Founding year: Wikidata. First post office: 1920.The full story ↓
History grade
What drives Fox River Grove’s History grade
On its age, its old homes and the National Register, Fox River Grove is more historic than 27% of U.S. towns, #574 of 768 in Illinois. Its share of homes from before 1940 holds the grade up; its age pulls it down.
C
HistoryA character grade: shown, never part of Fox River Grove’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 Fox River Grove’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 any two of the three inputs instead, the letter would range from D to B−. The pre-1940 share is a Census survey estimate (±9.8 points). Two sources give 1919.
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 Fox River Grove’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 Fox River Grove. Tap a year, or press play to watch the town change.
1923Barrington 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 Fox River Grove.
Long before the arrival of Europeans, Native Americans called the land within Fox River Grove home. The Ojibwe (also known as Chippewa) people continued to winter in the Fox River Valley into the 1860s. The women traded beadwork and purses with local settlers while the men trapped muskrat and mink, selling the pelts in nearby Barrington, Illinois. The area's proximity to Northwest Highway (Route 14), a major military and trade road, enabled such commerce to thrive. The men also made fence posts for local farmers and would "spear fish at night using torches attached to the ends of their birchbark canoes." When spring came, they traveled north to their summer lands in Wisconsin. Between 1816 and 1833, the Ojibwe and U.S. governments engaged in peace talks, resulting in several land cession treaties being signed. Eventually, the federal government took control of all Ojibwe land in Illinoi…
In 1919, according to Wikidata. Fox River Grove’s post office opened in 1920, and the census of 1920 counted 193 people here.
How does Fox River Grove rank for history?
Fox River Grove is more historic than 27% of U.S. towns, #574 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 Fox River Grove?
20% of Fox River Grove’s homes were built before 1940 (Census estimate, ±9.8 points), against a typical 11% for an Illinois town; the median home was built in 1980.
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 (30), Wikipedia, 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.