Big Timber, Montana
city in and county seat of Sweet Grass County, Montana, United States
Big Timber is a city in and the county seat of Sweet Grass County, Montana, United States. The population was 1,650 at the 2020 census.
Big Timber takes its name from Big Timber Creek, which was named by William Clark because of the large cottonwood trees. The post office was established in 1880, closed, then reopened in 1882 with Ella Burns as postmaster. In 1881 Charles McDonnell became the first person to drive sheep into Sweet Grass County and Big Timber. As a stop on the Northern Pacific Railroad, Big Timber became a major wool-shipping depot. It became the county seat in 1895. In 1902, rancher John F. Asbury was elected the first mayor of Big Timber. A fire in 1908 destroyed half the commercial buildings and a third of the residential homes.
Geography
According to the United States Census Bureau, the city has a total area of 0.95 square miles (2.46 km2), of which 0.92 square miles (2.38 km2) is land and 0.03 square miles (0.08 km2) is water.
Begin with the source’s own compact description: “Big Timber, Montana” is city in and county seat of Sweet Grass County, Montana, United States. The dossier treats that line as a proposition to test through Timber, Montana and city, not as a finished interpretation.
Why this record matters
The phrase “city in and county seat of Sweet Grass County, Montana, United States” supplies a clear boundary for inquiry. It also exposes the unanswered questions: who defined that boundary, when it became stable and which sources sit outside it.
Maps, plans, fabric surveys and administrative records can establish how the site’s name, extent and function changed over time. The source revision retrieved here is dated Aug 27, 2026. The linked authority identifier is Q859439. Authority coordinates are 45.833, -109.950. 1 of 2 selected statements include explicit references; 1 carry qualifiers and 0 use preferred rank. The first chronological checks are 2020, 1880, 1882 and 1881.
Modern boundaries and familiar names can conceal earlier jurisdictions or structures that do not align with the present site. The lead is largely declarative, so disagreement and counter-evidence require a deliberate search beyond the opening account. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.
How to read it
Treat names, boundaries and functions as historically changeable. Maps, plans, inventories and administrative records can clarify what the place meant at different dates.
- Historic place names
- Jurisdictional context
- Routes into maps and plans
Contemporary maps, plans, listed-building records, estate papers and the responsible local or national archive.
Three-step research path
- Establish the record: confirm the title “Big Timber, Montana”, its source revision and the description used here.
- Expand the search: follow Big Timber, Montana primary sources, Big Timber, Montana archive and Timber research across catalogues and specialist indexes.
- Test the account: compare the strongest cited source with the responsible institution’s current record and note any disagreement.
Questions for further research
- Which source most directly establishes the central claim about “Big Timber, Montana”?
- Which authority defined the place, boundary or structure at the relevant date?
- What physical evidence or contemporary plan supports the description?
Search terms from this dossier
This entry incorporates text from “Big Timber, Montana” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.