Each edition grades its towns against each other only.
Photo: Boscophotos · CC BY-SA 3.04 places in town are on the National Register, among them two historic districts with 13 buildings between them. Below: maps from 1924 on and the census since 1880.
The Carrollton Township post office opened in 1822, the earliest record of the town by name. Two smaller post offices, Berdan (1869) and Pegram (1892), opened inside today’s town and later closed.
Read from the archive, the National Register and the record. The page puts what stands out first.
The first neighbors to add old photos shape how Carrollton Township’s history is told.
Two other post offices opened and closed inside today’s town.
US Post Offices dataset (Blevins & Helbock, CC0). Places and cemeteries from the USGS Geographic Names Information System (2021).
Woven from the archive, old maps, post office records, the National Register and the people born here.
Wikipedia doesn’t have a history of Carrollton Township yet. The photos, dates and memories neighbors add here are how it gets written.
Carrollton is a city in and the county seat of Greene County, Illinois, United States. The population was 2,485 as of the 2020 census.
Its first post office opened in 1822. Between the 2010 and 2020 censuses its population fell from 2,966 to 2,903 (-2%).
Intro from Wikipedia. Population: U.S. Census Bureau.
Every edition of the U.S. Geological Survey’s map of Carrollton Township. Tap a year, or press play to watch the town change.
U.S. Geological Survey historical topographic maps (public domain), via Esri’s collection of the scans. The red ring marks the center of Carrollton Township.
The country’s official list of buildings and places worth saving. Boundary changes and added documentation are counted with their listing.
National Park Service, National Register of Historic Places. Photos from Wikimedia Commons, credited on each place’s page.
Between 1,934 and 2,866 people in every census since 1880.
15 censuses, 1880–2020.
U.S. Census Bureau decennial counts, from the census table on Carrollton Township’s Wikipedia page.
Each neighbor’s History grade, on the same three inputs.
The Carrollton Township post office opened in 1822, the earliest record of the town by name (U.S. post office records).
4 listings: 1 building, among them the Hodges House (listed 1980, the first), and 2 historic districts, the Henry T. Rainey Farm and the Margaret Black Farmstead, with 13 contributing buildings. 60 historic buildings in all.
What the archives can’t tell you, neighbors can.
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 Wikimedia Commons (3), the National Register of Historic Places (3), 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.
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