Willmar’s post office opened in 1869, and 16% of its homes were built before 1940
More historic than 66% of U.S. towns · #54 of 273 in Minnesota. What drives it
7 places in town are on the National Register, among them a historic district with 22 buildings. Below: 8 old photos and papers, maps from 1893 on, and the census since 1880.
Founding year: the first Willmar post office (Blevins & Helbock, CC0).The full story ↓
History grade
What drives Willmar’s History grade
On its age, its old homes and the National Register, Willmar is more historic than 66% of U.S. towns, #54 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 Willmar’s 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 Willmar’s 13.6 sits above most of its state (80% of Minnesota towns have fewer) while its 29 historic buildings outnumber those of 81% of U.S. towns.
How sure. Graded on any two of the three inputs instead, the letter would range from C+ to A−. The pre-1940 share is a Census survey estimate (±3.1 points). The founding year is the first post office, not a stated founding date.
Founding year: the first post office (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 Willmar’s past
Read from the archive, the National Register and the record. The page puts what stands out first.
Fire insurance maps drew every building, what it was made of and what it was used for, so insurers could price the risk of fire. Pick a year, then a sheet.
Agricultural expansion and Willmar's establishment as a division point on the Great Northern Railway determined its growth. The first settlers arrived during the 1850s, attracted to the fertile land and abundant timber and game. The Dakota War of 1862 left the township abandoned for several years. The advent of the railroad in Kandiyohi County in 1869 brought new settlers. Many were of Swedish and Norwegian origin; residents of Scandinavian heritage are still a majority. In 1870, Leon (Chadwick) Willmar, a Belgian acting as an agent for the European bondholder of the Saint Paul and Pacific Railroad, bought the title to Section 1 of Willmar Township. Willmar was established as the county seat in 1871 and was incorporated as a village in 1874 and as a city in 1901.
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.
The Willmar post office opened in 1869, the earliest record of the town by name (U.S. post office records).
How does Willmar rank for history?
Willmar is more historic than 66% of U.S. towns, #54 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 Willmar?
7 listings: 5 buildings, 1 historic district, the Willmar Hospital Farm for Inebriates Historic District, with 22 contributing buildings, and 1 site. 29 historic buildings in all.
How old are the homes in Willmar?
16% of Willmar’s homes were built before 1940 (Census estimate, ±3.1 points), against a typical 8.1% for a Minnesota town; the median home was built in 1978.
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 (7), the Library of Congress (5), the National Register of Historic Places (7), 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 Sanborn fire insurance maps (Library of Congress). Archive images are copied here with their credits and licenses, shown on each photo’s page. Refreshed monthly.
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1939
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