Montana · FIPS 30097 · County seat: Big Timber
Sweet Grass County, MT GIS & Parcel Viewer
Use this page to reach the official statewide parcel map for Sweet Grass 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 Sweet Grass County statewide map ↗
Opens svc.mt.gov in a new tab. We link out and never embed or copy parcel data.
Sweet Grass County at a glance
| 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 | Big Timber |
| Population | 3,763 (2023 Census Bureau estimate) |
| Land area | 1,856 sq mi |
| FIPS code | 30097 |
Where the parcel data comes from
The link goes to a statewide map (Montana Cadastral (Montana State Library)). It shows parcels for Sweet Grass County along with the rest of Montana. Because a state agency compiles this layer from local data, check with the Sweet Grass County assessor or recorder before relying on a recent change. When we tested the link in October 2026 it opened with no login and no fee.
Finding a property on this statewide map
- Open Montana Cadastral (Montana State Library) in a new tab and zoom to Sweet Grass County (around Big Timber).
- Type a street address into the search box, or click directly on a parcel.
- Review the parcel attributes; field names vary by state.
- Confirm anything important with the county assessor, since the statewide layer is a compiled copy.
Many parcel sites expect owner names last name first. If a full name finds nothing, try just the surname.
About Sweet Grass County
The U.S. Census Bureau estimated Sweet Grass County's population at 3,763 in 2023, spread over about 1,856 square miles of land, or roughly 2.0 people per square mile. By population it ranks 39th of 56 counties in Montana. Its county seat is Big Timber.
Nearby parcel maps
Parcels close to the edge of Sweet Grass County can fall in the next county over. Neighboring counties:
Before you rely on the lines
Online parcel lines are drawn for tax and planning use. They can be off by several feet, so use a recorded plat or a licensed surveyor for fences, setbacks or a sale.