County · code 30105
Valley CountyMontana
Valley County is a county in Montana with its county seat in Glasgow. It was created on March 1, 1893, and had a population of 7,578 in 2020.
- Founded1893
- County seatGlasgow
- Land area4,926 sq mi + 136 sq mi water
- Population7,578 2020 Census
- Parcels mapped18,119 checked 14 October 2026
Where it is
Valley 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 Dawson County
An old deed may name a county that no longer exists, or a boundary that has since moved.
Valley County was created from Dawson County on March 1, 1893. It lost territory to the creation of Sheridan County in 1913, Phillips County in 1915, and Daniels County in 1920.
- 1893Valley County created Valley created from Dawson. Act passed 6 February 1893; took effect 1 March 1893. · Mont. Laws 1893, 3d leg., pp. 202-205
- 1913Lost territory Valley lost to creation of Sheridan. · Sheridan County Commissioner's Journal Transcribed, 21 March 1913, pp. 87-88; Burlingame, 17-18
- 1915Lost territory Valley lost to creation of Phillips. · Mont. Rev. Code 1921, sec.4338/pp. 1599-1601; Burlingame, 17-19
- 1920Lost territory Valley lost to creation of Daniels. · Mont. Rev. Code 1921, sec. 4314/pp. 1567-1568; Burlingame, 17-20
Land and parcels
What the maps cover in Valley
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 18,119 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, 6,686 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
Valley 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
Valley 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 Valley County.
See your own lot on these maps
Open Valley 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 Valley County
- When was Valley County founded?
- Valley County was founded in 1893, formed from Dawson County.
- What is the county seat of Valley County?
- The county seat of Valley County is Glasgow.
- Is there an online parcel map for Valley County?
- Yes. A public source publishes a parcel map of 18,119 parcels, rated good enough here. You can click any parcel on it in Parcel Chart's free map, no sign-in needed.
- Has Valley County's boundary or name changed?
- Valley County was created in 1893 from Dawson County. Since then the Atlas of Historical County Boundaries records 3 later changes, chiefly involving Daniels County, Phillips County and Sheridan County.
- Is my lot in a flood zone?
- We do not have flood maps for Valley County yet. Look up the address on FEMA's Flood Map Service Center, which shows the effective flood map for any lot.
Nearby