County · code 38019
Cavalier CountyNorth Dakota
Cavalier County is in northeastern North Dakota, with its county seat in Langdon. The county was named after Charles Cavileer and was established as a county when North Dakota became a state in 1889.
- Founded1884
- County seatLangdon
- Named forCharles Cavileer
- Land area1,489 sq mi + 21 sq mi water
- Population3,704 2020 Census
- Parcels mapped15,006 checked 14 October 2026
Where it is
Cavalier on the map of North Dakota
North Dakota has 53 counties and county equivalents, each with its own records office. Shapes with a page are links.
History
Founded in 1884
An old deed may name a county that no longer exists, or a boundary that has since moved.
Cavalier County was organized in 1884 and gained territory from Pembina County in 1887. The county became part of the state of North Dakota on November 2, 1889.
- 1887Gained territory Cavalier gained from Pembina. · Dak. Terr. Laws 1887, 17th sess., ch. 182/p. 380
- 1889Became part of North Dakota Cavalier became a county in the state of North Dakota. · U.S. Stat., vol. 25, ch. 180[1889]/pp. 676-684 and vol. 26, no. 5/pp. 1548-1549; Swindler, 7:526-527; Van Zandt, 134
Land and parcels
What the maps cover in Cavalier
Who publishes each layer, how good it is, and when we last checked.
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Parcels Good enough
Lot lines and tax-map numbers for 15,006 parcels from State of North Dakota GIS Hub (NDIT; State Parcel Program, counties as custodians). Drawn for tax purposes: usually within a few feet of a survey, but not a survey.
edited 12 October 2026 · checked 14 October 2026 -
Address points Official
One point per address, 2,617 in all from State of North Dakota — NDGISHUB / ND Department of Emergency Services (owner NDGISHDP-DES).
edited 12 October 2026 · checked 13 October 2026 -
Buildings Reference
Roof outlines traced from aerial imagery from FEMA Response Geospatial Office with Oak Ridge National Laboratory (ORNL). Good for seeing what is on a lot; not accurate enough to set a fence from.
checked 18 October 2026
- Official
- from the office that keeps the record
- Good enough
- a reliable statewide or national copy
- Fallback
- a guide only; check the official record
- Missing
- nothing public found yet
People and land
Cavalier by the Census
Source: US Census Bureau, 2020 Census; US Census Bureau, 2020 Gazetteer Files. Not endorsed or certified by the Census Bureau.
Rules and offices
Cavalier County's official site
We have found the county's site but not its offices yet; start there.
County government
- County government
The official website of Cavalier County.
See your own lot on these maps
Open Cavalier County on Parcel Chart's free map and click your parcel. Save it with a free account; the full record of your place (site map, projects, documents) is Pro, in early access.
Questions
Common questions about Cavalier County
- When was Cavalier County founded?
- Cavalier County was founded in 1884, and named after Charles Cavileer.
- What is the county seat of Cavalier County?
- The county seat of Cavalier County is Langdon.
- Is there an online parcel map for Cavalier County?
- Yes. State of North Dakota GIS Hub (NDIT; State Parcel Program, counties as custodians) publishes a parcel map of 15,006 parcels, rated good enough here. You can click any parcel on it in Parcel Chart's free map, no sign-in needed.
- Has Cavalier County's boundary or name changed?
- Atlas of Historical County Boundaries records 2 changes for Cavalier County. Since then the Atlas of Historical County Boundaries records 2 later changes, chiefly involving Pembina County.
- Is my lot in a flood zone?
- We do not have flood maps for Cavalier County yet. Look up the address on FEMA's Flood Map Service Center, which shows the effective flood map for any lot.
Nearby