Population 18,863 · Census ACS 2020–24
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Population and households in ZIP 53121
Household size in ZIP 53121
| Period | ZIP 53121 | Wisconsin | U.S. |
|---|---|---|---|
| 2006–10 | 2.64 | 2.45 | 2.68 |
| 2010–14 | 2.58 | 2.47 | 2.73 |
| 2015–19 | 2.45 | 2.43 | 2.71 |
| 2020–24 | 2.38 | 2.40 | 2.65 |
| Change | −0.26 | −0.06 | −0.03 |
ZIP 53121 is a place of small households, averaging 2.38 people against 2.65 for the U.S., which points to many singles, couples and roommates and relatively few children. Since 2006–10, household size has dropped from 2.64, a much bigger shift than nationally. The biggest households, usually families with children, are concentrated in the west.
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 ZIP 53121
| Period | ZIP 53121 | Wisconsin | U.S. |
|---|---|---|---|
| 2006–10 | 38.3 | 38.8 | 37.7 |
| 2010–14 | 38.9 | 39.9 | 38.6 |
| 2015–19 | 42.9 | 40.9 | 39.6 |
| 2020–24 | 43.9 | 41.4 | 40.1 |
| Change | +5.6 | +2.6 | +2.3 |
ZIP 53121 skews older than the country: its median age is 43.9, against 40.1 nationally. The median age has climbed from 38.3 in 2006–10, as it has nationally. Residents skew youngest in the center and oldest in the north.
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 ZIP 53121
| Period | ZIP 53121 | Wisconsin | U.S. |
|---|---|---|---|
| 2006–10 | 8.3% | 10.4% | 12.3% |
| 2010–14 | 11.8% | 10.5% | 12.3% |
| 2015–19 | 9.0% | 10.0% | 11.6% |
| 2020–24 | 9.2% | 9.8% | 11.6% |
| Change | +0.9 pts | −0.6 pts | −0.6 pts |
Single-parent households are less common in ZIP 53121 than nationally: 9.2%, against 11.6%. The picture is much the same across Wisconsin. Since 2006–10, the single-parent share has edged up 0.9 points, even as the national share fell.
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 ZIP 53121
Renters in ZIP 53121
| Period | ZIP 53121 | Wisconsin | U.S. |
|---|---|---|---|
| 2006–10 | 24.5% | 30.5% | 33.3% |
| 2010–14 | 29.1% | 32.3% | 35.6% |
| 2015–19 | 30.1% | 33.0% | 36.0% |
| 2020–24 | 27.4% | 32.2% | 34.8% |
| Change | +2.9 pts | +1.6 pts | +1.5 pts |
More than a quarter of households in ZIP 53121 rent their homes (27.4%), below the national share of 34.8%; the rest own. Just over three in ten owners (31.4%) have paid off their mortgages, below the national share of 39.8%. Rentals cluster in the southeast; owners are most common in the north. The renter share has risen 2.9 points since 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 ZIP 53121
| Period | ZIP 53121 | Wisconsin | U.S. |
|---|---|---|---|
| 2006–10 | 15.1% | 10.5% | 11.4% |
| 2010–14 | 10.8% | 10.6% | 11.4% |
| 2015–19 | 11.0% | 10.1% | 11.1% |
| 2020–24 | 7.9% | 9.2% | 9.6% |
| Change | −7.2 pts | −1.3 pts | −1.8 pts |
Vacancy is on the low side in ZIP 53121: 7.9% of homes sit empty, against 9.6% nationally, which points to steady demand for housing. The picture is much the same across Wisconsin. Since 2006–10, vacancy has fallen 7.2 points, a much bigger shift than nationally.
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 ZIP 53121
| Period | ZIP 53121 | Wisconsin | U.S. |
|---|---|---|---|
| 2006–10 | 1980 | 1970 | 1974 |
| 2010–14 | 1982 | 1971 | 1975 |
| 2015–19 | 1979 | 1972 | 1977 |
| 2020–24 | 1980 | 1974 | 1980 |
| Change | −1 | +5 | +6 |
Homes in ZIP 53121 are the same age as the nation's housing: the median home was built in 1980. Homes here are newer than in Wisconsin overall, where the median home dates to 1974.
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 ZIP 53121
| Period | ZIP 53121 | Wisconsin | U.S. |
|---|---|---|---|
| 2006–10 | $805 | $758 | $965 |
| 2010–14 | $932 | $821 | $1,040 |
| 2015–19 | $992 | $904 | $1,213 |
| 2020–24 | $1,153 | $1,139 | $1,571 |
| Change | +$348 | +$380 | +$606 |
Rent in ZIP 53121 runs $1,153 a month at the median, utilities included, well below the U.S. median of $1,571. Rents are up $348 a month from 2006–10, a 43% rise, a slower climb than the nation's. Rent takes 26.6% of the typical renter's income, comfortably under the 30% mark often used to define affordable rent. The priciest rents are in the center; the most affordable are in the southeast.
