Population 12,888 · Census ACS 2020–24
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Population and households in ZIP 51031
Household size in ZIP 51031
| Period | ZIP 51031 | Iowa | U.S. |
|---|---|---|---|
| 2006–10 | 2.45 | 2.44 | 2.68 |
| 2010–14 | 2.36 | 2.45 | 2.73 |
| 2015–19 | 2.36 | 2.43 | 2.71 |
| 2020–24 | 2.45 | 2.43 | 2.65 |
| Change | −0.01 | −0.01 | −0.03 |
The average household in ZIP 51031 has 2.45 people, under the U.S. average of 2.65. The picture is much the same across Iowa. Households are largest in the southeast and smallest in the northwest.
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 51031
| Period | ZIP 51031 | Iowa | U.S. |
|---|---|---|---|
| 2006–10 | 41.1 | 38.8 | 37.7 |
| 2010–14 | 42.2 | 39.3 | 38.6 |
| 2015–19 | 39.9 | 39.7 | 39.6 |
| 2020–24 | 39.0 | 39.8 | 40.1 |
| Change | −2.1 | +1.0 | +2.3 |
At 39.0, the median age in ZIP 51031 is close to the national median of 40.1, so its age mix looks much like the country's. Since 2006–10, the median age has dropped from 41.1, even as the national median rose. The youngest areas are in the center, the oldest in the southeast.
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 51031
| Period | ZIP 51031 | Iowa | U.S. |
|---|---|---|---|
| 2006–10 | 6.5% | 9.5% | 12.3% |
| 2010–14 | 6.8% | 9.9% | 12.3% |
| 2015–19 | 12.1% | 10.0% | 11.6% |
| 2020–24 | 11.3% | 10.0% | 11.6% |
| Change | +4.8 pts | +0.6 pts | −0.6 pts |
Single parents head nearly one in eight households in ZIP 51031 (11.3%), close to the national share of 11.6%. Single parents are more common here than in Iowa overall (10.0%). The single-parent share is up 4.8 points from 2006–10, 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 51031
Renters in ZIP 51031
| Period | ZIP 51031 | Iowa | U.S. |
|---|---|---|---|
| 2006–10 | 23.2% | 26.8% | 33.3% |
| 2010–14 | 22.9% | 28.2% | 35.6% |
| 2015–19 | 26.3% | 28.9% | 36.0% |
| 2020–24 | 35.1% | 28.3% | 34.8% |
| Change | +11.9 pts | +1.5 pts | +1.5 pts |
Just over a third of households in ZIP 51031 rent their homes (35.1%), close to the national share of 34.8%. Renters make up a bigger share here than in Iowa as a whole (28.3%). Among homeowners, 51.4% have no mortgage at all, well above the national share of 39.8%. Since 2006–10, the renter share has risen 11.9 points, 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 ZIP 51031
| Period | ZIP 51031 | Iowa | U.S. |
|---|---|---|---|
| 2006–10 | 7.5% | 8.7% | 11.4% |
| 2010–14 | 7.1% | 8.6% | 11.4% |
| 2015–19 | 7.2% | 9.4% | 11.1% |
| 2020–24 | 6.0% | 8.8% | 9.6% |
| Change | −1.5 pts | +0.1 pts | −1.8 pts |
Fewer homes sit empty in ZIP 51031 than nationally: 6.0%, against 9.6% for the U.S. Vacancy is down 1.5 points from 2006–10, in line with the national trend.
