County · code 30011
Carter CountyMontana
Carter County is a county in Montana with its seat in Ekalaka, formed in 1917. The county is named after Thomas H. Carter.
- Founded1917
- County seatEkalaka
- Named forThomas H. Carter
- Land area3,340 sq mi + 7.5 sq mi water
- Population1,415 2020 Census
- Parcels mapped8,023 checked 14 October 2026
Where it is
Carter on the map of Montana
Montana has 56 counties and county equivalents, each with its own records office. Shapes with a page are links.
History
Formed in 1917 from Fallon County
An old deed may name a county that no longer exists, or a boundary that has since moved.
Carter County was created from Fallon County on February 22, 1917.
- 1917Carter County created Carter created from Fallon. · Mont. Laws 1917, 15th leg., ch. 56/pp. 71-76; "State ex rel. Ford v. Schofield," in Mont. Rpts., 53: 502-518
- 1929Boundary clarified Boundary between Carter and Powder River clarified (no change).with Powder Riverno change· Mont. Laws 1929, 21st leg., ch. 45/pp. 75-76
Land and parcels
What the maps cover in Carter
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 8,023 parcels. Drawn for tax purposes: usually within a few feet of a survey, but not a survey.
checked 14 October 2026 -
Address points Official
One point per address, 1,222 in all from Montana State Library.
edited 13 October 2026 · checked 14 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
Carter 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
Carter 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 Carter County.
See your own lot on these maps
Open Carter 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 Carter County
- When was Carter County founded?
- Carter County was founded in 1917, formed from Fallon County, and named after Thomas H. Carter.
- What is the county seat of Carter County?
- The county seat of Carter County is Ekalaka.
- Is there an online parcel map for Carter County?
- Yes. A public source publishes a parcel map of 8,023 parcels, rated good enough here. You can click any parcel on it in Parcel Chart's free map, no sign-in needed.
- Has Carter County's boundary or name changed?
- Carter County was created in 1917 from Fallon County. Its boundary has been clarified one time since, with no change on the ground.
- Is my lot in a flood zone?
- We do not have flood maps for Carter County yet. Look up the address on FEMA's Flood Map Service Center, which shows the effective flood map for any lot.
Nearby