Population 10,678 · Census ACS 2020–24
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Population and households in Louisa County
Household size in Louisa County
| Period | Louisa County | Iowa | U.S. |
|---|---|---|---|
| 2006–10 | 2.66 | 2.44 | 2.68 |
| 2010–14 | 2.53 | 2.45 | 2.73 |
| 2015–19 | 2.54 | 2.43 | 2.71 |
| 2020–24 | 2.52 | 2.43 | 2.65 |
| Change | −0.14 | −0.01 | −0.03 |
The average household in Louisa County has 2.52 people, a bit under the U.S. average of 2.65. Still, the typical household here is bigger than in Iowa overall, where it has 2.43 people. Household size has dropped from 2.66 in 2006–10, a much bigger shift than nationally.
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 Louisa County
| Period | Louisa County | Iowa | U.S. |
|---|---|---|---|
| 2006–10 | 39.9 | 38.8 | 37.7 |
| 2010–14 | 41.4 | 39.3 | 38.6 |
| 2015–19 | 42.7 | 39.7 | 39.6 |
| 2020–24 | 44.1 | 39.8 | 40.1 |
| Change | +4.3 | +1.0 | +2.3 |
With a median age of 44.1, Louisa County is noticeably older than the country as a whole (40.1), an age mix that tilts toward empty nesters and retirees. Since 2006–10, the median age has climbed from 39.9, as it has nationally. The youngest areas are in the northwest, the oldest in the northeast.
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 Louisa County
| Period | Louisa County | Iowa | U.S. |
|---|---|---|---|
| 2006–10 | 9.9% | 9.5% | 12.3% |
| 2010–14 | 8.7% | 9.9% | 12.3% |
| 2015–19 | 11.0% | 10.0% | 11.6% |
| 2020–24 | 6.3% | 10.0% | 11.6% |
| Change | −3.6 pts | +0.6 pts | −0.6 pts |
Single parents head only 6.3% of households in Louisa County, well below the national share of 11.6%. The single-parent share is down 3.6 points from 2006–10, a much bigger shift than nationally. Louisa County has a lower share of single-parent households than at least four in five Iowa counties.
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 Louisa County
Renters in Louisa County
| Period | Louisa County | Iowa | U.S. |
|---|---|---|---|
| 2006–10 | 19.9% | 26.8% | 33.3% |
| 2010–14 | 23.1% | 28.2% | 35.6% |
| 2015–19 | 23.1% | 28.9% | 36.0% |
| 2020–24 | 19.7% | 28.3% | 34.8% |
| Change | −0.2 pts | +1.5 pts | +1.5 pts |
Louisa County is largely a place of homeowners: only 19.7% of households rent, far below the national share of 34.8%. Owner-heavy areas like this tend to see less turnover. About half of owners (50.9%) have paid off their mortgages, well above the national share of 39.8%. Renting is most common in the east and least common in the north.
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 Louisa County
| Period | Louisa County | Iowa | U.S. |
|---|---|---|---|
| 2006–10 | 13.6% | 8.7% | 11.4% |
| 2010–14 | 12.7% | 8.6% | 11.4% |
| 2015–19 | 14.2% | 9.4% | 11.1% |
| 2020–24 | 10.4% | 8.8% | 9.6% |
| Change | −3.2 pts | +0.1 pts | −1.8 pts |
Vacancy in Louisa County is close to the national rate: 10.4% of homes are empty, against 9.6%. The rate is higher than in Iowa as a whole (8.8%). Since 2006–10, vacancy has fallen 3.2 points, 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 Louisa County
| Period | Louisa County | Iowa | U.S. |
|---|---|---|---|
| 2006–10 | 1961 | 1965 | 1974 |
| 2010–14 | 1961 | 1967 | 1975 |
| 2015–19 | 1959 | 1969 | 1977 |
| 2020–24 | 1963 | 1971 | 1980 |
| Change | +2 | +6 | +6 |
The housing in Louisa County is old by national standards: the median home dates to 1963, 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 Louisa County
| Period | Louisa County | Iowa | U.S. |
|---|---|---|---|
| 2006–10 | $616 | $669 | $965 |
| 2010–14 | $617 | $732 | $1,040 |
| 2015–19 | $657 | $821 | $1,213 |
| 2020–24 | $864 | $1,020 | $1,571 |
| Change | +$248 | +$351 | +$606 |
The median renter in Louisa County pays $864 a month for rent and utilities, well below the national median of $1,571. Rent has climbed $248 a month since 2006–10, up 40%, a slower climb than the nation's. Rent takes 20.1% 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 Louisa County
Bachelor's degrees in Louisa County
| Period | Louisa County | Iowa | U.S. |
|---|---|---|---|
| 2006–10 | 13.7% | 26.5% | 28.4% |
| 2010–14 | 13.9% | 27.9% | 29.6% |
| 2015–19 | 15.2% | 29.3% | 32.1% |
| 2020–24 | 16.9% | 32.3% | 35.6% |
| Change | +3.2 pts | +5.8 pts | +7.2 pts |
Fewer adults in Louisa County have a four-year degree than in the country as a whole: 16.9%, against 35.6% nationally. Since 2006–10, the share with a degree has risen 3.2 points, in line with the national trend. Only five of Iowa's 99 counties have a lower share of college graduates.