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 51031
| Period | ZIP 51031 | Iowa | U.S. |
|---|---|---|---|
| 2006–10 | 1965 | 1965 | 1974 |
| 2010–14 | 1966 | 1967 | 1975 |
| 2015–19 | 1966 | 1969 | 1977 |
| 2020–24 | 1972 | 1971 | 1980 |
| Change | +7 | +6 | +6 |
Homes in ZIP 51031 run older than the national norm, with a median build year of 1972 against 1980. The median year built has moved up from 1965 in 2006–10, a sign of steady new building. Newer construction is concentrated in the south, 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 51031
| Period | ZIP 51031 | Iowa | U.S. |
|---|---|---|---|
| 2006–10 | $578 | $669 | $965 |
| 2010–14 | $584 | $732 | $1,040 |
| 2015–19 | $653 | $821 | $1,213 |
| 2020–24 | $954 | $1,020 | $1,571 |
| Change | +$376 | +$351 | +$606 |
Rent in ZIP 51031 runs $954 a month at the median, utilities included, well below the U.S. median of $1,571. Rents are up $376 a month from 2006–10, a 65% jump, roughly in step with the nation. The typical renter here spends 19.6% of household income on rent, comfortably under the 30% mark often used to define affordable rent, and a smaller share than renters pay nationally. The priciest rents are in the northwest; 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 51031
Bachelor's degrees in ZIP 51031
| Period | ZIP 51031 | Iowa | U.S. |
|---|---|---|---|
| 2006–10 | 20.1% | 26.5% | 28.4% |
| 2010–14 | 19.4% | 27.9% | 29.6% |
| 2015–19 | 24.8% | 29.3% | 32.1% |
| 2020–24 | 21.1% | 32.3% | 35.6% |
| Change | +1.1 pts | +5.8 pts | +7.2 pts |
College degrees are relatively uncommon in ZIP 51031: 21.1% of adults 25 and older hold a bachelor's or higher, well below the national share of 35.6%. Since 2006–10, the share with a degree has edged up 1.1 points, a smaller shift than 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 ZIP 51031
| Period | ZIP 51031 | Iowa | U.S. |
|---|---|---|---|
| 2006–10 | 90.6% | 90.4% | 84.9% |
| 2010–14 | 90.9% | 91.4% | 86.1% |
| 2015–19 | 93.7% | 92.1% | 87.7% |
| 2020–24 | 94.5% | 93.0% | 89.3% |
| Change | +3.8 pts | +2.7 pts | +4.3 pts |
High school completion is high in ZIP 51031: 94.5% 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 Iowa. Since 2006–10, the share with a diploma has risen 3.8 points, 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 51031
| Period | ZIP 51031 | Iowa | U.S. |
|---|---|---|---|
| 2006–10 | 2.8% | 5.2% | 8.1% |
| 2010–14 | 3.5% | 5.4% | 9.4% |
| 2015–19 | 1.9% | 3.7% | 5.6% |
| 2020–24 | 2.6% | 3.7% | 5.4% |
| Change | −0.2 pts | −1.5 pts | −2.7 pts |
The job market in ZIP 51031 has been strong: just 2.6% 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 51031 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 51031 | 2.45 | 39.0 | 11.3% | 35.1% | 6.0% | 1972 | $954 | 21.1% | 94.5% | 2.6% |
| ZIP 51008 | 2.77 | 29.8 | 13.4% | 13.4% | 2.4% | 1966 | $1,417 | 29.7% | 99.5% | 4.2% |
| ZIP 51045 | 2.95 | 37.7 | 11.7% | 17.2% | 2.6% | 1961 | $875 | 19.7% | 98.0% | 0.7% |
| ZIP 51038 | 2.59 | 43.6 | 5.9% | 14.4% | 10.9% | 1965 | $732 | 19.4% | 94.5% | 1.3% |
| ZIP 51050 | 2.69 | 45.0 | 7.6% | 16.3% | 7.7% | 1957 | $857 | 16.5% | 95.2% | 5.1% |
| ZIP 51024 | 2.59 | 47.5 | 4.9% | 15.7% | 3.1% | 1985 | $942 | 24.1% | 96.0% | 1.1% |
| ZIP 51035 | 2.31 | 47.1 | 4.5% | 16.8% | 8.6% | 1953 | $637 | 22.2% | 88.9% | 2.1% |
| ZIP 51001 | 2.23 | 44.4 | 10.4% | 24.9% | 5.3% | 1966 | $770 | 23.4% | 93.1% | 1.3% |
| ZIP 51062 | 2.35 | 52.1 | 1.2% | 18.7% | 2.7% | 1974 | $490 | 14.7% | 92.4% | 0.5% |
| ZIP 51014 | 2.23 | 46.8 | 5.7% | 17.3% | 5.8% | 1949 | $770 | 18.4% | 96.3% | 2.7% |
| ZIP 57025 | 2.47 | 38.2 | 8.5% | 17.2% | 7.5% | 1983 | $1,066 | 29.5% | 95.7% | 2.7% |
All figures 2020–24.
Zip codes with similar populations: 02458, MA · 36272, AL · 78076, TX · 85118, AZ · 27214, NC · 89143, NV · 92014, CA · 94065, CA · 20872, MD · 20678, MD
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 51031. 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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