Population 31,564 · Census ACS 2020–24
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Population and households in Algonquin
Household size in Algonquin
| Period | Algonquin | Chicago area | Illinois | U.S. |
|---|---|---|---|---|
| 2006–10 | 2.99 | 2.79 | 2.69 | 2.68 |
| 2010–14 | 2.94 | 2.82 | 2.71 | 2.73 |
| 2015–19 | 2.77 | 2.75 | 2.66 | 2.71 |
| 2020–24 | 2.81 | 2.66 | 2.58 | 2.65 |
| Change | −0.18 | −0.12 | −0.11 | −0.03 |
The typical household in Algonquin holds 2.81 people, slightly more than the U.S. average of 2.65. Since 2006–10, household size has dropped from 2.99, a much bigger shift than nationally. Households are largest in the south and smallest in the northeast.
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 Algonquin
| Period | Algonquin | Chicago area | Illinois | U.S. |
|---|---|---|---|---|
| 2006–10 | 37.8 | 36.8 | 37.6 | 37.7 |
| 2010–14 | 39.6 | 37.8 | 38.5 | 38.6 |
| 2015–19 | 41.1 | 38.9 | 39.6 | 39.6 |
| 2020–24 | 42.0 | 39.7 | 40.2 | 40.1 |
| Change | +4.2 | +3.0 | +2.6 | +2.3 |
The median resident of Algonquin is 42.0 years old, a bit older than the national median of 40.1. Since 2006–10, the median age has climbed from 37.8, in line with the national trend. Residents skew youngest in the south and oldest in the west.
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 Algonquin
| Period | Algonquin | Chicago area | Illinois | U.S. |
|---|---|---|---|---|
| 2006–10 | 7.2% | 12.0% | 11.7% | 12.3% |
| 2010–14 | 7.3% | 12.0% | 11.7% | 12.3% |
| 2015–19 | 6.6% | 11.2% | 11.1% | 11.6% |
| 2020–24 | 6.6% | 11.5% | 11.3% | 11.6% |
| Change | −0.6 pts | −0.5 pts | −0.4 pts | −0.6 pts |
Single-parent households are relatively rare in Algonquin: 6.6% of households, against 11.6% nationally. The single-parent share has edged down 0.6 points since 2006–10, mirroring the country. Algonquin has a lower share of single-parent households than the great majority of Illinois cities.
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 Algonquin
Renters in Algonquin
| Period | Algonquin | Chicago area | Illinois | U.S. |
|---|---|---|---|---|
| 2006–10 | 9.1% | 32.1% | 30.8% | 33.3% |
| 2010–14 | 10.4% | 34.8% | 33.1% | 35.6% |
| 2015–19 | 15.2% | 35.5% | 33.9% | 36.0% |
| 2020–24 | 11.4% | 34.5% | 32.9% | 34.8% |
| Change | +2.3 pts | +2.3 pts | +2.1 pts | +1.5 pts |
Only 11.4% of households in Algonquin rent their homes, far below the national share of 34.8%, so most residents are owners who tend to stay put. About a quarter of owners (25.2%) have paid off their mortgages, well below the national share of 39.8%. Renting is most common in the southwest and least common in the southeast. Since 2006–10, the renter share has risen 2.3 points, mirroring the country.
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 Algonquin
| Period | Algonquin | Chicago area | Illinois | U.S. |
|---|---|---|---|---|
| 2006–10 | 3.4% | 9.8% | 10.0% | 11.4% |
| 2010–14 | 6.8% | 9.8% | 10.1% | 11.4% |
| 2015–19 | 4.8% | 8.9% | 9.8% | 11.1% |
| 2020–24 | 5.2% | 7.2% | 8.1% | 9.6% |
| Change | +1.8 pts | −2.6 pts | −1.9 pts | −1.8 pts |
Only 5.2% of homes in Algonquin are vacant, far below the national rate of 9.6%, which usually means strong demand for housing. Vacancy has risen 1.8 points since 2006–10, even as the national rate fell.
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 Algonquin
| Period | Algonquin | Chicago area | Illinois | U.S. |
|---|---|---|---|---|
| 2006–10 | 1990 | 1966 | 1966 | 1974 |
| 2010–14 | 1990 | 1967 | 1967 | 1975 |
| 2015–19 | 1991 | 1967 | 1968 | 1977 |
| 2020–24 | 1990 | 1970 | 1970 | 1980 |
| Change | −0 | +4 | +4 | +6 |
Algonquin has newer housing than the country as a whole: the median home was built in 1990, versus 1980 nationally. Newer construction is concentrated in the northwest, while the northeast has the oldest housing. Algonquin has newer homes than at least four in five Illinois cities.
