Grantfork, Illinois.
Typical home $196,373 (+1.7% in a year). St. Louis, MO-IL metro.
to buy the typical home at today's mortgage rate — +$549 (+114%) since Jan 2020.
- 1 year
- Up $3,325 +2%
- $193,048$196,373 since Sep 2025
- 5 years
- Up $42,941 +28%
- $153,432$196,373 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.
- Grantfork$1,031
- 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 Grantfork, IL rose 1.7% over the past year — faster than the nation's +1.2%.
Living in Grantfork, Madison County, Illinois
Grantfork is a village of 341 people in Madison County. 98% of its homes are lived in by their owners and 2% are rented. Unemployment in Madison County was 3.5% in August 2026, and the county had 2.2% more jobs in 2025 than the year before. The most people in Madison County work in schools and health care, then shops.
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 It can be wrong or out of date.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. Grantfork is a very small village in Madison County, Illinois, and almost everyone who lives here owns their home. Homes here cost less than the typical home across much of the country, and household incomes in the county run a little below those in many other places. Winters are cold, with January the coldest month and freezing nights common, while July is hot, and the year brings a fair amount of rain and melted snow.
Work. Residents work mostly in schools, hospitals and social care, with others in shops, manufacturing, and professional and business services. Across Madison County, some of the largest workplaces are Southern Illinois University-Edwardsville, World Wide Technology and the Edwardsville school district. The county had somewhat more jobs last year than the year before, and unemployment there is lower than it was a year ago. A typical commute is a moderate drive.
Things to do. Carlyle Lake is a large reservoir a longer drive away, suited to a day by the water. Cahokia, one of the best known archaeological sites in the region, is also a longer drive away and worth a visit for anyone curious about the area's early history. The Gardens at SIUE, a botanical garden, is another longer drive away and a quieter place to spend an afternoon.
Report a mistake
- 25 mintypical commute
What people in Madison County work in
Employed residents by industry, from the Census survey. Madison County had 107,517 jobs in 2025, 2.2% more than the year before (Bureau of Labor Statistics).
Weather through the year
Coldest in January, with highs near 39° and lows near 22°; warmest in July, with highs near 88° and lows near 68°. About 46 inches of rain and melted snow a year.
Average daily high and low, 1991–2020, at the Carlyle Rsvr weather station, 22 miles away (NOAA).
Largest workplaces in Madison County
- Southern Illinois University-EdwardsvilleUniversity or college2,233
- World Wide TechnologySoftware, computer, packaged, merchant wholesalers1,373
- Help At HomeHomemaker's service for elderly or disabled persons, non-medical1,275
- J.F. ElectricElectrical contractors1,200
- Edwardsville CUSD 7School district1,030FTE
- Anderson HospitalGeneral hospital854FTE
- Collinsville CUSD 10School district844FTE
- Phillips 66 - Wood River RefineryCrude oil refining834
Staff on average in 2025, as each workplace reported it to OSHA with its injury records: 277 workplaces with 20 or more staff, 39,988 people in all across the county; Grantfork has none of its own. Colleges come from IPEDS (NCES, 2023–24), school districts from the Common Core of Data (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
- Heat wavesRelatively high
- TornadoesRelatively high
- Cold wavesRelatively high
- HailRelatively high
- Inland floodingRelatively high
- LightningRelatively high
FEMA’s National Risk Index (December 2025) rates the risk each natural hazard poses to the people, buildings and farms in Grantfork’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 Madison County and the St. Louis, MO-IL metro.
Grantfork home values
Zillow measures a city over its municipal boundary. Against the state and national figures, mid-tier homes, smoothed and seasonally adjusted.
- Grantfork$196,373
- 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 Grantfork address
A different geography, not a breakdown. The figure above covers the municipality; these zips cover everywhere the Post Office calls Grantfork — often including townships beyond the city limits. Both come straight from Zillow, and they are not expected to average out.
Zillow publishes no zip-level series with this city on the address.