Population 108,714 · Census ACS 2020–24
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Population and households in LaSalle County
Household size in LaSalle County
| Period | LaSalle County | Illinois | U.S. |
|---|---|---|---|
| 2006–10 | 2.49 | 2.69 | 2.68 |
| 2010–14 | 2.53 | 2.71 | 2.73 |
| 2015–19 | 2.39 | 2.66 | 2.71 |
| 2020–24 | 2.37 | 2.58 | 2.65 |
| Change | −0.12 | −0.11 | −0.03 |
Households in LaSalle County are small: just 2.37 people on average, compared with 2.65 nationally. That is typical of places where many people live alone or as couples, and fewer have children at home. Household size has dropped from 2.49 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 LaSalle County
| Period | LaSalle County | Illinois | U.S. |
|---|---|---|---|
| 2006–10 | 40.8 | 37.6 | 37.7 |
| 2010–14 | 41.7 | 38.5 | 38.6 |
| 2015–19 | 42.7 | 39.6 | 39.6 |
| 2020–24 | 42.4 | 40.2 | 40.1 |
| Change | +1.7 | +2.6 | +2.3 |
LaSalle County skews a little older than the country: its median age is 42.4, against 40.1 nationally. The median age has climbed from 40.8 in 2006–10, mirroring the country.
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 LaSalle County
| Period | LaSalle County | Illinois | U.S. |
|---|---|---|---|
| 2006–10 | 9.8% | 11.7% | 12.3% |
| 2010–14 | 10.8% | 11.7% | 12.3% |
| 2015–19 | 10.7% | 11.1% | 11.6% |
| 2020–24 | 12.0% | 11.3% | 11.6% |
| Change | +2.2 pts | −0.4 pts | −0.6 pts |
Single-parent households are about as common in LaSalle County as they are nationally: 12.0%, against 11.6%. Since 2006–10, the single-parent share has risen 2.2 points, 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 LaSalle County
Renters in LaSalle County
| Period | LaSalle County | Illinois | U.S. |
|---|---|---|---|
| 2006–10 | 23.7% | 30.8% | 33.3% |
| 2010–14 | 25.6% | 33.1% | 35.6% |
| 2015–19 | 28.2% | 33.9% | 36.0% |
| 2020–24 | 25.6% | 32.9% | 34.8% |
| Change | +1.9 pts | +2.1 pts | +1.5 pts |
About a quarter of households in LaSalle County rent their homes (25.6%), below the national share of 34.8%; the rest own. Among homeowners, 45.4% have no mortgage at all, above the national share of 39.8%. Renting is most common in the northwest and least common in the northeast. Since 2006–10, the renter share has risen 1.9 points, as it has 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 LaSalle County
| Period | LaSalle County | Illinois | U.S. |
|---|---|---|---|
| 2006–10 | 9.7% | 10.0% | 11.4% |
| 2010–14 | 13.0% | 10.1% | 11.4% |
| 2015–19 | 11.0% | 9.8% | 11.1% |
| 2020–24 | 9.3% | 8.1% | 9.6% |
| Change | −0.5 pts | −1.9 pts | −1.8 pts |
About as many homes sit empty in LaSalle County as nationally: 9.3%, against 9.6%. LaSalle County has a lower vacancy rate than most Illinois counties.
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 LaSalle County
| Period | LaSalle County | Illinois | U.S. |
|---|---|---|---|
| 2006–10 | 1961 | 1966 | 1974 |
| 2010–14 | 1962 | 1967 | 1975 |
| 2015–19 | 1963 | 1968 | 1977 |
| 2020–24 | 1966 | 1970 | 1980 |
| Change | +5 | +4 | +6 |
The housing in LaSalle County is old by national standards: the median home dates to 1966, against 1980 for the U.S., so buyers will find more older houses, some of them due for updates. The median year built has moved up from 1961 in 2006–10, a sign of steady new building. Newer construction is concentrated in the northeast, while the southwest 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 LaSalle County
| Period | LaSalle County | Illinois | U.S. |
|---|---|---|---|
| 2006–10 | $678 | $953 | $965 |
| 2010–14 | $747 | $1,028 | $1,040 |
| 2015–19 | $850 | $1,165 | $1,213 |
| 2020–24 | $1,011 | $1,428 | $1,571 |
| Change | +$332 | +$475 | +$606 |
Rent in LaSalle County runs $1,011 a month at the median, utilities included, well below the U.S. median of $1,571. Rents are up $332 a month from 2006–10, a 49% rise, a slower climb than the nation's. Rent takes 28.2% of the typical renter's income, just under the 30% mark often used to define affordable rent. The priciest rents are in the northeast; the most affordable are in the northwest.
