1 of Benton Township’s places is on the National Register
More historic than 40% of U.S. towns · #464 of 768 in Illinois. What drives it
Most of Benton Township was built recently: 5% of its homes predate 1940 and the median home dates from 1983. Below: 2 old photos and papers and maps from 1906 on.
On its age, its old homes and the National Register, Benton Township is more historic than 40% of U.S. towns, #464 of 768 in Illinois. Its National Register listings hold the grade up; its share of homes from before 1940 pulls it down.
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HistoryA character grade: shown, never part of Benton 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 Benton Township’s 0.5 sits near the middle of its state (61% 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 (±2.0 points) is firm at this size.
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 Benton 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 Benton Township. Tap a year, or press play to watch the town change.
1906Waukegan 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 Benton Township.
The story so far
Benton Township, in brief
Wikipedia doesn’t have a history of Benton Township yet. The photos, dates and memories neighbors add here are how it gets written.
Benton Township is a township in Lake County, Illinois, United States, and includes all of the village of Winthrop Harbor, most of the village of Beach Park, and small portions of the cities of Zion and Waukegan. As of the 2020 census, its population was 19,082. Zion Township was formed from Benton Township on September 12, 1930.
Its population held steady between the last two censuses: 18,951 in 2010, 19,082 in 2020.
Intro from Wikipedia. Population: U.S. Census Bureau.
Timeline
Benton Township, 1885 to 1918
Woven from the archive, old maps, post office records, the National Register and the people born here.
Nothing in the archives for these yearsWeddings on Main Street, storms, parades, school pictures, the old store. If it’s in your family album, it belongs here.
Benton Township is more historic than 40% of U.S. towns, #464 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 Benton Township?
5% of Benton Township’s homes were built before 1940 (Census estimate, ±2.0 points), against a typical 11% for an Illinois town; the median home was built in 1983.
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 the Library of Congress (2), 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.