Ozaukee County, WI Demographics

Population 92,966 · Census ACS 2020–24

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

Household size in Ozaukee County

Household size, people per household
PeriodOzaukee CountyMilwaukee areaWisconsinU.S.
2006–102.542.512.452.68
2010–142.552.532.472.73
2015–192.462.512.432.71
2020–242.432.452.402.65
Change−0.10−0.06−0.06−0.03
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Households in Ozaukee County run small, averaging 2.43 people against 2.65 nationally, which usually means more singles and couples and fewer children. Household size has dropped from 2.54 in 2006–10, a much bigger shift than nationally. Households are largest in the southeast and smallest in the center.

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 Ozaukee County

Median age, years
PeriodOzaukee CountyMilwaukee areaWisconsinU.S.
2006–1042.137.838.837.7
2010–1443.738.739.938.6
2015–1943.539.640.939.6
2020–2444.539.841.440.1
Change+2.4+1.9+2.6+2.3
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With a median age of 44.5, Ozaukee County is noticeably older than the country as a whole (40.1), an age mix that tilts toward empty nesters and retirees. The median age has climbed from 42.1 in 2006–10, mirroring the country. Residents skew youngest in the east and oldest in the south.

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 Ozaukee County

Single-parent households, % of households
PeriodOzaukee CountyMilwaukee areaWisconsinU.S.
2006–106.5%13.0%10.4%12.3%
2010–146.0%12.8%10.5%12.3%
2015–197.6%12.2%10.0%11.6%
2020–247.1%12.2%9.8%11.6%
Change+0.6 pts−0.8 pts−0.6 pts−0.6 pts
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Single parents head only 7.1% of households in Ozaukee County, well below the national share of 11.6%. The single-parent share has edged up 0.6 points since 2006–10, even as the national share fell. Ozaukee County has a lower share of single-parent households than at least four in five Wisconsin counties.

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 Ozaukee County

Renters in Ozaukee County

Renters, % of occupied homes
PeriodOzaukee CountyMilwaukee areaWisconsinU.S.
2006–1021.7%37.2%30.5%33.3%
2010–1423.1%39.1%32.3%35.6%
2015–1924.1%39.9%33.0%36.0%
2020–2427.1%39.6%32.2%34.8%
Change+5.5 pts+2.4 pts+1.6 pts+1.5 pts
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Most households in Ozaukee County own their homes; 27.1% rent, below the national share of 34.8%. Among homeowners, 35.4% have no mortgage at all, below the national share of 39.8%. Renting is most common in the east and least common in the south. The renter share has risen 5.5 points since 2006–10, a much bigger shift than 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 Ozaukee County

Vacant homes, % of all homes
PeriodOzaukee CountyMilwaukee areaWisconsinU.S.
2006–107.3%8.4%10.5%11.4%
2010–146.5%8.1%10.6%11.4%
2015–195.2%7.8%10.1%11.1%
2020–245.2%7.2%9.2%9.6%
Change−2.1 pts−1.2 pts−1.3 pts−1.8 pts
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Only 5.2% of homes in Ozaukee County are vacant, far below the national rate of 9.6%, which usually means strong demand for housing. Since 2006–10, vacancy has fallen 2.1 points, in line with the national trend. Ozaukee County has a lower vacancy rate than the great majority of Wisconsin counties.

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 Ozaukee County

Age of homes, median year built
PeriodOzaukee CountyMilwaukee areaWisconsinU.S.
2006–101976196419701974
2010–141976196519711975
2015–191977196619721977
2020–241978196819741980
Change+3+4+5+6
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The typical home in Ozaukee County was built around 1978, about the same vintage as the country's housing overall (1980). Homes here are newer than in the Milwaukee area as a whole, where the median home dates to 1968.

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 Ozaukee County

Rent, per month
PeriodOzaukee CountyMilwaukee areaWisconsinU.S.
2006–10$884$849$758$965
2010–14$940$928$821$1,040
2015–19$1,139$1,022$904$1,213
2020–24$1,567$1,290$1,139$1,571
Change+$683+$441+$380+$606
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A typical rental in Ozaukee County costs $1,567 a month with utilities, close to the national median of $1,571. Rents here are higher than in the Milwaukee area as a whole ($1,290). Rents are up $683 a month from 2006–10, a 77% jump, faster than rents rose nationally. No other Wisconsin county has higher rents.

