Gerlaw, Illinois.
Typical home $208,456 (+3.4% in a year).
to buy the typical home at today's mortgage rate — +$365 (+50%) since Feb 2022.
- 1 year
- Up $6,873 +3%
- $201,582$208,456 since Sep 2025
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.
- Gerlaw$1,094
- Illinois$1,553
- United States$1,922
Typical home values in Gerlaw, IL rose 3.4% over the past year — faster than the nation's +1.2%.
Living in Gerlaw, Warren County, Illinois
The Census does not count Gerlaw on its own, so the figures here are Warren County's. Half the county's households earn more than $67,385 a year and half less; 15% of the county's people live below the poverty line. 75% of the county's homes are lived in by their owners and 25% are rented. Unemployment in Warren County was 3.6% in August 2026, and the county had 0.3% fewer jobs in 2025 than the year before. The most people in Warren County work in schools and health care, then manufacturing.
Written by AI Claude Haiku 5.5 wrote this on 22 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 It can be wrong or out of date.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. Gerlaw is a town in Warren County, in western Illinois. Across the county, most homes are lived in by their owners, and the typical resident is of working age. Winters are cold and snowy, summers are warm, and rain and melted snow fall steadily through the year.
Work. Many residents work in schools, hospitals and social care, or in manufacturing. Shops, transport, warehouses and utilities also employ a good share of people across Warren County. Few people work from home, so most commute out to a workplace each day.
Things to do. The Alexis Opera House, a theatre a short drive away, is the closest place to see a live show. For history, the Carl Sandburg State Historic Site is a museum a longer drive off, and Big River State Forest, a protected area, offers wider open country for walks.
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- 6,787households
- 38.5median age
- 22%of adults have a degree
- 15%below the poverty line
- 19 mintypical commute
- 7%work from home
What people in Warren County work in
Employed residents by industry, from the Census survey. Warren County had 6,346 jobs in 2025, 0.3% fewer than the year before (Bureau of Labor Statistics).
Weather through the year
Coldest in January, with highs near 31° and lows near 15°; warmest in July, with highs near 84° and lows near 64°. About 26 inches of snow and 39 inches of rain and melted snow a year.
Average daily high and low, 1991–2020, at the Monmouth weather station, 5 miles away (NOAA).
Largest workplaces in Warren County
- Smithfield Monmouth Fresh MeatsPork carcasses, half carcasses, and primal and sub-primal cuts produced in slaughtering plants1,547
- Monmouth-Roseville CUSD 238School district261FTE
- Monmouth CollegeUniversity or college227
- Midwestern Pet Foods, Inc. - MonmouthAnimal feeds, prepared, dog and cat, manufacturing163
- United CUSD 304School district121FTE
- Fusion Tech IntegratedPlate work, fabricated metal, manufacturing105
- OSF Holy Family MED CTRCritical access hospital105FTE
- Industrial Trade ServicesManpower pools84
Staff on average in 2025, as each workplace reported it to OSHA with its injury records: 21 workplaces with 20 or more staff, 2,799 people in all. School districts come from the Common Core of Data (NCES, 2023–24), colleges from IPEDS (NCES, 2023–24) and hospitals from their Medicare cost reports (CMS, 2023); 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
- DroughtRelatively moderate
FEMA’s National Risk Index (December 2025) rates the risk each natural hazard poses to the people, buildings and farms across Warren County, against the rest of the country; all of them together, very low. 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 Warren County.
Gerlaw home values
Zillow measures a city over its municipal boundary. Against the state and national figures, mid-tier homes, smoothed and seasonally adjusted.
- Gerlaw$208,456
- 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.
Zip codes with a Gerlaw address
A different geography, not a breakdown. The figure above covers the municipality; these zips cover everywhere the Post Office calls Gerlaw — often including townships beyond the city limits. Both come straight from Zillow, and they are not expected to average out.