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 Louisa County
| Period | Louisa County | Iowa | U.S. |
|---|---|---|---|
| 2006–10 | 81.2% | 90.4% | 84.9% |
| 2010–14 | 82.7% | 91.4% | 86.1% |
| 2015–19 | 85.0% | 92.1% | 87.7% |
| 2020–24 | 86.0% | 93.0% | 89.3% |
| Change | +4.7 pts | +2.7 pts | +4.3 pts |
About one in seven adults in Louisa County never finished high school, more than nationally: 86.0% have a diploma or equivalent, against 89.3% across the U.S. The share with a diploma is up 4.7 points from 2006–10, as it has nationally. Few Iowa counties have a lower share of high school graduates: only four of 99.
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 Louisa County
| Period | Louisa County | Iowa | U.S. |
|---|---|---|---|
| 2006–10 | 8.3% | 5.2% | 8.1% |
| 2010–14 | 6.7% | 5.4% | 9.4% |
| 2015–19 | 4.7% | 3.7% | 5.6% |
| 2020–24 | 2.9% | 3.7% | 5.4% |
| Change | −5.4 pts | −1.5 pts | −2.7 pts |
Unemployment in Louisa County has been low: just 2.9% of the labor force was out of work and looking, well below the national rate of 5.4%. Since 2006–10, unemployment has fallen 5.4 points, mirroring the country. 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).
Louisa County compared with nearby counties
| County | Household size | Median age | Single parents | Renters | Vacant homes | Median year built | Median rent | Bachelor's degree | High school diploma | Unemployment |
|---|---|---|---|---|---|---|---|---|---|---|
| Louisa County | 2.52 | 44.1 | 6.3% | 19.7% | 10.4% | 1963 | $864 | 16.9% | 86.0% | 2.9% |
| Washington County | 2.52 | 40.9 | 9.0% | 26.0% | 7.7% | 1966 | $877 | 26.4% | 93.4% | 2.2% |
| Mercer County | 2.35 | 43.6 | 7.6% | 16.2% | 10.5% | 1961 | $775 | 21.1% | 93.9% | 3.0% |
| Keokuk County | 2.45 | 42.9 | 9.7% | 18.7% | 11.6% | 1952 | $817 | 16.9% | 94.3% | 4.3% |
| Henry County | 2.42 | 44.0 | 11.2% | 20.1% | 10.4% | 1960 | $933 | 24.6% | 92.0% | 5.1% |
| Mahaska County | 2.45 | 39.5 | 9.9% | 32.0% | 9.7% | 1963 | $821 | 24.7% | 93.5% | 3.7% |
| Marion County | 2.43 | 40.2 | 7.1% | 22.3% | 8.4% | 1976 | $891 | 33.1% | 94.8% | 2.3% |
| Bureau County | 2.33 | 44.0 | 10.1% | 23.9% | 10.6% | 1957 | $864 | 21.6% | 91.3% | 4.3% |
| Putnam County | 2.31 | 45.3 | 10.9% | 18.5% | 16.3% | 1971 | $817 | 21.9% | 94.2% | 4.1% |
| LaSalle County | 2.37 | 42.4 | 12.0% | 25.6% | 9.3% | 1966 | $1,011 | 20.5% | 92.1% | 5.7% |
| Madison County | 2.57 | 40.8 | 10.3% | 19.9% | 6.4% | 1977 | $1,076 | 27.0% | 96.7% | 3.3% |
All figures 2020–24.
Counties with similar populations: Custer County, ID · Stonewall County, TX · Dewey County, OK · Deuel County, SD · Deuel County, NE · Denali Borough, AK · Delta County, TX · Decatur County, KS · Decatur County, IA · De Baca County, NM
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 Louisa County. 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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