Population 953 · Census ACS 2020–24
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Population and households in ZIP 51331
Household size in ZIP 51331
| Period | ZIP 51331 | Iowa | U.S. |
|---|---|---|---|
| 2006–10 | 1.73 | 2.44 | 2.68 |
| 2010–14 | 2.09 | 2.45 | 2.73 |
| 2015–19 | 2.09 | 2.43 | 2.71 |
| 2020–24 | 1.85 | 2.43 | 2.65 |
| Change | +0.12 | −0.01 | −0.03 |
ZIP 51331 is a place of small households, averaging 1.85 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 climbed from 1.73, but in a place this small, much of that may be survey noise rather than real change.
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 51331
| Period | ZIP 51331 | Iowa | U.S. |
|---|---|---|---|
| 2006–10 | 51.7 | 38.8 | 37.7 |
| 2010–14 | 39.0 | 39.3 | 38.6 |
| 2015–19 | 48.5 | 39.7 | 39.6 |
| 2020–24 | 61.1 | 39.8 | 40.1 |
| Change | +9.3 | +1.0 | +2.3 |
With a median age of 61.1, ZIP 51331 is noticeably older than the country as a whole (40.1), an age mix that tilts toward empty nesters and retirees.
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 51331
| Period | ZIP 51331 | Iowa | U.S. |
|---|---|---|---|
| 2006–10 | 2.3% | 9.5% | 12.3% |
| 2010–14 | 7.9% | 9.9% | 12.3% |
| 2015–19 | 8.8% | 10.0% | 11.6% |
| 2020–24 | 3.2% | 10.0% | 11.6% |
| Change | +0.8 pts | +0.6 pts | −0.6 pts |
Single parents head only 3.2% of households in ZIP 51331, well below the national share of 11.6%.
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 51331
Renters in ZIP 51331
| Period | ZIP 51331 | Iowa | U.S. |
|---|---|---|---|
| 2006–10 | 24.0% | 26.8% | 33.3% |
| 2010–14 | 29.5% | 28.2% | 35.6% |
| 2015–19 | 20.8% | 28.9% | 36.0% |
| 2020–24 | 11.7% | 28.3% | 34.8% |
| Change | −12.3 pts | +1.5 pts | +1.5 pts |
Only 11.7% of households in ZIP 51331 rent their homes, far below the national share of 34.8%, so most residents are owners who tend to stay put. Among homeowners, 57.0% have no mortgage at all, well above the national share of 39.8%.
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 51331
| Period | ZIP 51331 | Iowa | U.S. |
|---|---|---|---|
| 2006–10 | 38.4% | 8.7% | 11.4% |
| 2010–14 | 47.9% | 8.6% | 11.4% |
| 2015–19 | 51.4% | 9.4% | 11.1% |
| 2020–24 | 58.7% | 8.8% | 9.6% |
| Change | +20.3 pts | +0.1 pts | −1.8 pts |
Vacant homes make up 58.7% of the housing in ZIP 51331, 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.
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 51331
| Period | ZIP 51331 | Iowa | U.S. |
|---|---|---|---|
| 2006–10 | 1980 | 1965 | 1974 |
| 2010–14 | 1981 | 1967 | 1975 |
| 2015–19 | 1987 | 1969 | 1977 |
| 2020–24 | 1990 | 1971 | 1980 |
| Change | +9 | +6 | +6 |
ZIP 51331 has newer housing than the country as a whole: the median home was built in 1990, versus 1980 nationally.
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 51331
| Period | ZIP 51331 | Iowa | U.S. |
|---|---|---|---|
| 2006–10 | $522 | $669 | $965 |
| 2010–14 | $569 | $732 | $1,040 |
| 2015–19 | $677 | $821 | $1,213 |
| 2020–24 | $889 | $1,020 | $1,571 |
| Change | +$367 | +$351 | +$606 |
Rent in ZIP 51331 runs $889 a month at the median, utilities included, well below the U.S. median of $1,571. The typical renter here spends 35.2% of household income on rent, well over the 30% mark often used to define affordable rent, so many renters here are stretched.
