City · Montana
Roundup, Montana
Roundup, city, in Musselshell County, Montana. Roundup had 2,075 residents on July 1, 2025 by the Census Bureau's estimate, up 18.8% since 2020; the 2020 Census counted 1,742 and the ACS 2020-2024 5-year estimates put it at 2,003 (±229). GEOID 3064525.
Residents, July 2025 estimate
2,075
Census Bureau estimate (no margin published)
2020 Census count: 1,742 · ACS 2020-2024: 2,003 ±229
Median household income
$57,847
±$15,475 (90% margin)
Montana: $72,509
Median home value
$166,200
±$24,195 (90% margin)
Montana: $375,800
Median gross rent
$950
±$571 (90% margin)
Montana: $1,081
Where is Roundup and what county is it in?
Roundup is a city in Musselshell County, Montana. It covers 1.3 square miles of land, 1,347 residents per square mile in 2020.
Source: 2024 Gazetteer and 2020 place-by-county files, U.S. Census Bureau · Census reference files
How many people live in Roundup, and is it growing?
The Census Bureau estimates that 2,075 people lived in Roundup on July 1, 2025, up 18.8% since 2020, faster than Montana (+5.6%). The 2020 Census counted 1,742 residents. The 2020-2024 American Community Survey, a five-year sample, puts the population at 2,003 (±229).
| Measure | Roundup | Musselshell County | Change since 2015-2019 |
|---|---|---|---|
| Total population | 2,003 ±229 | 5,152 | no clear change |
| Households | 861 ±111 | 2,148 | no clear change |
| Average household size | 2.30 ±0.25 | 2.37 | no clear change |
| Housing units | 1,032 ±109 | 2,663 | no clear change |
Roundup's population since 2000
From 1,931 in 2000 to 2,075 in 2025: up 7.5%. The 2000, 2010 and 2020 figures are census counts, each for Roundup as it was drawn that year: a place that annexed land, or a community that has since incorporated, covered a different area then. The 2005 figure is the Census Bureau's intercensal estimate, revised to fit the 2000 and 2010 counts and drawn on 2010 boundaries; 2015 and 2025 are July 1 estimates made from the census before them.
Source: The 2000, 2010 and 2020 Census counts and the Census Bureau's population estimates (intercensal 2000-2010, Vintage 2020, Vintage 2025) · Census population estimates
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026); Census PEP Vintage 2025 (SUB-EST2025, CO-EST2025); 2020 Census P.L. 94-171 · Check it at data.census.gov
Who lives in Roundup?
The median resident of Roundup is 42.4 years old; 24.0% are under 18 and 24.4% are 65 or older. The largest group is non-Hispanic white residents at 87.7%, then Hispanic or Latino residents (of any race) at 7.2%.
| Measure | Roundup | Musselshell County | Change since 2015-2019 |
|---|---|---|---|
| Median age | 42.4 ±6.7 | 51.3 | no clear change |
| Under 18 years | 24.0% ±4.6 pts | 19.4% | – |
| 65 years and over | 24.4% ±4.6 pts | 29.0% | – |
| Male | 50.0% ±4.4 pts | 51.5% | – |
| Hispanic or Latino (any race) | 7.2% ±3.3 pts | 4.3% | no clear change |
| White alone, not Hispanic | 87.7% ±4.4 pts | 86.6% | no clear change |
| Black or African American alone, not Hispanic | 0.0% ±1.5 pts | 0.0% | – |
| Asian alone, not Hispanic | 0.0% ±1.5 pts | 0.0% | – |
| American Indian and Alaska Native alone, not Hispanic | 2.1% ±1.7 pts | 3.6% | – |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.0% ±1.5 pts | 0.0% | – |
| Two or more races, not Hispanic | 2.7% ±1.6 pts | 3.3% | – |
| Some other race alone, not Hispanic | 0.2% ±0.5 pts | 2.2% | – |
| Born outside the United States | 2.8% ±2.6 pts | 1.7% | – |
| Speak a language other than English at home (age 5+) | 3.0% ±1.5 pts | 5.0% | – |
| Civilian veterans (age 18+) | 10.9% ±3.1 pts | 11.5% | – |
| With a disability | 23.8% ±5.8 pts | 23.1% | – |
| No health insurance coverage | 8.6% ±3.9 pts | 10.1% | no clear change |
| High school graduate or higher (age 25+) | 88.6% ±4.6 pts | 89.3% | – |
| Bachelor's degree or higher (age 25+) | 13.5% ±5.0 pts | 22.4% | no clear change |
| Graduate or professional degree (age 25+) | 1.8% ±1.3 pts | 5.8% | – |
| Lived in the same house a year earlier | 83.1% ±5.7 pts | 89.5% | – |
| Moved from another state in the past year | 7.7% ±4.6 pts | 4.0% | – |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profiles DP02, DP05) · Check it at data.census.gov
What do households in Roundup earn?
Half of Roundup's 861 households earn less than $57,847 a year (±$15,475), against $58,920 in Musselshell County and $72,509 in Montana. In 2015-2019 it was $42,225 in 2024 dollars; the margins of error cannot tell the two periods apart. 16.6% of residents live below the poverty line.
| Measure | Roundup | Musselshell County | Change since 2015-2019 |
|---|---|---|---|
| Median household income | $57,847 ±$15,475 | $58,920 | no clear change |
| Mean household income | $81,720 ±$27,659 | $77,399 | – |
| Per capita income | $36,007 ±$12,652 | $33,460 | no clear change |
| People below the poverty line | 16.6% ±7.1 pts | 17.0% | no clear change |
| Children under 18 below the poverty line | 24.2% ±16.7 pts | 23.0% | – |
| Households receiving SNAP | 13.0% ±6.0 pts | 10.2% | – |
| Households with a computer | 81.6% ±6.9 pts | 88.5% | – |
| Households with a broadband subscription | 70.2% ±8.6 pts | 83.4% | – |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP03) · Check it at data.census.gov
What does housing cost in Roundup?
