Westby, MT Demographics

Population 298 · Census ACS 2020–24

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Westby, MT map of median age by neighborhood
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Population and households in Westby

Household size in Westby

Household size, people per household
PeriodWestbyMontanaU.S.
2006–102.002.412.68
2010–142.082.452.73
2015–192.302.442.71
2020–242.372.442.65
Change+0.38+0.03−0.03
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Households in Westby are small: just 2.37 people on average, compared with 2.65 nationally. That is typical of places where many people live alone or as couples, and fewer have children at home. Since 2006–10, household size has climbed from 2.00, but in a place this small, survey estimates can swing a lot from one release to the next.

Household size: the average number of people living in each occupied home. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B25010).

Median age in Westby

Median age, years
PeriodWestbyMontanaU.S.
2006–1051.939.937.7
2010–1446.440.838.6
2015–1941.641.539.6
2020–2449.141.540.1
Change−2.8+1.6+2.3
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Westby skews older: half of its residents are older than 49.1, well above the national median of 40.1. That usually means more empty nesters and retirees, and fewer young families.

Median age: the age that splits residents into two equal halves. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B01002).

Single-parent households in Westby

Single-parent households, % of households
PeriodWestbyMontanaU.S.
2006–106.3%9.4%12.3%
2010–143.9%9.8%12.3%
2015–191.4%8.7%11.6%
2020–242.1%8.8%11.6%
Change−4.3 pts−0.6 pts−0.6 pts
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Single parents head only 2.1% of households in Westby, well below the national share of 11.6%.

Single-parent households: households where one adult with no spouse present lives with children under 18. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B11003).

Housing in Westby

Renters in Westby

Renters, % of occupied homes
PeriodWestbyMontanaU.S.
2006–1024.8%31.0%33.3%
2010–1427.3%32.3%35.6%
2015–1922.5%31.9%36.0%
2020–2423.1%30.8%34.8%
Change−1.7 pts−0.1 pts+1.5 pts
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Only 23.1% of households in Westby rent their homes, far below the national share of 34.8%, so most residents are owners who tend to stay put. Among homeowners, 78.4% have no mortgage at all, well above the national share of 39.8%.

Renters: occupied homes that are rented rather than owned. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B25003).

Vacant homes in Westby

Vacant homes, % of all homes
PeriodWestbyMontanaU.S.
2006–1027.0%13.2%11.4%
2010–1431.2%13.9%11.4%
2015–1929.4%14.1%11.1%
2020–2432.6%12.2%9.6%
Change+5.6 pts−0.9 pts−1.8 pts
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Vacancy is high in Westby: 32.6% of homes are empty, far above the national rate of 9.6%. In resort and lake areas that usually means seasonal and vacation homes; elsewhere it can point to weak demand.

Vacant homes: homes with no one living in them, including vacation homes and homes for sale or rent. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B25002).

Age of homes in Westby

Age of homes, median year built
PeriodWestbyMontanaU.S.
2006–10195719741974
2010–14195819771975
2015–19196319781977
2020–24196419821980
Change+7+7+6
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Westby is a place of older homes: half were built before 1964, while the national median is 1980. That means established neighborhoods, and more houses that may need updating.

Age of homes: the year that splits the housing stock into older and newer halves. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B25035).

Rent in Westby

Rent, per month
PeriodWestbyMontanaU.S.
2006–10$394$703$965
2010–14$585$775$1,040
2015–19$504$870$1,213
2020–24$981$1,189$1,571
Change+$587+$487+$606
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Rent in Westby runs $981 a month at the median, utilities included, well below the U.S. median of $1,571. Rent takes 13.6% of the typical renter's income, comfortably under the 30% mark often used to define affordable rent.

Rent: monthly rent plus the utilities renters pay themselves. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B25064).

Education in Westby

Bachelor's degrees in Westby

Bachelor's degrees, % of adults 25+
PeriodWestbyMontanaU.S.
2006–1013.8%28.7%28.4%
2010–1421.9%29.8%29.6%
2015–1924.8%32.2%32.1%
2020–2423.4%35.3%35.6%
Change+9.6 pts+6.6 pts+7.2 pts
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Fewer adults in Westby have a four-year degree than in the country as a whole: 23.4%, against 35.6% nationally.

Bachelor's degrees: adults 25 and older with a bachelor's degree or higher. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B15003).

High school graduates in Westby

High school graduates, % of adults 25+
PeriodWestbyMontanaU.S.
2006–1090.9%91.2%84.9%
2010–1492.5%92.6%86.1%
2015–1995.1%93.6%87.7%
2020–2494.3%94.6%89.3%
Change+3.4 pts+3.4 pts+4.3 pts
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High school completion is high in Westby: 94.3% of adults 25 and older have a diploma or equivalent, well above the national rate of 89.3%. The picture is much the same across Montana.

High school graduates: adults 25 and older with a high school diploma, GED or more. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B15003).

Jobs in Westby

Unemployment, % of the labor force
PeriodWestbyMontanaU.S.
2006–102.0%5.7%8.1%
2010–140.9%6.9%9.4%
2015–191.9%4.2%5.6%
2020–241.6%3.7%5.4%
Change−0.5 pts−2.0 pts−2.7 pts
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The job market in Westby has been strong: just 1.6% of the labor force was out of work and looking, well below the national rate of 5.4%. Because the Census pools five years of responses (2020–24), these rates smooth over short swings and lag the current job market.

Unemployment: people looking for work as a share of everyone working or looking. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B23025).

Westby compared with nearby cities

CityHousehold sizeMedian ageSingle parentsRentersVacant homesMedian year builtMedian rentBachelor's degreeHigh school diplomaUnemployment
Westby2.3749.12.1%23.1%32.6%1964$98123.4%94.3%1.6%
Antelope2.8036.48.3%27.2%23.9%1966$75838.0%98.2%0.5%
Grenora2.5134.56.3%25.5%32.4%1971$1,29534.0%97.3%3.7%
Stoneview2.3638.85.7%21.9%31.7%1961$1,22337.6%96.0%3.4%
Dagmar2.3749.42.1%23.9%33.3%1964$99423.6%94.6%1.2%
Plentywood2.3646.04.2%30.7%25.3%1962$77825.6%87.6%2.6%
Fortuna2.0947.84.8%20.3%29.5%1950$1,05837.3%93.1%2.6%
Raymond2.7337.38.1%30.0%22.6%1965$71836.6%95.1%0.9%
Marmon2.3838.15.8%22.4%31.8%1962$1,23537.0%96.2%3.4%
Zahl2.5034.76.2%25.2%32.4%1970$1,29134.2%97.2%3.7%
Reserve2.4946.23.8%24.5%30.9%1965$93026.9%95.2%1.2%

All figures 2020–24.

Cities with similar populations: Gans, PA · Van Vleet, MS · Valley, WI · Valley Ford, CA · Valeda, KS · Graham, MS · Glover Hill, TN · Gifford, PA · Gholson, MS · Geiger, AL

About these numbers

Every figure on this page is a BestNeighborhood calculation from the Census Bureau's American Community Survey (ACS), built up from the Census block groups that make up Westby. Each ACS 5-year release pools five years of responses; this page shows the last 15 releases, 2006–10 through 2020–24. Neighboring releases share four of their five years, so they move gradually and small changes between them are within the survey's margin of error; in small places the lines can jump from one release to the next for the same reason. The maps show the same measures for each neighborhood, ranked against the whole country.

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