51401, IA Demographics

Population 11,984 · Census ACS 2020–24

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51401, IA map of median age by neighborhood
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Population and households in ZIP 51401

Household size in ZIP 51401

Household size, people per household
PeriodZIP 51401IowaU.S.
2006–102.262.442.68
2010–142.332.452.73
2015–192.252.432.71
2020–242.212.432.65
Change−0.04−0.01−0.03
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ZIP 51401 is a place of small households, averaging 2.21 people against 2.65 for the U.S., which points to many singles, couples and roommates and relatively few children. Household size has edged down from 2.26 in 2006–10, mirroring the country. The biggest households, usually families with children, are concentrated in the southwest.

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 51401

Median age, years
PeriodZIP 51401IowaU.S.
2006–1043.338.837.7
2010–1442.539.338.6
2015–1941.639.739.6
2020–2443.339.840.1
Change+0.0+1.0+2.3
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The median resident of ZIP 51401 is 43.3 years old, older than the national median of 40.1. The youngest areas are in the southwest, the oldest in the center.

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 51401

Single-parent households, % of households
PeriodZIP 51401IowaU.S.
2006–1013.0%9.5%12.3%
2010–149.8%9.9%12.3%
2015–199.5%10.0%11.6%
2020–247.8%10.0%11.6%
Change−5.2 pts+0.6 pts−0.6 pts
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Single-parent households are relatively rare in ZIP 51401: 7.8% of households, against 11.6% nationally. The single-parent share is down 5.2 points from 2006–10, a much bigger shift than 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 ZIP 51401

Renters in ZIP 51401

Renters, % of occupied homes
PeriodZIP 51401IowaU.S.
2006–1029.2%26.8%33.3%
2010–1426.7%28.2%35.6%
2015–1928.3%28.9%36.0%
2020–2426.7%28.3%34.8%
Change−2.5 pts+1.5 pts+1.5 pts
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Just over a quarter of households in ZIP 51401 rent their homes (26.7%), below the national share of 34.8%; the rest own. Among homeowners, 50.4% have no mortgage at all, well above the national share of 39.8%. Rentals cluster in the east; owners are most common in the northwest. The renter share has fallen 2.5 points since 2006–10, even as the national share rose.

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 51401

Vacant homes, % of all homes
PeriodZIP 51401IowaU.S.
2006–108.7%8.7%11.4%
2010–1411.1%8.6%11.4%
2015–199.9%9.4%11.1%
2020–249.1%8.8%9.6%
Change+0.4 pts+0.1 pts−1.8 pts
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About as many homes sit empty in ZIP 51401 as nationally: 9.1%, against 9.6%. Vacancy is little changed from 2006–10, while 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 ZIP 51401

Age of homes, median year built
PeriodZIP 51401IowaU.S.
2006–10196419651974
2010–14196419671975
2015–19196819691977
2020–24196719711980
Change+3+6+6
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The housing in ZIP 51401 is old by national standards: the median home dates to 1967, against 1980 for the U.S., so buyers will find more older houses, some of them due for updates. Newer construction is concentrated in the east, while the northwest has the oldest housing.

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 51401

Rent, per month
PeriodZIP 51401IowaU.S.
2006–10$482$669$965
2010–14$524$732$1,040
2015–19$637$821$1,213
2020–24$859$1,020$1,571
Change+$377+$351+$606
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A typical rental in ZIP 51401 costs $859 a month with utilities, well below the national median of $1,571. Rent has climbed $377 a month since 2006–10, up 78%, faster than rents rose nationally. Rent takes 24.2% of the typical renter's income, comfortably under the 30% mark often used to define affordable rent. The priciest rents are in the northwest; the most affordable are in the east.

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 51401

Bachelor's degrees in ZIP 51401

Bachelor's degrees, % of adults 25+
PeriodZIP 51401IowaU.S.
2006–1020.3%26.5%28.4%
2010–1419.3%27.9%29.6%
2015–1925.0%29.3%32.1%
2020–2426.5%32.3%35.6%
Change+6.2 pts+5.8 pts+7.2 pts
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Just over a quarter of adults 25 and older in ZIP 51401 (26.5%) have a bachelor's degree or higher, below the national share of 35.6%. The share with a degree has risen 6.2 points since 2006–10, mirroring the country.

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 51401

High school graduates, % of adults 25+
PeriodZIP 51401IowaU.S.
2006–1088.6%90.4%84.9%
2010–1490.9%91.4%86.1%
2015–1992.9%92.1%87.7%
2020–2495.7%93.0%89.3%
Change+7.0 pts+2.7 pts+4.3 pts
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High school completion is high in ZIP 51401: 95.7% 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 7.0 points from 2006–10, as it has nationally.

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 51401

Unemployment, % of the labor force
PeriodZIP 51401IowaU.S.
2006–102.4%5.2%8.1%
2010–141.0%5.4%9.4%
2015–192.1%3.7%5.6%
2020–242.0%3.7%5.4%
Change−0.3 pts−1.5 pts−2.7 pts
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Unemployment in ZIP 51401 has been low: just 2.0% of the labor force was out of work and looking, well below the national rate of 5.4%. 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 51401 compared with nearby ZIP codes

ZIP codeHousehold sizeMedian ageSingle parentsRentersVacant homesMedian year builtMedian rentBachelor's degreeHigh school diplomaUnemployment
ZIP 514012.2143.37.8%26.7%9.1%1967$85926.5%95.7%2.0%
ZIP 514522.8141.13.1%14.8%18.2%1938$1,06016.0%96.1%0.6%
ZIP 514442.5435.212.4%19.8%8.7%1963$82419.7%96.3%1.1%
ZIP 514432.6641.05.9%18.7%5.8%1952$58623.3%95.4%2.2%
ZIP 514302.5435.312.3%19.7%8.8%1963$82619.6%96.3%1.1%
ZIP 514362.5536.710.4%19.0%10.2%1960$84419.9%96.1%1.4%
ZIP 514632.2552.01.6%3.2%3.4%1953$72112.2%92.1%0.3%
ZIP 514402.6337.812.2%21.2%10.5%1946$78019.6%91.7%1.6%
ZIP 514512.8141.13.1%14.8%18.2%1938$1,06016.0%96.1%0.6%
ZIP 514592.6541.06.2%19.0%4.5%1953$53724.0%95.4%2.4%
ZIP 514672.7439.76.3%14.1%10.8%1955$68221.8%91.3%1.8%

All figures 2020–24.

Zip codes with similar populations: 11577, NY · 45309, OH · 67301, KS · 64503, MO · 63857, MO · 62948, IL · 61548, IL · 60152, IL · 59044, MT · 56093, MN

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 51401. 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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