County · code 30081
Ravalli CountyMontana
Ravalli County is a county in Montana, with its seat in Hamilton, formed in 1893.
- Founded1893
- County seatHamilton
- Named forAntonio Ravalli
- Land area2,391 sq mi + 9.4 sq mi water
- Population44,174 2020 Census
- Parcels mapped33,255 checked 15 October 2026
Where it is
Ravalli 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 1893 from Missoula County
An old deed may name a county that no longer exists, or a boundary that has since moved.
Ravalli County was created from Missoula County by acts passed in February and March 1893, taking effect on April 1, 1893. The county was named after Antonio Ravalli.
- 1893Ravalli County created Ravalli created from Missoula. Acts passed 16 February and 2 March 1893; took effect 1 April 1893. · Mont. Laws 1893, 3d leg., pp. 209-213
Land and parcels
What the maps cover in Ravalli
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 33,255 parcels. Drawn for tax purposes: usually within a few feet of a survey, but not a survey.
edited 15 August 2026 · checked 15 October 2026 -
Address points Official
One point per address, 26,902 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
Ravalli 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
Ravalli 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 Ravalli County.
See your own lot on these maps
Open Ravalli 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 Ravalli County
- When was Ravalli County founded?
- Ravalli County was founded in 1893, formed from Missoula County, and named after Antonio Ravalli.
- What is the county seat of Ravalli County?
- The county seat of Ravalli County is Hamilton.
- Is there an online parcel map for Ravalli County?
- Yes. A public source publishes a parcel map of 33,255 parcels, rated good enough here. You can click any parcel on it in Parcel Chart's free map, no sign-in needed.
- Has Ravalli County's boundary or name changed?
- Ravalli County was created in 1893 from Missoula County. The Atlas of Historical County Boundaries records no boundary change since.
- Is my lot in a flood zone?
- We do not have flood maps for Ravalli County yet. Look up the address on FEMA's Flood Map Service Center, which shows the effective flood map for any lot.
Nearby