Roundup, MT Demographics

A map of Roundup's Population by Race

Race	2024 Pop	2020 Pop	2024 %	2020 %
White	1,756	1,541	87.7%	88.5%
Hispanic	145	67	7.2%	3.8%
Multiracial	54	75	2.7%	4.3%
Native American/Other	48	47	2.4%	2.7%
Black	0	0	0.0%	0.0%
Asian	0	12	0.0%	0.7%

Roundup, Montana has an estimated population of 2,003, a large increase from the 1,742 recorded in the 2020 Census. The population is 87.7% White, 7.2% Hispanic, 2.7% Multiracial, 2.4% Native American/Other, 0.0% Black, and 0.0% Asian. This demographic dot map shows the population of Roundup, with one dot drawn for each person counted by the Census, color-coded by race.

Roundup has become more racially diverse since the 2020 Census. It is considerably less diverse than Montana overall. Demographers use a diversity index to measure the probability that two randomly selected individuals belong to different racial or ethnic groups. In Roundup, that probability was 21.3% in 2020 and 22.5% in the most recent ACS estimates.

Roundup is ranked the 53rd most populous place in Montana, out of 497 places. This ranking is based on the Census definition of a place, which includes incorporated places like cities, towns, and villages, as well as unincorporated census-designated places (CDPs). Roundup was ranked the 63rd most populous place in the 2020 Census.

Roundup's White Population

1,756 residents of Roundup, or 87.7% of the population, identify as White. The share of White residents in Roundup is slightly higher than in Montana overall, where 83.6% of the population is White. Roundup ranks 260th statewide in terms of White residents as a share of the population, out of 497 places.

Since the 2020 Census, Roundup's White population has grown by an estimated 14.0%. White residents' share of Roundup's population has decreased from 88.5% to 87.7%.

Roundup is more White than neighboring Kilby Butte Colony (0% White), Flat Willow Colony (0% White), and Mountain View Colony (50.9% White). Roundup is less White than neighboring Camp Three (92.8% White), and Klein (91.5% White).

Roundup's Black Population

0 residents of Roundup, or 0.0% of the population, identify as Black. The share of Black residents in Roundup is comparable to the share in Montana overall, where 0.4% of the population is Black. Roundup ranks 179th statewide in terms of Black residents as a share of the population, out of 497 places.

Since the 2020 Census, Roundup's Black population has grown from 0 to an estimated 0. Black residents' share of Roundup's population has remained roughly unchanged at 0.0%.

Roundup's Asian Population

0 residents of Roundup, or 0.0% of the population, identify as Asian. The share of Asian residents in Roundup is comparable to the share in Montana overall, where 0.8% of the population is Asian. Roundup ranks 87th statewide in terms of Asian residents as a share of the population, out of 497 places.

Since the 2020 Census, Roundup's Asian population has declined by an estimated 100.0%. Asian residents' share of Roundup's population has decreased from 0.7% to 0.0%.

Roundup's Hispanic Population

145 residents of Roundup, or 7.2% of the population, identify as Hispanic. The share of Hispanic residents in Roundup is slightly higher than in Montana overall, where 4.6% of the population is Hispanic. Roundup ranks 150th statewide in terms of Hispanic residents as a share of the population, out of 497 places.

Since the 2020 Census, Roundup's Hispanic population has grown by an estimated 116.4%. Hispanic residents' share of Roundup's population has increased from 3.8% to 7.2%.

Roundup is more Hispanic than neighboring Camp Three (0% Hispanic), Klein (0% Hispanic), and Flat Willow Colony (0% Hispanic). Roundup is less Hispanic than neighboring Kilby Butte Colony (50% Hispanic), and Mountain View Colony (49.1% Hispanic).

Roundup's Native American/Other Population

48 residents of Roundup, or 2.4% of the population, identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other. The share of Native American/Other residents in Roundup is slightly lower than in Montana overall, where 5.9% of the population is Native American/Other. Roundup ranks 171st statewide in terms of Native American/Other residents as a share of the population, out of 497 places.

Since the 2020 Census, Roundup's Native American/Other population has grown by an estimated 2.1%. Native American/Other residents' share of Roundup's population has remained roughly unchanged at 2.4%.

Roundup is more Native American/Other than neighboring Klein (0% Native American/Other), Flat Willow Colony (0% Native American/Other), and Mountain View Colony (0% Native American/Other). Roundup is less Native American/Other than neighboring Camp Three (7.2% Native American/Other), and Kilby Butte Colony (50% Native American/Other).

Roundup's Multiracial Population

54 residents of Roundup, or 2.7% of the population, identify as Multiracial. The share of Multiracial residents in Roundup is comparable to the share in Montana overall, where 4.7% of the population is Multiracial. Roundup ranks 255th statewide in terms of Multiracial residents as a share of the population, out of 497 places.

Since the 2020 Census, Roundup's Multiracial population has declined by an estimated 28.0%. Multiracial residents' share of Roundup's population has decreased from 4.3% to 2.7%.

Roundup is more Multiracial than neighboring Camp Three (0% Multiracial), Kilby Butte Colony (0% Multiracial), Flat Willow Colony (0% Multiracial), and Mountain View Colony (0% Multiracial). Roundup is less Multiracial than neighboring Klein (8.5% Multiracial).

Sources: Most recent population estimates are from the 2020-2024 American Community Survey 5-Year Estimates. 2020 population counts and map data are from 2020 Census State Redistricting Data. Geographic data are from Census TIGER/Line Shapefiles.