On its age, its old homes and the National Register, Logan Township is more historic than 72% of U.S. towns, #244 of 768 in Illinois. All 2 inputs are above most U.S. towns; its share of homes from before 1940 ranks highest and its National Register listings lowest.
B+
HistoryA character grade: shown, never part of Logan 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 Logan Township’s 3.1 sits above most of its state (71% of Illinois towns have fewer) while its 1 listings outnumber those of 51% of U.S. towns.
How sure. Graded on two of the three inputs, so a change in either one moves the letter more than it would with three. The pre-1940 share is a Census survey estimate (±8.7 points).
Founding year: our sources. 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 Logan Township’s past
Read from the archive, the National Register and the record. The page puts what stands out first.
Lost post offices, old corners, places now gone and burying grounds
Three other post offices opened and closed inside today’s town.
Smithville
1847–1901
Harker's Corners
1863–1900
Eden
1882–1962
18401930today
Hamlets and corners on the map
EdenSmithville
Gone or out of use
Cherry Fork SchoolschoolHanna City Air Force StationmilitaryHarkers Corners SchoolschoolPatton SchoolschoolPinkerton SchoolschoolPleasant Grove SchoolschoolSalem Schoolschool
3cemeteries and burying grounds inside Logan Township
Harker's CornerPleasant GroveSmithville
US Post Offices dataset (Blevins & Helbock, CC0). Places and cemeteries from the USGS Geographic Names Information System (2021).
The story so far
Logan Township, in brief
Wikipedia doesn’t have a history of Logan Township yet. The photos, dates and memories neighbors add here are how it gets written.
Logan Township is located in Peoria County, Illinois. As of the 2010 census, its population was 3,192 and it contained 1,390 housing units. It contains the census-designated place of Smithville.
Its population held steady between the last two censuses: 3,192 in 2010, 3,245 in 2020.
Intro from Wikipedia. Population: U.S. Census Bureau.
Timeline
Logan Township, 1847 to 1962
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 Logan Township. Tap a year, or press play to watch the town change.
1930Glasford 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 Logan Township.
On the National Register
1 historic place in Logan Township
The country’s official list of buildings and places worth saving.
Logan Township is more historic than 72% of U.S. towns, #244 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.
What is on the National Register in Logan Township?
One place: the Pleasant Grove School (listed 1994).
How old are the homes in Logan Township?
18% of Logan Township’s homes were built before 1940 (Census estimate, ±8.7 points), against a typical 11% for an Illinois town; the median home was built in 1972.
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 Wikimedia Commons (2), Wikidata (1), the National Register of Historic Places (1), U.S. Geological Survey historical maps, 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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