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 51331
Bachelor's degrees in ZIP 51331
| Period | ZIP 51331 | Iowa | U.S. |
|---|---|---|---|
| 2006–10 | 23.2% | 26.5% | 28.4% |
| 2010–14 | 28.3% | 27.9% | 29.6% |
| 2015–19 | 29.8% | 29.3% | 32.1% |
| 2020–24 | 33.0% | 32.3% | 35.6% |
| Change | +9.8 pts | +5.8 pts | +7.2 pts |
College degrees are about as common in ZIP 51331 as nationally: 33.0% of adults 25 and older have a bachelor's or higher, against 35.6%.
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 51331
| Period | ZIP 51331 | Iowa | U.S. |
|---|---|---|---|
| 2006–10 | 93.8% | 90.4% | 84.9% |
| 2010–14 | 97.2% | 91.4% | 86.1% |
| 2015–19 | 98.2% | 92.1% | 87.7% |
| 2020–24 | 97.6% | 93.0% | 89.3% |
| Change | +3.8 pts | +2.7 pts | +4.3 pts |
Finishing high school is nearly universal in ZIP 51331: 97.6% of adults 25 and older have a diploma or equivalent, well above the national rate of 89.3%.
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 51331
| Period | ZIP 51331 | Iowa | U.S. |
|---|---|---|---|
| 2006–10 | 4.2% | 5.2% | 8.1% |
| 2010–14 | 7.9% | 5.4% | 9.4% |
| 2015–19 | 2.5% | 3.7% | 5.6% |
| 2020–24 | 0.5% | 3.7% | 5.4% |
| Change | −3.7 pts | −1.5 pts | −2.7 pts |
Unemployment in ZIP 51331 has been low: just 0.5% 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 51331 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 51331 | 1.85 | 61.1 | 3.2% | 11.7% | 58.7% | 1990 | $889 | 33.0% | 97.6% | 0.5% |
| ZIP 51355 | 1.70 | 51.8 | 3.0% | 29.0% | 56.0% | 1979 | $973 | 46.8% | 97.9% | 3.8% |
| ZIP 51351 | 2.08 | 50.8 | 6.5% | 25.8% | 16.9% | 1974 | $965 | 27.9% | 97.3% | 3.6% |
| ZIP 51360 | 2.01 | 47.7 | 4.9% | 25.3% | 25.8% | 1981 | $981 | 31.9% | 96.3% | 2.9% |
| ZIP 51340 | 2.34 | 53.3 | 3.8% | 7.3% | 14.4% | 1955 | $850 | 18.4% | 95.0% | 0.5% |
| ZIP 51364 | 2.57 | 42.8 | 5.3% | 5.1% | 15.8% | 1974 | $662 | 32.6% | 98.6% | 1.0% |
| ZIP 51363 | 2.01 | 63.4 | 0.9% | 0.9% | 18.9% | 1969 | $1,384 | 34.0% | 93.0% | 7.9% |
| ZIP 51347 | 2.24 | 42.2 | 6.8% | 7.8% | 11.1% | 1960 | $883 | 19.3% | 98.6% | 4.0% |
| ZIP 51334 | 2.14 | 41.9 | 10.1% | 22.0% | 10.7% | 1954 | $780 | 14.7% | 87.0% | 1.2% |
| ZIP 51345 | 1.92 | 48.8 | 1.6% | 41.6% | 6.7% | 1953 | $918 | 13.1% | 71.4% | 0.3% |
| ZIP 51365 | 2.43 | 43.9 | 3.6% | 6.3% | 13.6% | 1952 | $733 | 24.3% | 91.3% | 1.4% |
All figures 2020–24.
Zip codes with similar populations: 80444, CO · 17099, PA · 17352, PA · 18059, PA · 18216, PA · 20624, MD · 23039, VA · 93608, CA · 89007, NV · 84083, UT
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 51331. 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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