Roundup Flag

Roundup

County Seat:
Yes
Area (mi²):
1.293
State:
Montana

Roundup is a city located in Musselshell County, Montana. Roundup has a 2026 population of 2,017. It is also the county seat of Musselshell County. Roundup is currently growing at a rate of 1.66% annually and its population has increased by 15.39% since the most recent census, which recorded a population of 1,748 in 2020.

2K
Total Population
1,560
Density (mi²)
33 1.66%
Growth

Nearby Cities

Sources

  1. US Census State Population Estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  2. US Census County Population Estimates - Most recent county estimates from the Census Bureau's Population Estimates Program
  3. American Community Survey (2009 - 2013)
  4. Census QuickFacts
  5. Historical Populations of States and Counties (1790 - 1990)