St. Charles dates to 1854, and 24% of its homes were built before 1940
More historic than 74% of U.S. towns · #38 of 273 in Minnesota. What drives it
3 places in town are on the National Register, among them a historic district with 7 buildings. Below: 2 old photos and papers, maps from 1954 on, and the census since 1870.
Founding year: Wikipedia. First post office: 1855.The full story ↓
History grade
What drives St. Charles’ History grade
On its age, its old homes and the National Register, St. Charles is more historic than 74% of U.S. towns, #38 of 273 in Minnesota. Its National Register listings hold the grade up; its age pulls it down.
B+
HistoryA character grade: shown, never part of St. Charles’ overall grade.
Minnesota towns list about as much on the Register as the country (a typical Minnesota town has 2.1 per 10,000 residents, the U.S. 2.4), so St. Charles’ 22.3 sits above most of its state (85% of Minnesota towns have fewer) while its 9 historic buildings outnumber those of 75% of U.S. towns.
How sure. Graded on any two of the three inputs instead, the letter would range from B to A. The pre-1940 share is a Census survey estimate (±5.8 points). Two sources give 1854.
Founding year: Wikipedia (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 St. Charles’ past
Read from the archive, the National Register and the record. The page puts what stands out first.
St. Charles was laid out in 1854, and named for Saint Charles Borromeo (1538–1584), an Italian saint and cardinal. A post office has been in operation at St. Charles since 1855. St. Charles was incorporated in 1870.
The city was evacuated on April 17, 2009, when a large fire at North Star Foods, a poultry processing plant, threatened anhydrous ammonia tanks. Residents were allowed to return the next day.
Three properties in St. Charles are listed on the National Register of Historic Places: the 1874 Trinity Episcopal Church, the 1876 St. Charles City Bakery, and the 1890s Whitewater Avenue Commercial Historic District.
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.
In 1854, according to Wikipedia’s history of the town. St. Charles’ post office opened in 1855, and the census of 1870 counted 1,151 people here.
How does St. Charles rank for history?
St. Charles is more historic than 74% of U.S. towns, #38 of 273 in Minnesota. 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 St. Charles?
Three places: the St. Charles City Bakery (listed 1984), the Whitewater Avenue Commercial Historic District (1984) and the Trinity Episcopal Church (1984).
How old are the homes in St. Charles?
24% of St. Charles’ homes were built before 1940 (Census estimate, ±5.8 points), against a typical 8.1% for a Minnesota town; the median home was built in 1975.
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 (12), the National Register of Historic Places (3), 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) 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.