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 Algonquin
| Period | Algonquin | Chicago area | Illinois | U.S. |
|---|---|---|---|---|
| 2006–10 | $1,407 | $1,060 | $953 | $965 |
| 2010–14 | $1,399 | $1,142 | $1,028 | $1,040 |
| 2015–19 | $1,717 | $1,306 | $1,165 | $1,213 |
| 2020–24 | $1,808 | $1,602 | $1,428 | $1,571 |
| Change | +$402 | +$542 | +$475 | +$606 |
A typical rental in Algonquin costs $1,808 a month with utilities, above the national median of $1,571. Rents are up $402 a month from 2006–10, a 29% rise, a slower climb than the nation's. Rent takes 27.7% of the typical renter's income, just under the 30% mark often used to define affordable rent. The priciest rents are in the center; the most affordable are in the northeast.
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 Algonquin
Bachelor's degrees in Algonquin
| Period | Algonquin | Chicago area | Illinois | U.S. |
|---|---|---|---|---|
| 2006–10 | 41.1% | 33.9% | 31.2% | 28.4% |
| 2010–14 | 43.2% | 35.2% | 32.4% | 29.6% |
| 2015–19 | 43.6% | 37.9% | 34.7% | 32.1% |
| 2020–24 | 43.0% | 40.9% | 37.7% | 35.6% |
| Change | +1.9 pts | +7.0 pts | +6.5 pts | +7.2 pts |
More than four in ten adults 25 and older in Algonquin (43.0%) have a bachelor's degree or higher, above the national share of 35.6%. The share with a degree has risen 1.9 points since 2006–10, a smaller shift than nationally. College graduates are most concentrated in the northwest and least in the center.
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 Algonquin
| Period | Algonquin | Chicago area | Illinois | U.S. |
|---|---|---|---|---|
| 2006–10 | 94.0% | 85.6% | 86.3% | 84.9% |
| 2010–14 | 95.7% | 86.7% | 87.5% | 86.1% |
| 2015–19 | 95.2% | 88.4% | 89.1% | 87.7% |
| 2020–24 | 95.6% | 89.5% | 90.3% | 89.3% |
| Change | +1.6 pts | +3.9 pts | +4.0 pts | +4.3 pts |
High school completion is high in Algonquin: 95.6% of adults 25 and older have a diploma or equivalent, well above the national rate of 89.3%. The share with a diploma is up 1.6 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 Algonquin
| Period | Algonquin | Chicago area | Illinois | U.S. |
|---|---|---|---|---|
| 2006–10 | 5.7% | 9.1% | 8.7% | 8.1% |
| 2010–14 | 9.4% | 10.8% | 10.2% | 9.4% |
| 2015–19 | 4.8% | 6.3% | 6.1% | 5.6% |
| 2020–24 | 4.3% | 6.3% | 6.0% | 5.4% |
| Change | −1.4 pts | −2.8 pts | −2.7 pts | −2.7 pts |
Jobs have been a little easier to find in Algonquin than nationally: unemployment was 4.3%, against 5.4%. Unemployment is down 1.4 points from 2006–10, mirroring the country. 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).
Algonquin 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| Algonquin | 2.81 | 42.0 | 6.6% | 11.4% | 5.2% | 1990 | $1,808 | 43.0% | 95.6% | 4.3% |
| Carpentersville | 3.39 | 33.8 | 15.2% | 28.2% | 3.9% | 1976 | $1,533 | 23.1% | 77.8% | 5.8% |
| Lake in the Hills | 3.05 | 36.3 | 10.7% | 15.0% | 3.4% | 1994 | $1,687 | 37.5% | 94.6% | 5.2% |
| Dundee | 2.62 | 40.8 | 8.5% | 20.0% | 3.1% | 1994 | $1,821 | 45.9% | 96.0% | 3.6% |
| Trout Valley | 2.22 | 44.2 | 3.3% | 15.3% | 8.8% | 1967 | $1,355 | 41.9% | 93.2% | 4.1% |
| West Dundee | 2.52 | 38.6 | 7.6% | 41.0% | 3.9% | 1982 | $1,725 | 53.0% | 95.3% | 2.9% |
| East Dundee | 2.08 | 53.7 | 5.8% | 30.6% | 2.9% | 1986 | $1,416 | 36.7% | 94.6% | 1.5% |
| Sleepy Hollow | 2.39 | 47.0 | 5.1% | 26.2% | 0.8% | 1985 | $1,581 | 48.2% | 94.9% | 5.1% |
| Crystal Lake | 2.78 | 41.6 | 8.9% | 19.4% | 4.0% | 1982 | $1,533 | 43.0% | 93.6% | 4.2% |
| Barrington Hills | 2.82 | 42.2 | 10.5% | 18.2% | 5.9% | 1984 | $2,463 | 57.3% | 95.6% | 2.6% |
| Cary | 2.81 | 40.7 | 9.0% | 12.3% | 4.4% | 1982 | $1,672 | 46.9% | 97.4% | 4.1% |
All figures 2020–24.
Cities with similar populations: Immokalee, FL · Raytown, MO · Twentynine Palms, CA · Studio City, CA · Cayey, PR · Ridgecrest, CA · Bethany, OR · Beltsville, MD · Jacksonville Beach, FL · Rosemount, MN
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 Algonquin. 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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