Miller County, MO Demographics

Population 25,269 · Census ACS 2020–24

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Median age by neighborhoodHistory and comparison ↓︎
Miller County, MO map of median age by neighborhood
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Population and households in Miller County

Household size in Miller County

Household size, people per household
PeriodMiller CountyMissouriU.S.
2006–102.352.492.68
2010–142.562.522.73
2015–192.472.502.71
2020–242.622.492.65
Change+0.27−0.00−0.03
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Households in Miller County average 2.62 people, about the same as the country as a whole (2.65). The typical household here is bigger than in Missouri overall, where it has 2.49 people. Household size has climbed from 2.35 in 2006–10, even as the national average fell.

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 Miller County

Median age, years
PeriodMiller CountyMissouriU.S.
2006–1040.938.437.7
2010–1441.639.238.6
2015–1940.940.039.6
2020–2441.640.140.1
Change+0.8+1.7+2.3
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The median resident of Miller County is 41.6 years old, a bit older than the national median of 40.1. Since 2006–10, the median age has crept up from 40.9, a smaller shift than nationally. Residents skew youngest in the east and oldest in the west.

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 Miller County

Single-parent households, % of households
PeriodMiller CountyMissouriU.S.
2006–1011.2%11.3%12.3%
2010–1412.5%11.4%12.3%
2015–1911.1%10.9%11.6%
2020–249.9%11.0%11.6%
Change−1.3 pts−0.3 pts−0.6 pts
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Single parents head about one in ten households in Miller County (9.9%), a little below the national share of 11.6%. The single-parent share has edged down 1.3 points since 2006–10, as it has nationally.

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 Miller County

Renters in Miller County

Renters, % of occupied homes
PeriodMiller CountyMissouriU.S.
2006–1024.7%30.0%33.3%
2010–1422.1%32.1%35.6%
2015–1925.8%33.2%36.0%
2020–2426.1%31.9%34.8%
Change+1.4 pts+1.9 pts+1.5 pts
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Most households in Miller County own their homes; 26.1% rent, below the national share of 34.8%. Nearly half of owners (47.9%) have paid off their mortgages, above the national share of 39.8%. Rentals cluster in the southwest; owners are most common in the east. The renter share is up 1.4 points from 2006–10, as it has nationally.

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 Miller County

Vacant homes, % of all homes
PeriodMiller CountyMissouriU.S.
2006–1015.7%11.6%11.4%
2010–1420.1%12.0%11.4%
2015–1918.2%12.2%11.1%
2020–2417.1%10.5%9.6%
Change+1.4 pts−1.1 pts−1.8 pts
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Vacancy is high in Miller County: 17.1% 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. Since 2006–10, vacancy has edged up 1.4 points, even as the national rate fell.

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 Miller County

Age of homes, median year built
PeriodMiller CountyMissouriU.S.
2006–10197719741974
2010–14198119751975
2015–19198019761977
2020–24198619781980
Change+9+4+6
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The housing in Miller County is younger than the country's: half of it was built after 1986, against 1980 nationally. The median year built has moved up from 1977 in 2006–10, a sign of steady new building. The newest homes are mostly in the center, the oldest in the northwest.

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 Miller County

Rent, per month
PeriodMiller CountyMissouriU.S.
2006–10$537$740$965
2010–14$603$816$1,040
2015–19$668$899$1,213
2020–24$751$1,122$1,571
Change+$214+$383+$606
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Rent in Miller County runs $751 a month at the median, utilities included, well below the U.S. median of $1,571. Rent has climbed $214 a month since 2006–10, up 40%, a slower climb than the nation's. Rent takes 23.0% of the typical renter's income, comfortably under the 30% mark often used to define affordable rent. Renters on a budget will find the lowest rents in the southeast; the highest are in the west.

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 Miller County

Bachelor's degrees in Miller County

Bachelor's degrees, % of adults 25+
PeriodMiller CountyMissouriU.S.
2006–1012.6%26.0%28.4%
2010–1415.9%27.3%29.6%
2015–1919.2%29.6%32.1%
2020–2419.7%32.6%35.6%
Change+7.2 pts+6.6 pts+7.2 pts
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Fewer adults in Miller County have a four-year degree than in the country as a whole: 19.7%, against 35.6% nationally. Since 2006–10, the share with a degree has risen 7.2 points, in line with the national trend. College graduates are most concentrated in the east and least in the south.

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 Miller County

High school graduates, % of adults 25+
PeriodMiller CountyMissouriU.S.
2006–1083.3%86.8%84.9%
2010–1484.1%88.3%86.1%
2015–1987.1%90.0%87.7%
2020–2488.3%91.8%89.3%
Change+5.0 pts+5.1 pts+4.3 pts
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About as many adults in Miller County have finished high school as nationally: 88.3%, against 89.3%. The rate is lower than in Missouri overall (91.8%). Since 2006–10, the share with a diploma has risen 5.0 points, in line with the national trend.

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 Miller County

Unemployment, % of the labor force
PeriodMiller CountyMissouriU.S.
2006–107.8%7.4%8.1%
2010–1410.3%8.4%9.4%
2015–194.9%4.6%5.6%
2020–245.2%4.1%5.4%
Change−2.6 pts−3.3 pts−2.7 pts
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At 5.2%, unemployment in Miller County is close to the national rate of 5.4%. The rate is higher than in Missouri overall (4.1%). Unemployment has fallen 2.6 points since 2006–10, as it has nationally.

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).

Miller County compared with nearby counties

CountyHousehold sizeMedian ageSingle parentsRentersVacant homesMedian year builtMedian rentBachelor's degreeHigh school diplomaUnemployment
Miller County2.6241.69.9%26.1%17.1%1986$75119.7%88.3%5.2%
Morgan County2.5344.45.0%20.3%29.9%1982$79416.3%79.6%3.2%
Maries County2.5442.86.6%21.7%17.4%1985$59515.0%88.3%4.6%
Benton County2.4052.08.3%16.2%30.3%1984$73114.8%88.8%3.9%
Henry County2.4643.212.5%25.0%14.4%1975$81916.6%90.4%4.3%
Bates County2.6141.79.1%25.1%14.9%1977$80915.0%90.2%6.4%
Jefferson County2.6241.011.1%17.8%6.9%1987$1,08925.1%92.2%3.2%
Linn County2.2944.87.5%18.9%16.0%1981$73922.9%94.5%4.2%
Monroe County2.5343.66.8%15.3%6.8%1987$1,04838.4%96.0%1.9%
Anderson County2.4641.99.9%21.1%10.7%1963$86213.3%89.2%4.5%
Washington County2.3245.410.0%15.9%9.4%1972$84023.4%93.1%4.3%

All figures 2020–24.

Counties with similar populations: Hughes County, SD · Holmes County, MS · Hood River County, OR · Hopewell City, VA · Hormigueros Municipio, PR · Hot Spring County, AR · Yancey County, NC · Houston County, TX · Hubbard County, MN · Holmes County, FL

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 Miller County. 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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