Township · Illinois
Chemung Township, Illinois
Chemung Township, township, in McHenry County, Illinois. Chemung Township had 9,102 residents on July 1, 2025 by the Census Bureau's estimate, up 0.0% since 2020; the 2020 Census counted 9,095 and the ACS 2020-2024 5-year estimates put it at 9,051 (±39). GEOID 1711112892.
Residents, July 2025 estimate
9,102
Census Bureau estimate (no margin published)
2020 Census count: 9,095 · ACS 2020-2024: 9,051 ±39
Median household income
$67,742
±$5,217 (90% margin)
Illinois: $83,390
Median home value
$184,300
±$8,973 (90% margin)
Illinois: $263,300
Median gross rent
$1,198
±$88 (90% margin)
Illinois: $1,274
Where is Chemung Township and what county is it in?
Chemung Township is a township in McHenry County, Illinois. It covers 33.0 square miles of land, 276 residents per square mile in 2020.
4 places lie inside Chemung Township: Harvard (city, 9,469 in 2020), Chemung (CDP, 276 in 2020), Lawrence (CDP, 220 in 2020) and Big Foot Prairie (CDP, 65 in 2020).
Chemung Township is in the Chicago-Naperville-Elgin, IL-IN metropolitan statistical area, which takes in 13 counties (Census Bureau delineation, July 2023).
Source: 2024 Gazetteer and 2020 place-by-county files, U.S. Census Bureau · Census reference files
How many people live in Chemung Township, and is it growing?
The Census Bureau estimates that 9,102 people lived in Chemung Township on July 1, 2025, about level with 2020, faster than Illinois (−0.8%). The 2020 Census counted 9,095 residents. The 2020-2024 American Community Survey, a five-year sample, puts the population at 9,051 (±39).
| Measure | Chemung Township | McHenry County | Change since 2015-2019 |
|---|---|---|---|
| Total population | 9,051±39 | 312,591 | +204 |
| Households | 3,135±260 | 117,594 | no clear change |
| Average household size | 2.88±0.24 | 2.64 | no clear change |
| Housing units | 3,306±295 | 121,329 | no clear change |
Chemung Township's population since 2000
From 8,761 in 2000 to 9,102 in 2025: up 3.9%. The 2000, 2010 and 2020 figures are census counts, each for Chemung Township as it was drawn that year: a place that annexed land, or a community that has since incorporated, covered a different area then. The 2005 figure is the Census Bureau's intercensal estimate, revised to fit the 2000 and 2010 counts and drawn on 2010 boundaries; 2015 and 2025 are July 1 estimates made from the census before them.
Source: The 2000, 2010 and 2020 Census counts and the Census Bureau's population estimates (intercensal 2000-2010, Vintage 2020, Vintage 2025) · Census population estimates
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026); Census PEP Vintage 2025 (SUB-EST2025, CO-EST2025); 2020 Census P.L. 94-171 · Check it at data.census.gov
Who lives in Chemung Township?
The median resident of Chemung Township is 31.4 years old; 30.7% are under 18 and 15.8% are 65 or older. The largest group is Hispanic or Latino residents (of any race) at 53.2%, then non-Hispanic white residents at 42.0%. 17.3% of residents were born outside the United States.
| Measure | Chemung Township | McHenry County | Change since 2015-2019 |
|---|---|---|---|
| Median age | 31.4±4.3 | 40.7 | no clear change |
| Under 18 years | 30.7%±5.0 pts | 22.7% | – |
| 65 years and over | 15.8%±4.7 pts | 16.5% | – |
| Male | 50.9%±3.1 pts | 50.1% | – |
| Hispanic or Latino (any race) | 53.2%±6.7 pts | 16.1% | +10.2 pts |
| White alone, not Hispanic | 42.0%±6.6 pts | 76.1% | −13.8 pts |
| Black or African American alone, not Hispanic | 1.0%±1.1 pts | 1.4% | – |
| Asian alone, not Hispanic | 0.0%±0.4 pts | 3.0% | – |
| American Indian and Alaska Native alone, not Hispanic | 0.0%±0.4 pts | 0.0% | – |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.0%±0.4 pts | 0.0% | – |
| Two or more races, not Hispanic | 3.5%±2.4 pts | 3.2% | – |
| Some other race alone, not Hispanic | 0.3%±0.5 pts | 0.2% | – |
| Born outside the United States | 17.3%±4.4 pts | 9.9% | no clear change |
| Speak a language other than English at home (age 5+) | 42.6%±8.7 pts | 16.1% | – |
| Civilian veterans (age 18+) | 7.8%±2.6 pts | 5.6% | – |
| With a disability | 9.8%±2.6 pts | 10.1% | – |
| No health insurance coverage | 8.9%±3.2 pts | 4.5% | no clear change |
| High school graduate or higher (age 25+) | 83.2%±5.5 pts | 93.7% | – |
| Bachelor's degree or higher (age 25+) | 19.1%±4.3 pts | 35.2% | no clear change |
| Graduate or professional degree (age 25+) | 4.9%±1.9 pts | 12.0% | – |
| Lived in the same house a year earlier | 83.9%±6.5 pts | 91.4% | – |
| Moved from another state in the past year | 1.8%±1.5 pts | 1.0% | – |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profiles DP02, DP05) · Check it at data.census.gov
What do households in Chemung Township earn?