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 Ozaukee County

Bachelor's degrees in Ozaukee County

Bachelor's degrees, % of adults 25+
PeriodOzaukee CountyMilwaukee areaWisconsinU.S.
2006–1043.3%31.0%26.5%28.4%
2010–1446.7%32.9%28.0%29.6%
2015–1949.2%35.4%30.4%32.1%
2020–2451.4%39.2%33.6%35.6%
Change+8.1 pts+8.1 pts+7.0 pts+7.2 pts
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College graduates are unusually common in Ozaukee County: 51.4% of adults 25 and older have a bachelor's degree or higher, against 35.6% nationally. Education tends to track local incomes and the kinds of jobs nearby. Since 2006–10, the share with a degree has risen 8.1 points, in line with the national trend. Only one other Wisconsin county has a higher share of college graduates.

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 Ozaukee County

High school graduates, % of adults 25+
PeriodOzaukee CountyMilwaukee areaWisconsinU.S.
2006–1095.2%88.5%89.5%84.9%
2010–1496.2%89.5%90.7%86.1%
2015–1996.9%91.0%92.1%87.7%
2020–2497.8%92.2%93.3%89.3%
Change+2.6 pts+3.7 pts+3.8 pts+4.3 pts
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Finishing high school is nearly universal in Ozaukee County: 97.8% of adults 25 and older have a diploma or equivalent, well above the national rate of 89.3%. The share with a diploma is up 2.6 points from 2006–10, in line with the national trend. Ozaukee County has the highest share of high school graduates of any Wisconsin county.

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 Ozaukee County

Unemployment, % of the labor force
PeriodOzaukee CountyMilwaukee areaWisconsinU.S.
2006–104.6%7.7%6.7%8.1%
2010–145.1%8.7%7.3%9.4%
2015–192.6%4.5%3.7%5.6%
2020–242.7%4.0%3.3%5.4%
Change−1.9 pts−3.7 pts−3.4 pts−2.7 pts
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Unemployment in Ozaukee County has been low: just 2.7% of the labor force was out of work and looking, well below the national rate of 5.4%. Since 2006–10, unemployment has fallen 1.9 points, mirroring the country. 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).

Ozaukee County compared with nearby counties

CountyHousehold sizeMedian ageSingle parentsRentersVacant homesMedian year builtMedian rentBachelor's degreeHigh school diplomaUnemployment
Ozaukee County2.4344.57.1%27.1%5.2%1978$1,56751.4%97.8%2.7%
Washington County2.4444.67.8%21.9%4.7%1984$1,27835.4%95.8%2.6%
Dodge County2.3943.68.4%28.7%7.5%1969$1,00920.3%92.8%3.4%
Columbia County2.3643.69.5%23.3%9.8%1975$1,01925.9%94.0%3.0%
Muskegon County2.5640.815.4%21.9%10.5%1969$1,09321.1%92.1%7.2%
Sauk County2.3842.48.3%27.6%10.2%1979$1,01327.2%92.6%2.2%
Newaygo County2.5842.810.1%13.5%18.4%1978$92917.7%89.3%4.4%
Richland County2.3446.57.4%26.1%14.9%1969$91121.1%92.7%3.4%
Montcalm County2.7740.69.2%16.9%11.5%1977$90915.7%88.2%4.8%
Gratiot County2.4540.211.6%21.1%8.4%1966$89120.3%92.6%4.1%
Allamakee County2.3942.76.7%20.4%15.2%1968$74422.0%92.0%2.6%

All figures 2020–24.

Counties with similar populations: Buchanan County, MO · Cape May County, NJ · Cabell County, WV · Burleigh County, ND · Cleveland County, NC · Bowie County, TX · Benton County, OR · Bastrop County, TX · Bartholomew County, IN · Barrow County, GA

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 Ozaukee 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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