Meagher County, Montana

Founding: 1867
Parent counties: Chouteau and Gallatin
Namesake: Thomas Meagher, Montana territorial governor
Seat: Diamond City (1867–1879); White Sulphur Springs (1879–)
Land area: 2,392 square miles
Population (2020): 1,927
Population (historic): 1,387 (1870); 4,749 (1890); 4,190 (1910); 2,272 (1930)
Periods of population growth: pre-1870–1890; 1900s; 1950s; 1970s; 1990s; 2010s
Subdivisions: One city; two CDPs
National Register listings: Six
Pre-1940 residences (estimated): 382 (26.9%)
Pre-1940 housing survival rate: 52.8%

Farm housing in disrepair (1950): 4.1%

Nonfarm housing in disrepair (1950): 5.7%

Average farmhouse value (1930): $1,011
Average outbuilding value (1930): $1,695

Average farmhouse size (1940): 4.6 rooms

Number of farms (1920): 447
Average farm size (1920): 306.1 acres
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White Sulphur Springs

 
Namesake: Medicinal springs at the city site
Founding: 1866 (founding as Brewer's Springs); 1875 (post office)
Population (2020): 955
Population (historic): 417 (1910); 629 (1920); 553 (1930)
Periods of population growth: pre-1910–1920; 1930–1950; 1960–1980; 1990s; 2010s
Pre-1940 residences (estimated): 166 (29.9%)
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