Owners occupy 73.5% of Roundup's occupied homes and renters 26.5%. The median owner-occupied home is valued at $166,200 by its owner (±$24,195). The median renter pays $950 a month including utilities, and 37.7% of renters pay 35% or more of their income on rent.
| Measure | Roundup | Musselshell County | Change since 2015-2019 |
|---|---|---|---|
| Median home value (owner-occupied) | $166,200 ±$24,195 | $235,000 | +$46,207 |
| Median gross rent | $950 ±$571 | $1,138 | no clear change |
| Renters paying 35% or more of income on rent | 37.7% ±19.0 pts | 41.0% | no clear change |
| Median monthly owner costs, with a mortgage | $1,025 ±$264 | $1,382 | – |
| Owner-occupied homes | 73.5% ±8.9 pts | 85.1% | +13.3 pts |
| Renter-occupied homes | 26.5% ±8.9 pts | 14.9% | – |
| Housing units | 1,032 ±109 | 2,663 | no clear change |
| Homeowner vacancy rate | 1.7% ±2.6 pts | 3.5% | – |
| Rental vacancy rate | 0.0% ±12.3 pts | 0.0% | – |
| Single-family detached homes | 79.8% ±5.8 pts | 78.3% | – |
| Mobile homes | 11.8% ±5.5 pts | 18.0% | – |
| Built 2020 or later | 0.0% ±2.9 pts | 0.9% | – |
| Built 2010 to 2019 | 4.7% ±3.0 pts | 8.3% | – |
| Built 1939 or earlier | 34.6% ±7.9 pts | 19.9% | – |
| Households with no vehicle | 12.1% ±6.0 pts | 5.9% | – |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP04) · Check it at data.census.gov
How many new homes is Roundup building?
Builders took permits for 7 new housing units in Roundup in 2025 (3 in single-family houses), 3.4 per 1,000 residents against 4.6 across Montana.
Counts of units in permits a local office issued; not every permitted unit is built. A year marked with months was reported for part of the year.
Source: Building Permits Survey, annual place files 2019-2025, U.S. Census Bureau · Census Building Permits Survey
How do people in Roundup work and get to work?
56.2% of Roundup's workers drive alone and 15.9% work from home. The average trip to work takes 15.8 minutes. The unemployment rate in 2020-2024 averaged 10.7%.
| Measure | Roundup | Musselshell County | Change since 2015-2019 |
|---|---|---|---|
| In the labor force (age 16+) | 61.2% ±6.5 pts | 54.8% | – |
| Unemployment rate | 10.7% ±6.3 pts | 9.2% | – |
| Drove alone to work | 56.2% ±9.4 pts | 59.1% | – |
| Carpooled | 11.5% ±7.2 pts | 8.8% | – |
| Public transportation | 0.0% ±3.5 pts | 0.0% | – |
| Walked | 11.5% ±7.1 pts | 5.8% | – |
| Worked from home | 15.9% ±7.3 pts | 22.8% | +8.4 pts |
| Mean travel time to work | 15.8 min ±4.6 | 25.3 min | no clear change |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP03) · Check it at data.census.gov
What census tracts are in Roundup?
1 census tract lies mostly in Roundup (2020 census blocks).
| Tract | Residents, 2020-2024 | Median household income |
|---|---|---|
| Tract 2Musselshell County | 2,162 | $58,393 |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026); 2020 block assignment files (tract share = share of the tract's census blocks in Roundup) · Census block assignment files
How does Roundup compare with other places in Montana?
By the Census Bureau's July 2025 estimates, Roundup is the 7,557th-most populous of the 19,476 U.S. incorporated places that have one and the 36th-most populous of 127 in Montana.
Roundup ranks 62nd of 90 places in Montana with 1,000 or more residents and a reliable estimate, by median household income.
| Measure | Rank | Of |
|---|---|---|
| Population, July 2025 estimate | 36th | 127 |
| Growth 2020-2025 (PEP) | 7th | 53 |
| Residents per square mile | 38th | 93 |
| Median household income | 62nd | 90 |
| Per capita income | 51st | 93 |
| Median home value | 79th | 89 |
| Median gross rent | 41st | 82 |
| Poverty rate | 20th | 65 |
| Bachelor's degree or higher | 80th | 90 |
| Median age | 34th | 93 |
| Owner-occupied share | 29th | 92 |
| Work from home | 11th | 46 |
| Travel time to work | 56th | 93 |
Roundup's figures with every place in Montana (CSV)
Every place in Montana, sortable · Compare Roundup with other places
Source: PlainCities ranks computed from the American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) and PEP Vintage 2025 · How ranks are computed
How reliable are the figures for Roundup?
12 of the 57 figures for Roundup on this page carry a coefficient of variation over 40% and are marked with a ring: they come from a small sample, so read them as rough.
The American Community Survey samples about one household in eight over five years, so every figure is an estimate with a 90% margin of error (shown under each value). A ring marks an estimate whose coefficient of variation is over 40%. A change is called only when the gap between the two periods is larger than their combined 90% margin (the square root of the sum of the two squared margins), the Census Bureau's test. How to read a margin of error.
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026): margins of error as published · ACS technical documentation
How these figures are made: methodology and release checks · reading a margin of error · every state · corrections
Not on this page: crime, weather and schools for Roundup are other agencies' records. Crime: the FBI's Crime Data Explorer · climate: NOAA's U.S. Climate Normals · schools: the National Center for Education Statistics' public schools in Roundup.