listed: many offices and banks, which need not report to OSHA; military bases, whose staff OPM withholds; and, in about half the states, city and county governments.

Natural hazards

  1. Inland floodingVery high
  2. Cold wavesVery high
  3. TornadoesVery high
  4. Heat wavesRelatively high
  5. Winter weatherRelatively moderate

FEMA’s National Risk Index (December 2025) rates the risk each natural hazard poses to the people, buildings and farms in Posen’s census tracts, against the rest of the country; all of them together, relatively high. It is meant for planning, not a substitute for a local risk assessment or a flood map: FEMA’s index.

From the U.S. Census Bureau’s 2020 census and its American Community Survey (2020–2024 five-year estimates), and the Bureau of Labor Statistics. A survey, so each figure has a margin of error, and figures it is not sure of are left out. More on Cook County and the Chicago-Naperville-Elgin, IL-IN-WI metro.

Posen home values

Zillow measures a city over its municipal boundary. Against the state and national figures, mid-tier homes, smoothed and seasonally adjusted.

$100,000 $200,000 $300,000 2018 2020 2022 2024 2026 Posen $202,945 Illinois $295,943 United States $366,157
$100,000 $200,000 $300,000 2018 2022 2026
  • Posen$202,945
  • Illinois$295,943
  • United States$366,157

When this market ran hot

Each cell is that month's year-on-year home-value growth. Read left to right, top row is the latest year — the 2021–22 band is the boom.

JFMAMJJASOND
2026
2025
2024
2023
2022
2021
2020
2019
2018
falling flat warming hot overheating runaway

Market heat, inside the city limits

Homes for sale

Active for-sale inventory. More supply hands power to buyers.

6 8 10 12 2024 2025 2026 Posen 8
6 8 10 12 2024 2025 2026
  • Posen8

Zip codes with a Posen address

A different geography, not a breakdown. The figure above covers the municipality; these zips cover everywhere the Post Office calls Posen — often including townships beyond the city limits. Both come straight from Zillow, and they are not expected to average out.

Zip codes in Posen