County · code 30087
Rosebud CountyMontana
Rosebud County is a county in Montana, with its seat in Forsyth, established in 1901.
- Founded1901
- County seatForsyth
- Land area5,008 sq mi + 17 sq mi water
- Population8,329 2020 Census
- Parcels mapped11,141 checked 14 October 2026
Where it is
Rosebud 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 1901 from Custer County
An old deed may name a county that no longer exists, or a boundary that has since moved.
Rosebud County was formed in 1901 from Custer County. Forsyth is the county seat.
Deeds and plats from before 1901 for land now in Rosebud County may have been recorded in Custer County.
- 1901Rosebud County created Rosebud created from Custer. Act passed 11 February 1901; took effect 1 March 1901. · Mont. Laws 1901, 7th leg., pp. 97-101
- 1913Lost territory Rosebud lost to creation of Big Horn. · Mont. Rev. Code 1921, sec. 4306/pp. 1556-1557; Burlingame, 17-18
- 1917Exchanged territory Rosebud exchanged with Dawson when their common boundary was placed on federal land survey lines. · Mont. Laws 1917, 15th leg., ch. 36/pp. 38-39
- 1917Exchanged territory Rosebud exchanged with Musselshell and Yellowstone. · Mont. Laws 1917, 15th leg., chs. 108, 159/pp. 177-178, 404-405
- 1919Lost territory Rosebud lost to creation of Treasure. Act passed 7 February 1919; took effect 1 April 1919. · Mont. Laws 1919, 16th leg., ch. 5/pp. 8-15
Land and parcels
What the maps cover in Rosebud
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 11,141 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, 4,972 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
Rosebud 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
Rosebud 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 Rosebud County.
See your own lot on these maps
Open Rosebud 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 Rosebud County
- When was Rosebud County founded?
- Rosebud County was founded in 1901, formed from Custer County.
- What is the county seat of Rosebud County?
- The county seat of Rosebud County is Forsyth.
- Is there an online parcel map for Rosebud County?
- Yes. A public source publishes a parcel map of 11,141 parcels, rated good enough here. You can click any parcel on it in Parcel Chart's free map, no sign-in needed.
- Has Rosebud County's boundary or name changed?
- Rosebud County was created in 1901 from Custer County. Since then the Atlas of Historical County Boundaries records 4 later changes, chiefly involving Big Horn County, Dawson County and Musselshell County.
- Is my lot in a flood zone?
- We do not have flood maps for Rosebud County yet. Look up the address on FEMA's Flood Map Service Center, which shows the effective flood map for any lot.
Nearby