Treasure County Demographics

A map of Treasure County's Population by Race

Race	2024 Pop	2020 Pop	2024 %	2020 %
White	681	688	93.0%	90.3%
Hispanic	38	31	5.2%	4.1%
Asian	7	3	1.0%	0.4%
Multiracial	5	23	0.7%	3.0%
Native American/Other	1	16	0.1%	2.1%
Black	0	1	0.0%	0.1%

Treasure County, Montana has an estimated population of 732, a decrease from the 762 recorded in the 2020 Census. The population is 93.0% White, 5.2% Hispanic, 1.0% Asian, 0.7% Multiracial, 0.1% Native American/Other, and 0.0% Black. This demographic dot map shows the population of Treasure County, with one dot drawn for each person counted by the Census, color-coded by race.

Treasure has become considerably less 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 Treasure County, that probability was 18.2% in 2020 and 13.2% in the most recent ACS estimates.

Treasure County is ranked the 55th most populous county in Montana, out of 56 counties. Treasure County was ranked the 55th most populous county in the 2020 Census.

Treasure County's White Population

681 residents of Treasure County, or 93.0% of the population, identify as White. The share of White residents in Treasure County is higher than in Montana overall, where 83.6% of the population is White. Treasure County ranks 22nd statewide in terms of White residents as a share of the population, out of 56 counties.

Since the 2020 Census, Treasure County's White population has declined by an estimated 1.0%. White residents' share of Treasure County's population has increased from 90.3% to 93.0%.

Treasure County is more White than neighboring Rosebud County (51.4% White), Big Horn County (27% White), Yellowstone County (83.4% White), and Musselshell County (86.6% White). Treasure County is less White than neighboring Garfield County (96.7% White).

Treasure County's Black Population

0 residents of Treasure County, or 0.0% of the population, identify as Black. The share of Black residents in Treasure County is comparable to the share in Montana overall, where 0.4% of the population is Black. Treasure County ranks 42nd statewide in terms of Black residents as a share of the population, out of 56 counties.

Since the 2020 Census, Treasure County's Black population has declined by an estimated 100.0%. Black residents' share of Treasure County's population has remained roughly unchanged at 0.0%.

Treasure County is less Black than neighboring Rosebud County (0.1% Black), Big Horn County (0.3% Black), and Yellowstone County (0.4% Black).

Treasure County's Asian Population

7 residents of Treasure County, or 1.0% of the population, identify as Asian. The share of Asian residents in Treasure County is comparable to the share in Montana overall, where 0.8% of the population is Asian. Treasure County ranks 28th statewide in terms of Asian residents as a share of the population, out of 56 counties.

Since the 2020 Census, Treasure County's Asian population has grown by an estimated 133.3%. Asian residents' share of Treasure County's population has increased from 0.4% to 1.0%.

Treasure County is more Asian than neighboring Big Horn County (0.2% Asian), Yellowstone County (0.7% Asian), Garfield County (0% Asian), and Musselshell County (0% Asian). Treasure County is less Asian than neighboring Rosebud County (2% Asian).

Treasure County's Hispanic Population

38 residents of Treasure County, or 5.2% of the population, identify as Hispanic. The share of Hispanic residents in Treasure County is comparable to the share in Montana overall, where 4.6% of the population is Hispanic. Treasure County ranks 9th statewide in terms of Hispanic residents as a share of the population, out of 56 counties.

Since the 2020 Census, Treasure County's Hispanic population has grown by an estimated 22.6%. Hispanic residents' share of Treasure County's population has increased from 4.1% to 5.2%.

Treasure County is more Hispanic than neighboring Rosebud County (3.7% Hispanic), Big Horn County (4.7% Hispanic), Garfield County (0% Hispanic), and Musselshell County (4.3% Hispanic). Treasure County is less Hispanic than neighboring Yellowstone County (6.6% Hispanic).

Treasure County's Native American/Other Population

1 residents of Treasure County, or 0.1% of the population, identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other. The share of Native American/Other residents in Treasure County is lower than in Montana overall, where 5.9% of the population is Native American/Other. Treasure County ranks 24th statewide in terms of Native American/Other residents as a share of the population, out of 56 counties.

Since the 2020 Census, Treasure County's Native American/Other population has declined by an estimated 93.8%. Native American/Other residents' share of Treasure County's population has decreased from 2.1% to 0.1%.

Treasure County is less Native American/Other than neighboring Rosebud County (38% Native American/Other), Big Horn County (66.2% Native American/Other), Yellowstone County (4.1% Native American/Other), Garfield County (1.1% Native American/Other), and Musselshell County (5.8% Native American/Other).

Treasure County's Multiracial Population

5 residents of Treasure County, or 0.7% of the population, identify as Multiracial. The share of Multiracial residents in Treasure County is slightly lower than in Montana overall, where 4.7% of the population is Multiracial. Treasure County ranks 54th statewide in terms of Multiracial residents as a share of the population, out of 56 counties.

Since the 2020 Census, Treasure County's Multiracial population has declined by an estimated 78.3%. Multiracial residents' share of Treasure County's population has decreased from 3.0% to 0.7%.

Treasure County is less Multiracial than neighboring Rosebud County (4.8% Multiracial), Big Horn County (1.6% Multiracial), Yellowstone County (4.7% Multiracial), Garfield County (2.2% Multiracial), and Musselshell County (3.3% 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.