Chaska’s post office opened in 1854, and 9 of its places are on the National Register
More historic than 44% of U.S. towns · #124 of 273 in Minnesota. What drives it
Most of Chaska was built recently: 2% of its homes predate 1940 and the median home dates from 1996. 9 places in town are on the National Register, among them a historic district with 28 buildings. Below: 8 old photos and papers, maps from 1885 on, and the census since 1880.
On its age, its old homes and the National Register, Chaska is more historic than 44% of U.S. towns, #124 of 273 in Minnesota. Its National Register listings hold the grade up; its share of homes from before 1940 pulls it down.
C+
HistoryA character grade: shown, never part of Chaska’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 Chaska’s 12.9 sits above most of its state (79% of Minnesota towns have fewer) while its 37 historic buildings outnumber those of 83% of U.S. towns.
How sure. Graded on any two of the three inputs instead, the letter would range from C− to B. The pre-1940 share (±1.1 points) is firm at this size. The founding year is the first post office, not a stated founding date; Wikidata’s 1891 falls in the same era, so the grade doesn’t depend on which one is used.
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 Chaska’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.
Chaska's history reflects the influence of the Native American culture. The first inhabitants are believed to be the Mound Builders, whose ancient communities are marked by mounds in City Square. Later, the Dakota (also commonly known as the Sioux) were the primary nation in this region known as the Big Woods. Although the Indian mounds located in Chaska City Square indicate the immediate area was inhabited years before 1769, the year Chaska's recorded history began.
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 Chaska post office opened in 1854, the earliest record of the town by name (U.S. post office records). Wikidata gives 1891.
How does Chaska rank for history?
Chaska is more historic than 44% of U.S. towns, #124 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 Chaska?
9 listings: 7 buildings, among them the Brinkhaus Saloon Livery Barn (listed 1980, the first), 1 historic district, the Walnut Street Historic District, with 28 contributing buildings, and 1 site. 37 historic buildings in all.
How old are the homes in Chaska?
2% of Chaska’s homes were built before 1940 (Census estimate, ±1.1 points), against a typical 8.1% for a Minnesota town; the median home was built in 1996.
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 (8), the Library of Congress (8), Wikidata (2), the National Register of Historic Places (9), 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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