Westby, MT Demographics

A map of Westby's Population by Race

Race	2024 Pop	2020 Pop	2024 %	2020 %
White	286	151	98.6%	90.4%
Multiracial	4	7	1.4%	4.2%
Black	0	2	0.0%	1.2%
Asian	0	0	0.0%	0.0%
Hispanic	0	7	0.0%	4.2%
Native American/Other	0	0	0.0%	0.0%

Westby, Montana has an estimated population of 290, a dramatic increase from the 167 recorded in the 2020 Census. The population is 98.6% White, 1.4% Multiracial, 0.0% Black, 0.0% Asian, 0.0% Hispanic, and 0.0% Native American/Other. This demographic dot map shows the population of Westby, with one dot drawn for each person counted by the Census, color-coded by race.

Westby 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 Westby, that probability was 17.9% in 2020 and 2.7% in the most recent ACS estimates.

Westby is ranked the 206th 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). Westby was ranked the 267th most populous place in the 2020 Census.

Westby's White Population

286 residents of Westby, or 98.6% of the population, identify as White. The share of White residents in Westby is considerably higher than in Montana overall, where 83.6% of the population is White. Westby ranks 192nd statewide in terms of White residents as a share of the population, out of 497 places.

Since the 2020 Census, Westby's White population has grown by an estimated 89.4%. White residents' share of Westby's population has increased from 90.4% to 98.6%.

Westby is more White than neighboring Grenora (88.7% White), Fortuna (85.4% White), Antelope (0% White), Reserve (89.5% White), and Plentywood (87% White).

Westby's Black Population

0 residents of Westby, or 0.0% of the population, identify as Black. The share of Black residents in Westby is comparable to the share in Montana overall, where 0.4% of the population is Black. Westby ranks 25th statewide in terms of Black residents as a share of the population, out of 497 places.

Since the 2020 Census, Westby's Black population has declined by an estimated 100.0%. Black residents' share of Westby's population has decreased from 1.2% to 0.0%.

Westby's Asian Population

0 residents of Westby, or 0.0% of the population, identify as Asian. The share of Asian residents in Westby is comparable to the share in Montana overall, where 0.8% of the population is Asian. Westby ranks 215th statewide in terms of Asian residents as a share of the population, out of 497 places.

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

Westby is less Asian than neighboring Plentywood (1.2% Asian).

Westby's Hispanic Population

0 residents of Westby, or 0.0% of the population, identify as Hispanic. The share of Hispanic residents in Westby is slightly lower than in Montana overall, where 4.6% of the population is Hispanic. Westby ranks 126th statewide in terms of Hispanic residents as a share of the population, out of 497 places.

Since the 2020 Census, Westby's Hispanic population has declined by an estimated 100.0%. Hispanic residents' share of Westby's population has decreased from 4.2% to 0.0%.

Westby is less Hispanic than neighboring Grenora (1% Hispanic), and Plentywood (2.7% Hispanic).

Westby's Native American/Other Population

0 residents of Westby, or 0.0% of the population, identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other. The share of Native American/Other residents in Westby is lower than in Montana overall, where 5.9% of the population is Native American/Other. Westby ranks 370th statewide in terms of Native American/Other residents as a share of the population, out of 497 places.

Since the 2020 Census, Westby's Native American/Other population has grown from 0 to an estimated 0. Native American/Other residents' share of Westby's population has remained roughly unchanged at 0.0%.

Westby is less Native American/Other than neighboring Grenora (2.7% Native American/Other), Reserve (10.5% Native American/Other), and Plentywood (3.3% Native American/Other).

Westby's Multiracial Population

4 residents of Westby, or 1.4% of the population, identify as Multiracial. The share of Multiracial residents in Westby is slightly lower than in Montana overall, where 4.7% of the population is Multiracial. Westby ranks 264th statewide in terms of Multiracial residents as a share of the population, out of 497 places.

Since the 2020 Census, Westby's Multiracial population has declined by an estimated 42.9%. Multiracial residents' share of Westby's population has decreased from 4.2% to 1.4%.

Westby is more Multiracial than neighboring Antelope (0% Multiracial), and Reserve (0% Multiracial). Westby is less Multiracial than neighboring Grenora (7.6% Multiracial), Fortuna (14.6% Multiracial), and Plentywood (5.8% 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.