Founding year: Wikidata; Wikipedia’s history section gives the same year. First post office: 1877.The full story ↓
History grade
What drives Cavalier’s History grade
On its age, its old homes and the National Register, Cavalier is more historic than 54% of U.S. towns. Its National Register listings hold the grade up; its age pulls it down.
B−
HistoryA character grade: shown, never part of Cavalier’s overall grade.
North Dakota towns list about as much on the Register as the country (a typical North Dakota town has 2.8 per 10,000 residents, the U.S. 2.4), so Cavalier’s 14.0 sits above most of its state (66% of North Dakota towns have fewer) while its 2 historic buildings outnumber those of 60% 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 is a Census survey estimate (±5.1 points). Two sources give 1875.
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 Cavalier’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.
Cavalier was laid out in 1875 on open land. The city was named for Charles Cavileer, an early settler in Pembina County (a recording error accounts for the error in spelling, which was never corrected). A post office has been in operation at Cavalier since 1877. Cavalier was incorporated in 1902.
In the early 1970s, the city of Cavalier's population quadrupled in size due to the U.S.' anti-ballistic missile program. This was in preparation of a nuclear attack on the U.S. during the Cold War with the Soviet Union.
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 1875, according to Wikidata and Wikipedia’s history of the town. Cavalier’s post office opened in 1877, and the census of 1900 counted 671 people here.
How does Cavalier rank for history?
Cavalier is more historic than 54% of U.S. towns. 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 Cavalier?
One place: the Pembina County Courthouse (listed 1980).
How old are the homes in Cavalier?
14% of Cavalier’s homes were built before 1940 (Census estimate, ±5.1 points), against a typical 7.2% for a North Dakota town; the median home was built in 1973.
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 (18), the National Register of Historic Places (1), 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.