On its age, its old homes and the National Register, Johnsburg is more historic than 36% of U.S. towns, #494 of 768 in Illinois. Its share of homes from before 1940 holds the grade up; its National Register listings pull it down.
C+
HistoryA character grade: shown, never part of Johnsburg’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 Johnsburg’s 0.0 sits below most of its state (28% of Illinois towns have fewer) while its 0 listings outnumber those of 23% 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 (±5.7 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 Johnsburg’s past
Read from the archive, the National Register and the record. The page puts what stands out first.
The area that came to be known as Johnsburg was first settled in 1841, five years after the founding of McHenry County, by immigrant families escaping religious persecution and oppressive social conditions in the Eifel region of Germany, predominantly the Mayen-Koblenz." (The congregation is known today as St. John the Baptist.) They built their first church in 1842, a simple log cabin that also functioned as a school and meeting hall. The first priest to serve this new congregation was delivered there by friendly Native Americans who found him lost in the woods of Wisconsin. The church served the community until 1850, when a larger frame church was built to replace it. Construction on a third church, built in the Gothic style, began in 1867. This church took thirteen years to complete and was the pride of the Johnsburg community until it was destroyed by a fire on February 19, 1900. Ma…
Passages that mention Johnsburg, cut from the printed page as they were published.
History of McHenry County, Illinois1922 · page 336Read the page →
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Johnsburg was platted in section 13, township 43, range 8, by a company of men, the work of surveying being executed on June 4, 5, 6, 1868.
Text read by machine from the scan; it may contain errors.
History of McHenry County, Illinois1885 · page 789Read the page →
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the sole inhabitants of the place still. It was named in honor of one of their number who assumed the position of leader or director of the little settlement; the Christian name of this personage being John, the place was subsequently called Johnsburg. As will be seen by the business directory of the place, it is quite a trading point, though seldom patronized by Americans.
Text read by machine from the scan; it may contain errors.
Scans and text from the Internet Archive. Books published in 1930 or earlier, which are in the public domain.
Timeline
Johnsburg, 1863 to 1991
Woven from the archive, old maps, post office records, the National Register and the people born here.
Johnsburg is more historic than 36% of U.S. towns, #494 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 Johnsburg?
14% of Johnsburg’s homes were built before 1940 (Census estimate, ±5.7 points), against a typical 11% for an Illinois town; the median home was built in 1982.
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 Wikipedia, Wikidata and Wikipedia for famous people, U.S. Geological Survey historical maps, U.S. Census counts (via Wikipedia), the US Post Offices dataset (Blevins & Helbock), the USGS Geographic Names Information System and old county and town histories (Internet Archive). Archive images are copied here with their credits and licenses, shown on each photo’s page. Refreshed monthly.
