Population 423 · Census ACS 2020–24
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Population and households in Rock Falls
Household size in Rock Falls
| Period | Rock Falls | Iowa | U.S. |
|---|---|---|---|
| 2006–10 | 2.47 | 2.44 | 2.68 |
| 2010–14 | 2.38 | 2.45 | 2.73 |
| 2015–19 | 2.37 | 2.43 | 2.71 |
| 2020–24 | 2.67 | 2.43 | 2.65 |
| Change | +0.19 | −0.01 | −0.03 |
Households in Rock Falls average 2.67 people, about the same as the country as a whole (2.65). The typical household here is bigger than in Iowa overall, where it has 2.43 people. Since 2006–10, household size has climbed from 2.47, but in a place this small, survey estimates can swing a lot from one release to the next.
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 Rock Falls
| Period | Rock Falls | Iowa | U.S. |
|---|---|---|---|
| 2006–10 | 43.3 | 38.8 | 37.7 |
| 2010–14 | 48.0 | 39.3 | 38.6 |
| 2015–19 | 40.0 | 39.7 | 39.6 |
| 2020–24 | 35.6 | 39.8 | 40.1 |
| Change | −7.6 | +1.0 | +2.3 |
Rock Falls is young: half of its residents are under 35.6, compared with a national median of 40.1. The population tilts toward young adults and children.
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 Rock Falls
| Period | Rock Falls | Iowa | U.S. |
|---|---|---|---|
| 2006–10 | 8.3% | 9.5% | 12.3% |
| 2010–14 | 4.9% | 9.9% | 12.3% |
| 2015–19 | 10.4% | 10.0% | 11.6% |
| 2020–24 | 7.6% | 10.0% | 11.6% |
| Change | −0.7 pts | +0.6 pts | −0.6 pts |
Single-parent households are relatively rare in Rock Falls: 7.6% of households, against 11.6% 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 Rock Falls
Renters in Rock Falls
| Period | Rock Falls | Iowa | U.S. |
|---|---|---|---|
| 2006–10 | 20.1% | 26.8% | 33.3% |
| 2010–14 | 13.2% | 28.2% | 35.6% |
| 2015–19 | 19.1% | 28.9% | 36.0% |
| 2020–24 | 10.2% | 28.3% | 34.8% |
| Change | −10.0 pts | +1.5 pts | +1.5 pts |
Only 10.2% of households in Rock Falls rent their homes, far below the national share of 34.8%, so most residents are owners who tend to stay put. Among homeowners, 43.0% have no mortgage at all, 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 Rock Falls
| Period | Rock Falls | Iowa | U.S. |
|---|---|---|---|
| 2006–10 | 7.9% | 8.7% | 11.4% |
| 2010–14 | 6.0% | 8.6% | 11.4% |
| 2015–19 | 5.8% | 9.4% | 11.1% |
| 2020–24 | 12.2% | 8.8% | 9.6% |
| Change | +4.3 pts | +0.1 pts | −1.8 pts |
A few more homes sit empty in Rock Falls than nationally: 12.2%, against 9.6%. The count includes vacation homes and homes between owners or tenants, not just abandoned ones.
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 Rock Falls
| Period | Rock Falls | Iowa | U.S. |
|---|---|---|---|
| 2006–10 | 1946 | 1965 | 1974 |
| 2010–14 | 1963 | 1967 | 1975 |
| 2015–19 | 1953 | 1969 | 1977 |
| 2020–24 | 1946 | 1971 | 1980 |
| Change | +0 | +6 | +6 |
The housing in Rock Falls is old by national standards: the median home dates to 1946, against 1980 for the U.S., so buyers will find more older houses, some of them due for updates.
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 Rock Falls
| Period | Rock Falls | Iowa | U.S. |
|---|---|---|---|
| 2006–10 | $576 | $669 | $965 |
| 2010–14 | $680 | $732 | $1,040 |
| 2015–19 | $673 | $821 | $1,213 |
| 2020–24 | $811 | $1,020 | $1,571 |
| Change | +$234 | +$351 | +$606 |
Rent in Rock Falls runs $811 a month at the median, utilities included, well below the U.S. median of $1,571. Rent takes 17.1% of the typical renter's income, comfortably under the 30% mark often used to define affordable rent.
