On its age, its old homes and the National Register, Sugar Creek Township is more historic than 48% of U.S. towns, #412 of 768 in Illinois. Its National Register listings hold the grade up; its age pulls it down.
B−
HistoryA character grade: shown, never part of Sugar Creek Township’s overall grade.
Few Illinois towns list much on the Register (a typical Illinois town has 0.5 per 10,000 residents, the U.S. 2.4), so Sugar Creek Township’s 1.5 sits near the middle of its state (65% of Illinois towns have fewer) while its 1 listings outnumber those of 51% of U.S. towns.
NoteThe founding year comes from Wikidata alone; no second source gives 1873.
How sure. Graded on any two of the three inputs instead, the letter would range from C+ to B. The pre-1940 share is a Census survey estimate (±3.5 points).
Founding year: Wikidata (other dates in Quick answers). Homes: Census ACS 2020–24. National Register: National Park Service, May 2026 list; each listing counted once (boundary changes and added documentation belong to their listing), and a historic district counts its contributing buildings. How TownRatings grades history →
What stands out about Sugar Creek Township’s past
Read from the archive, the National Register and the record. The page puts what stands out first.
Every edition of the U.S. Geological Survey’s map of Sugar Creek Township. Tap a year, or press play to watch the town change.
1906Breese 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 Sugar Creek Township.
The story so far
Sugar Creek Township, in brief
Wikipedia doesn’t have a history of Sugar Creek Township yet. The photos, dates and memories neighbors add here are how it gets written.
Sugar Creek Township is one of fifteen townships in Clinton County, Illinois, United States. As of the 2020 census, its population was 6,643 and it contained 2,720 housing units. The township's name changed from Trenton Township on June 1, 1874.
Sugar Creek Township was established in 1873. Between the 2010 and 2020 censuses its population grew from 6,184 to 6,643 (+7%).
Intro from Wikipedia. Population: U.S. Census Bureau.
By decade
No old photos in the archives yet
Weddings on Main Street, storms, parades, school pictures, the old store. If it’s in your family album, it belongs here.
Be the first to add onePhotograph a print flat, in daylight, no flash.
In 1873, according to Wikidata. Sugar Creek Township’s post office opened in 1836.
How does Sugar Creek Township rank for history?
Sugar Creek Township is more historic than 48% of U.S. towns, #412 of 768 in Illinois. The History grade combines the town’s founding era, the share of homes built before 1940 and its National Register listings. It’s a character grade, so it isn’t part of the overall grade. How it works.
How old are the homes in Sugar Creek Township?
11% of Sugar Creek Township’s homes were built before 1940 (Census estimate, ±3.5 points), against a typical 11% for an Illinois town; the median home was built in 1984.
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).
From U.S. Geological Survey historical maps 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.
