61821, IL Demographics

Population 28,588 · Census ACS 2020–24

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Median age by neighborhoodHistory and comparison ↓︎
61821, IL map of median age by neighborhood
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Population and households in ZIP 61821

Household size in ZIP 61821

Household size, people per household
PeriodZIP 61821IllinoisU.S.
2006–102.322.692.68
2010–142.352.712.73
2015–192.332.662.71
2020–242.332.582.65
Change+0.01−0.11−0.03
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Households in ZIP 61821 are small: just 2.33 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. The biggest households, usually families with children, are concentrated in the north.

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 61821

Median age, years
PeriodZIP 61821IllinoisU.S.
2006–1035.037.637.7
2010–1436.138.538.6
2015–1936.839.639.6
2020–2438.340.240.1
Change+3.2+2.6+2.3
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ZIP 61821 is a little younger than the country as a whole: its median age is 38.3, against 40.1 nationally. Since 2006–10, the median age has climbed from 35.0, in line with the national trend. Residents skew youngest in the north and oldest in the southeast.

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 61821

Single-parent households, % of households
PeriodZIP 61821IllinoisU.S.
2006–1015.3%11.7%12.3%
2010–1413.4%11.7%12.3%
2015–1911.1%11.1%11.6%
2020–2412.9%11.3%11.6%
Change−2.3 pts−0.4 pts−0.6 pts
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Single parents head about one in eight households in ZIP 61821 (12.9%), a bit above the national share of 11.6%. The single-parent share has fallen 2.3 points since 2006–10, a much bigger shift than 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 ZIP 61821

Renters in ZIP 61821

Renters, % of occupied homes
PeriodZIP 61821IllinoisU.S.
2006–1039.4%30.8%33.3%
2010–1436.9%33.1%35.6%
2015–1944.0%33.9%36.0%
2020–2438.8%32.9%34.8%
Change−0.5 pts+2.1 pts+1.5 pts
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About four in ten households in ZIP 61821 rent their homes (38.8%), a bit above the national share of 34.8%. Among owners, 37.8% have paid off their mortgages, about the same as nationally. Renting is most common in the west and least common in the southeast. The renter share has edged down 0.5 points since 2006–10, even as the national share rose.

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 61821

Vacant homes, % of all homes
PeriodZIP 61821IllinoisU.S.
2006–108.7%10.0%11.4%
2010–1410.7%10.1%11.4%
2015–1911.3%9.8%11.1%
2020–249.2%8.1%9.6%
Change+0.5 pts−1.9 pts−1.8 pts
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About as many homes sit empty in ZIP 61821 as nationally: 9.2%, against 9.6%. ZIP 61821 has a higher vacancy rate than most Illinois ZIP codes.

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 61821

Age of homes, median year built
PeriodZIP 61821IllinoisU.S.
2006–10196819661974
2010–14196619671975
2015–19196819681977
2020–24196719701980
Change−1+4+6
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The housing in ZIP 61821 is old by national standards: the median home dates to 1967, against 1980 for the U.S., so buyers will find more older houses, some of them due for updates. That is in line with the rest of Illinois. Newer construction is concentrated in the south, while the east 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 ZIP 61821

Rent, per month
PeriodZIP 61821IllinoisU.S.
2006–10$819$953$965
2010–14$930$1,028$1,040
2015–19$1,033$1,165$1,213
2020–24$1,178$1,428$1,571
Change+$359+$475+$606
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A typical rental in ZIP 61821 costs $1,178 a month with utilities, well below the national median of $1,571. Rent has climbed $359 a month since 2006–10, up 44%, a slower climb than the nation's. Rent takes 29.1% of the typical renter's income, just under the 30% mark often used to define affordable rent. Renters on a budget will find the lowest rents in the northeast; the highest are in the south.

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 61821

Bachelor's degrees in ZIP 61821

Bachelor's degrees, % of adults 25+
PeriodZIP 61821IllinoisU.S.
2006–1041.7%31.2%28.4%
2010–1443.1%32.4%29.6%
2015–1941.3%34.7%32.1%
2020–2448.0%37.7%35.6%
Change+6.3 pts+6.5 pts+7.2 pts
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ZIP 61821 is highly educated: nearly half of adults 25 and older (48.0%) hold at least a bachelor's degree, far above the national share of 35.6%. The share with a degree is up 6.3 points from 2006–10, mirroring the country.

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 61821

High school graduates, % of adults 25+
PeriodZIP 61821IllinoisU.S.
2006–1093.0%86.3%84.9%
2010–1493.4%87.5%86.1%
2015–1995.1%89.1%87.7%
2020–2494.5%90.3%89.3%
Change+1.5 pts+4.0 pts+4.3 pts
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High school completion is high in ZIP 61821: 94.5% 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 1.5 points from 2006–10, as it has nationally.

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 61821

Unemployment, % of the labor force
PeriodZIP 61821IllinoisU.S.
2006–105.1%8.7%8.1%
2010–147.1%10.2%9.4%
2015–195.3%6.1%5.6%
2020–245.8%6.0%5.4%
Change+0.7 pts−2.7 pts−2.7 pts
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Unemployment in ZIP 61821 is close to the national rate: 5.8% of the labor force, against 5.4%. Unemployment has edged up 0.7 points since 2006–10, even as the national rate fell. 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 61821 compared with nearby ZIP codes

ZIP codeHousehold sizeMedian ageSingle parentsRentersVacant homesMedian year builtMedian rentBachelor's degreeHigh school diplomaUnemployment
ZIP 618212.3338.312.9%38.8%9.2%1967$1,17848.0%94.5%5.8%
ZIP 618222.4738.57.6%33.9%4.8%1999$1,28957.4%96.9%3.6%
ZIP 618202.0725.58.4%79.6%16.2%1983$1,08452.7%85.9%5.5%
ZIP 618012.0429.68.3%67.1%15.5%1974$1,02563.2%93.3%5.7%
ZIP 618742.5338.45.3%38.8%7.5%1997$1,26265.3%98.9%2.1%
ZIP 618152.5239.75.6%20.4%7.6%1976$1,13626.1%99.3%1.4%
ZIP 618022.1140.911.4%42.3%11.6%1983$1,11640.1%91.5%3.4%
ZIP 618752.8737.37.3%15.6%8.2%1984$1,26438.6%96.5%2.6%
ZIP 618532.9238.111.9%16.7%5.8%1994$1,16553.0%96.8%3.1%
ZIP 618782.2342.67.9%23.3%12.1%1975$81317.0%94.9%2.0%
ZIP 618842.5546.52.1%4.3%3.8%1984$85648.3%98.0%2.8%

All figures 2020–24.

Zip codes with similar populations: 91803, CA · 32301, FL · 33441, FL · 35007, AL · 62226, IL · 72404, AR · 80234, CO · 84044, UT · 90302, CA · 91316, CA

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 61821. 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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