County · code 38017
Cass CountyNorth Dakota
Cass County is in North Dakota, with its seat in Fargo. The county was formed in 1873 and named after George Washington Cass.
- Founded1873
- County seatFargo
- Named forGeorge Washington Cass
- Land area1,765 sq mi + 2.9 sq mi water
- Population184,525 2020 Census
- Parcels mapped75,733 checked 16 October 2026
Where it is
Cass 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 1873
An old deed may name a county that no longer exists, or a boundary that has since moved.
Cass County lost area to the creation of Traill County in 1875. Cass became a county in the state of North Dakota in 1889. In 1961, Cass gained small areas from Clay County in North Dakota and Clay County in Minnesota when the channel of the Red River altered.
- 1875Lost territory Cass lost to creation of Traill. · Dak. Terr. Laws 1874, 11th sess., ch. 32, sec. 1/p. 74
- 1889Became part of North Dakota Cass 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
- 1961Gained territory Cass gained small areas from Clay (Minnesota) when approximately twenty-two and one-half acres along the Red River, in townships 139 and 140 north, range 48 west, were transferred to North Dakota from Minnesota. · N. Dak. Laws 1961, 37th sess., ch. 318/p. 517; U.S. Stat., vol. 75, p. 399; Van Zandt, 134
Land and parcels
What the maps cover in Cass
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 75,733 parcels. Drawn for tax purposes: usually within a few feet of a survey, but not a survey.
checked 16 October 2026 -
Address points Official
One point per address, 112,079 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
Cass 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
Cass 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 Cass County.
See your own lot on these maps
Open Cass 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 Cass County
- When was Cass County founded?
- Cass County was founded in 1873, and named after George Washington Cass.
- What is the county seat of Cass County?
- The county seat of Cass County is Fargo.
- Is there an online parcel map for Cass County?
- Yes. A public source publishes a parcel map of 75,733 parcels, rated good enough here. You can click any parcel on it in Parcel Chart's free map, no sign-in needed.
- Has Cass County's boundary or name changed?
- Atlas of Historical County Boundaries records 3 changes for Cass County. Since then the Atlas of Historical County Boundaries records 3 later changes, chiefly involving Clay (Minn.) County and Traill County.
- Is my lot in a flood zone?
- We do not have flood maps for Cass County yet. Look up the address on FEMA's Flood Map Service Center, which shows the effective flood map for any lot.
Nearby