Montana · FIPS 30005 · County seat: Chinook
Blaine County, MT GIS & Parcel Viewer
Use this page to reach the official statewide parcel map for Blaine County, Montana. The button below opens Montana Cadastral (Montana State Library) in a new tab, so you can look up parcels by address, owner or parcel number on the source site itself.
Open the Blaine County statewide map ↗
Opens svc.mt.gov in a new tab. We link out and never embed or copy parcel data.
Quick facts
| Official map | Montana Cadastral (Montana State Library) |
|---|---|
| Type | Statewide map (covers all of Montana) |
| Website | svc.mt.gov |
| Access | Free, no login (checked Oct 2026) |
| County seat | Chinook |
| Population | 6,899 (2023 Census Bureau estimate) |
| Land area | 4,228 sq mi |
| FIPS code | 30005 |
About the official source
The link goes to a statewide map (Montana Cadastral (Montana State Library)). It shows parcels for Blaine County along with the rest of Montana. Because a state agency compiles this layer from local data, check with the Blaine County assessor or recorder before relying on a recent change. Our October 2026 check found the map open to the public, with no account or payment needed.
Finding a property on this statewide map
- Open the statewide map with the button above.
- Search for an address in Blaine County, or zoom to the county on the map.
- Click a parcel to see the attributes the state layer includes.
- Write down the parcel number and use it for records searches with the Blaine County assessor or recorder.
Many parcel sites expect owner names last name first. If a full name finds nothing, try just the surname.
About Blaine County
The U.S. Census Bureau estimated Blaine County's population at 6,899 in 2023, spread over about 4,228 square miles of land, or roughly 1.6 people per square mile. By population it ranks 31st of 56 counties in Montana. Its county seat is Chinook.
Nearby parcel maps
Parcels close to the edge of Blaine County can fall in the next county over. Neighboring counties:
A note on accuracy
Keep in mind that a GIS parcel layer is a tax map, not a survey. For exact boundaries, look at the recorded deed and plat or hire a licensed land surveyor.