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 LaSalle County
Bachelor's degrees in LaSalle County
| Period | LaSalle County | Illinois | U.S. |
|---|---|---|---|
| 2006–10 | 16.0% | 31.2% | 28.4% |
| 2010–14 | 16.2% | 32.4% | 29.6% |
| 2015–19 | 18.0% | 34.7% | 32.1% |
| 2020–24 | 20.5% | 37.7% | 35.6% |
| Change | +4.5 pts | +6.5 pts | +7.2 pts |
Fewer adults in LaSalle County have a four-year degree than in the country as a whole: 20.5%, against 35.6% nationally. Since 2006–10, the share with a degree has risen 4.5 points, as it has 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 LaSalle County
| Period | LaSalle County | Illinois | U.S. |
|---|---|---|---|
| 2006–10 | 87.8% | 86.3% | 84.9% |
| 2010–14 | 88.6% | 87.5% | 86.1% |
| 2015–19 | 88.7% | 89.1% | 87.7% |
| 2020–24 | 92.1% | 90.3% | 89.3% |
| Change | +4.3 pts | +4.0 pts | +4.3 pts |
About nine in ten adults in LaSalle County have finished high school (92.1%), a bit above the national rate of 89.3%. The share with a diploma is up 4.3 points from 2006–10, mirroring the country.
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 LaSalle County
| Period | LaSalle County | Illinois | U.S. |
|---|---|---|---|
| 2006–10 | 9.4% | 8.7% | 8.1% |
| 2010–14 | 11.1% | 10.2% | 9.4% |
| 2015–19 | 5.9% | 6.1% | 5.6% |
| 2020–24 | 5.7% | 6.0% | 5.4% |
| Change | −3.7 pts | −2.7 pts | −2.7 pts |
At 5.7%, unemployment in LaSalle County is close to the national rate of 5.4%. Unemployment is down 3.7 points from 2006–10, in line with the national trend. 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).
LaSalle 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| LaSalle County | 2.37 | 42.4 | 12.0% | 25.6% | 9.3% | 1966 | $1,011 | 20.5% | 92.1% | 5.7% |
| Putnam County | 2.31 | 45.3 | 10.9% | 18.5% | 16.3% | 1971 | $817 | 21.9% | 94.2% | 4.1% |
| Bureau County | 2.33 | 44.0 | 10.1% | 23.9% | 10.6% | 1957 | $864 | 21.6% | 91.3% | 4.3% |
| Grundy County | 2.64 | 39.5 | 10.0% | 25.6% | 4.7% | 1986 | $1,242 | 23.7% | 93.7% | 4.5% |
| Henry County | 2.42 | 44.0 | 11.2% | 20.1% | 10.4% | 1960 | $933 | 24.6% | 92.0% | 5.1% |
| Rock Island County | 2.29 | 41.1 | 13.3% | 30.3% | 7.8% | 1961 | $971 | 24.8% | 90.7% | 5.6% |
| Mercer County | 2.35 | 43.6 | 7.6% | 16.2% | 10.5% | 1961 | $775 | 21.1% | 93.9% | 3.0% |
| Muscatine County | 2.43 | 40.0 | 13.7% | 26.1% | 7.4% | 1968 | $1,008 | 23.5% | 89.7% | 3.0% |
| Starke County | 2.70 | 41.7 | 9.3% | 17.0% | 19.0% | 1974 | $899 | 13.1% | 87.7% | 3.5% |
| Louisa County | 2.52 | 44.1 | 6.3% | 19.7% | 10.4% | 1963 | $864 | 16.9% | 86.0% | 2.9% |
| Marshall County | 2.63 | 41.0 | 11.2% | 23.6% | 11.3% | 1971 | $1,011 | 20.6% | 84.3% | 2.6% |
All figures 2020–24.
Counties with similar populations: Woodbury County, IA · Androscoggin County, ME · Bartow County, GA · Bay County, MI · Bradley County, TN · Calhoun County, AL · Carroll County, GA · Windham County, CT · Laramie County, WY · Cowlitz County, WA
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 LaSalle 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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