Half of Grand Prairie Township’s homes were built after 1990
Most of Grand Prairie Township was built recently: 9% of its homes predate 1940 and the median home dates from 1990. Below: maps from 1943 on and the census since 2000.
Wikipedia doesn’t have a history of Grand Prairie Township yet. The photos, dates and memories neighbors add here are how it gets written.
Grand Prairie Township is one of sixteen townships in Jefferson County, Illinois, United States. As of the 2020 census, its population was 900 and it contained 389 housing units.
Its population held steady between the last two censuses: 909 in 2010, 900 in 2020.
Intro from Wikipedia. Population: U.S. Census Bureau.
Timeline
Grand Prairie Township, 1899 to 1943
Woven from the archive, old maps, post office records, the National Register and the people born here.
Every edition of the U.S. Geological Survey’s map of Grand Prairie Township. Tap a year, or press play to watch the town change.
1943Ashley sheet · 1:62,500
U.S. Geological Survey historical topographic maps (public domain), via Esri’s collection of the scans. The red ring marks the center of Grand Prairie Township.
People over time
Grand Prairie Township, census by census
Between 900 and 1,039 people in every census since 2000.
3 censuses, 2000–2020.
U.S. Census Bureau decennial counts, from the census table on Grand Prairie Township’s Wikipedia page.
Famous people
Famous people close to Grand Prairie Township
Nobody well known was born in Grand Prairie Township itself, so here are the best known from just nearby.
Lost post offices, old corners, places now gone and burying grounds
Another post office, Cravat, opened and closed inside today’s town.
Hamlets and corners on the map
Baldwin HeightsCravat
Gone or out of use
Baldridge SchoolschoolBreeze SchoolschoolClay Hill SchoolschoolCravat Oil FieldoilfieldCravat West Oil FieldoilfieldFrog Ridge SchoolschoolGold Hill SchoolschoolIrvington East Oil FieldoilfieldPleasant Hill SchoolschoolPost Oak SchoolschoolSpringer Schoolschool
4cemeteries and burying grounds inside Grand Prairie Township
FoutsGastonGileadPiskey
US Post Offices dataset (Blevins & Helbock, CC0). Places and cemeteries from the USGS Geographic Names Information System (2021).
Stories next door
History across the town line
Each neighbor’s History grade, on the same three inputs.
Founding dates: Wikidata, Wikipedia, the U.S. post office records of Blevins & Helbock (CC0) and the Census. Homes by year built: Census ACS 2020–24. National Register of Historic Places: National Park Service (list of May 22, 2026). Old photos, postcards and papers: Wikimedia Commons, the Library of Congress and other public archives, credited on each item’s page. Maps: U.S. Geological Survey historical topographic maps (via Esri) and Sanborn fire-insurance maps (Library of Congress). History text and census tables: Wikipedia (CC BY-SA 4.0). Places that used to be: USGS Geographic Names Information System (2021). How TownRatings grades history →
From U.S. Geological Survey historical maps, U.S. Census counts (via Wikipedia), the US Post Offices dataset (Blevins & Helbock) and the USGS Geographic Names Information System. Archive images are copied here with their credits and licenses, shown on each photo’s page. Refreshed monthly.