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 ZIP 53121
Bachelor's degrees in ZIP 53121
| Period | ZIP 53121 | Wisconsin | U.S. |
|---|---|---|---|
| 2006–10 | 26.1% | 26.5% | 28.4% |
| 2010–14 | 23.7% | 28.0% | 29.6% |
| 2015–19 | 29.2% | 30.4% | 32.1% |
| 2020–24 | 31.8% | 33.6% | 35.6% |
| Change | +5.7 pts | +7.0 pts | +7.2 pts |
Nearly a third of adults 25 and older in ZIP 53121 (31.8%) have a bachelor's degree or higher, a little below the national share of 35.6%. The share with a degree has risen 5.7 points since 2006–10, in line with the national trend. College graduates are most concentrated in the north and least in the southeast.
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 ZIP 53121
| Period | ZIP 53121 | Wisconsin | U.S. |
|---|---|---|---|
| 2006–10 | 91.0% | 89.5% | 84.9% |
| 2010–14 | 91.9% | 90.7% | 86.1% |
| 2015–19 | 91.5% | 92.1% | 87.7% |
| 2020–24 | 94.8% | 93.3% | 89.3% |
| Change | +3.8 pts | +3.8 pts | +4.3 pts |
High school completion is high in ZIP 53121: 94.8% of adults 25 and older have a diploma or equivalent, well above the national rate of 89.3%. Wisconsin as a whole looks much the same. The share with a diploma is up 3.8 points from 2006–10, 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 ZIP 53121
| Period | ZIP 53121 | Wisconsin | U.S. |
|---|---|---|---|
| 2006–10 | 7.3% | 6.7% | 8.1% |
| 2010–14 | 7.8% | 7.3% | 9.4% |
| 2015–19 | 2.5% | 3.7% | 5.6% |
| 2020–24 | 1.5% | 3.3% | 5.4% |
| Change | −5.8 pts | −3.4 pts | −2.7 pts |
Unemployment in ZIP 53121 has been low: just 1.5% of the labor force was out of work and looking, well below the national rate of 5.4%. Since 2006–10, unemployment has fallen 5.8 points, as it has nationally. Each figure pools five years of surveys (2020–24), so it describes that whole stretch rather than today's 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).
ZIP 53121 compared with nearby ZIP codes
| ZIP code | Household size | Median age | Single parents | Renters | Vacant homes | Median year built | Median rent | Bachelor's degree | High school diploma | Unemployment |
|---|---|---|---|---|---|---|---|---|---|---|
| ZIP 53121 | 2.38 | 43.9 | 9.2% | 27.4% | 7.9% | 1980 | $1,153 | 31.8% | 94.8% | 1.5% |
| ZIP 53115 | 2.30 | 44.1 | 6.7% | 30.6% | 15.3% | 1971 | $1,055 | 24.9% | 90.5% | 3.3% |
| ZIP 53176 | 1.60 | 52.7 | 3.4% | 41.8% | 2.4% | 1974 | $1,115 | 25.0% | 75.4% | 0.0% |
| ZIP 53191 | 2.38 | 47.6 | 8.3% | 20.7% | 35.9% | 1975 | $1,069 | 46.2% | 98.6% | 2.1% |
| ZIP 53147 | 2.24 | 47.1 | 10.1% | 31.3% | 24.3% | 1978 | $1,436 | 38.5% | 93.5% | 3.4% |
| ZIP 53120 | 2.45 | 44.7 | 9.1% | 21.0% | 10.6% | 1980 | $1,275 | 35.0% | 95.7% | 1.6% |
| ZIP 53125 | 2.19 | 56.8 | 4.2% | 15.8% | 54.6% | 1971 | $1,801 | 62.3% | 97.3% | 3.0% |
| ZIP 53114 | 2.53 | 42.3 | 9.8% | 19.1% | 6.8% | 1973 | $933 | 19.6% | 88.7% | 4.2% |
| ZIP 53184 | 2.54 | 41.5 | 10.4% | 34.7% | 11.9% | 1980 | $972 | 28.6% | 86.5% | 3.0% |
| ZIP 53195 | 2.44 | 40.8 | 15.7% | 18.7% | 18.3% | 1975 | $850 | 38.8% | 91.7% | 1.6% |
| ZIP 53105 | 2.46 | 44.6 | 10.2% | 25.9% | 10.9% | 1975 | $1,209 | 28.9% | 94.7% | 3.1% |
All figures 2020–24.
Zip codes with similar populations: 10509, NY · 22206, VA · 20724, MD · 20187, VA · 19440, PA · 19027, PA · 14468, NY · 12189, NY · 11428, NY · 11021, NY
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 ZIP 53121. 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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