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 Rock Falls
Bachelor's degrees in Rock Falls
| Period | Rock Falls | Iowa | U.S. |
|---|---|---|---|
| 2006–10 | 10.4% | 26.5% | 28.4% |
| 2010–14 | 15.8% | 27.9% | 29.6% |
| 2015–19 | 14.8% | 29.3% | 32.1% |
| 2020–24 | 16.3% | 32.3% | 35.6% |
| Change | +5.9 pts | +5.8 pts | +7.2 pts |
College degrees are relatively uncommon in Rock Falls: 16.3% of adults 25 and older hold a bachelor's or higher, well below the national share of 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 Rock Falls
| Period | Rock Falls | Iowa | U.S. |
|---|---|---|---|
| 2006–10 | 93.0% | 90.4% | 84.9% |
| 2010–14 | 93.5% | 91.4% | 86.1% |
| 2015–19 | 97.3% | 92.1% | 87.7% |
| 2020–24 | 97.1% | 93.0% | 89.3% |
| Change | +4.2 pts | +2.7 pts | +4.3 pts |
Finishing high school is nearly universal in Rock Falls: 97.1% 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 Rock Falls
| Period | Rock Falls | Iowa | U.S. |
|---|---|---|---|
| 2006–10 | 4.6% | 5.2% | 8.1% |
| 2010–14 | 6.1% | 5.4% | 9.4% |
| 2015–19 | 0.5% | 3.7% | 5.6% |
| 2020–24 | 3.2% | 3.7% | 5.4% |
| Change | −1.4 pts | −1.5 pts | −2.7 pts |
Unemployment in Rock Falls has been low: just 3.2% of the labor force was out of work and looking, well below the national rate of 5.4%. That is in line with the rest of Iowa. 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).
Rock Falls compared with nearby cities
| City | Household size | Median age | Single parents | Renters | Vacant homes | Median year built | Median rent | Bachelor's degree | High school diploma | Unemployment |
|---|---|---|---|---|---|---|---|---|---|---|
| Rock Falls | 2.67 | 35.6 | 7.6% | 10.2% | 12.2% | 1946 | $811 | 16.3% | 97.1% | 3.2% |
| Plymouth | 2.56 | 37.9 | 7.0% | 12.0% | 11.0% | 1945 | $798 | 14.8% | 97.0% | 3.0% |
| Portland | 2.43 | 42.0 | 4.0% | 28.1% | 11.3% | 1981 | $959 | 28.0% | 90.3% | 0.3% |
| Nora Springs | 2.57 | 43.6 | 5.5% | 13.6% | 10.5% | 1950 | $773 | 26.4% | 96.5% | 1.4% |
| Freeman | 2.68 | 37.3 | 5.0% | 39.5% | 2.3% | 1961 | $524 | 38.0% | 98.1% | 1.2% |
| Mason City | 2.09 | 45.0 | 11.1% | 34.0% | 12.6% | 1960 | $896 | 22.7% | 94.2% | 3.2% |
| Manly | 2.48 | 40.8 | 8.9% | 30.4% | 16.5% | 1957 | $679 | 18.2% | 96.2% | 3.9% |
| Grafton | 2.14 | 49.2 | 4.6% | 15.2% | 6.6% | 1942 | $675 | 15.5% | 94.7% | 2.1% |
| Hanford | 2.34 | 46.6 | 5.9% | 4.8% | 4.3% | 1963 | $553 | 37.6% | 90.5% | 2.2% |
| Rock Creek | 2.40 | 41.3 | 6.6% | 13.9% | 3.8% | 1948 | $860 | 23.3% | 97.3% | 1.1% |
| Emery | 2.39 | 41.7 | 7.0% | 32.4% | 10.4% | 1964 | $666 | 30.5% | 96.5% | 1.7% |
All figures 2020–24.
Cities with similar populations: Holdcroft, VA · Hume, NY · Hume, IL · Huffmantown, NC · Hubbardstown, WV · Hoxeyville, MI · Houcktown, OH · Horton, KY · Horntown, OK · Hoods Crossroads, AL
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 Rock Falls. 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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