Half of Chemung Township's 3,135 households earn less than $67,742 a year (±$5,217), against $104,802 in McHenry County and $83,390 in Illinois. In 2015-2019 it was $63,121 in 2024 dollars; the margins of error cannot tell the two periods apart. 13.7% of residents live below the poverty line.
| Measure | Chemung Township | McHenry County | Change since 2015-2019 |
|---|---|---|---|
| Median household income | $67,742±$5,217 | $104,802 | no clear change |
| Mean household income | $85,113±$12,174 | $130,520 | – |
| Per capita income | $29,346±$4,405 | $49,388 | no clear change |
| People below the poverty line | 13.7%±6.9 pts | 6.2% | no clear change |
| Children under 18 below the poverty line | 22.8%±16.1 pts | 8.2% | – |
| Households receiving SNAP | 18.1%±6.9 pts | 7.4% | – |
| Households with a computer | 97.2%±1.5 pts | 97.7% | – |
| Households with a broadband subscription | 89.8%±3.3 pts | 95.4% | – |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP03) · Check it at data.census.gov
What does housing cost in Chemung Township?
Owners occupy 62.7% of Chemung Township's occupied homes and renters 37.3%. The median owner-occupied home is valued at $184,300 by its owner (±$8,973). The median renter pays $1,198 a month including utilities, and 32.7% of renters pay 35% or more of their income on rent.
| Measure | Chemung Township | McHenry County | Change since 2015-2019 |
|---|---|---|---|
| Median home value (owner-occupied) | $184,300±$8,973 | $308,100 | +$21,110 |
| Median gross rent | $1,198±$88 | $1,401 | no clear change |
| Renters paying 35% or more of income on rent | 32.7%±12.9 pts | 38.1% | no clear change |
| Median monthly owner costs, with a mortgage | $1,466±$104 | $2,137 | – |
| Owner-occupied homes | 62.7%±6.5 pts | 82.7% | no clear change |
| Renter-occupied homes | 37.3%±6.5 pts | 17.3% | – |
| Housing units | 3,306±295 | 121,329 | no clear change |
| Homeowner vacancy rate | 1.3%±2.0 pts | 0.5% | – |
| Rental vacancy rate | 0.0%±3.2 pts | 2.9% | – |
| Single-family detached homes | 69.2%±6.3 pts | 77.3% | – |
| Mobile homes | 1.0%±1.4 pts | 0.7% | – |
| Built 2020 or later | 0.0%±1.1 pts | 1.1% | – |
| Built 2010 to 2019 | 2.8%±2.7 pts | 4.4% | – |
| Built 1939 or earlier | 19.9%±4.3 pts | 8.0% | – |
| Households with no vehicle | 2.6%±1.8 pts | 3.5% | – |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP04) · Check it at data.census.gov
How do people in Chemung Township work and get to work?
73.3% of Chemung Township's workers drive alone and 5.5% work from home. The average trip to work takes 28.0 minutes. The unemployment rate in 2020-2024 averaged 7.3%.
| Measure | Chemung Township | McHenry County | Change since 2015-2019 |
|---|---|---|---|
| In the labor force (age 16+) | 68.8%±5.5 pts | 69.7% | – |
| Unemployment rate | 7.3%±3.3 pts | 4.7% | no clear change |
| Drove alone to work | 73.3%±5.6 pts | 72.9% | – |
| Carpooled | 14.5%±4.7 pts | 7.7% | – |
| Public transportation | 0.0%±0.9 pts | 1.3% | – |
| Walked | 6.4%±3.6 pts | 1.1% | – |
| Worked from home | 5.5%±2.7 pts | 16.1% | no clear change |
| Mean travel time to work | 28.0 min±4.7 | 30.1 min | no clear change |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP03) · Check it at data.census.gov
What census tracts are in Chemung Township?
2 census tracts lie mostly in Chemung Township (2020 census blocks). Their median household incomes run from $64,982 (Tract 8703.01) to $72,353 (Tract 8703.02).
| Tract | Residents, 2020-2024 | Median household income |
|---|---|---|
| Tract 8703.01McHenry County | 4,925 | $64,982 |
| Tract 8703.02McHenry County | 4,126 | $72,353 |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026); 2020 block assignment files (tract share = share of the tract's census blocks in Chemung Township) · Census block assignment files
How does Chemung Township compare with other places in Illinois?
By the Census Bureau's July 2025 estimates, Chemung Township is the 1,362nd-most populous of the 16,079 U.S. towns and townships that have one and the 162nd-most populous of 1,407 in Illinois.
Chemung Township ranks 902nd of 1,380 places in Illinois with 1,000 or more residents and a reliable estimate, by median household income.
| Measure | Rank | Of |
|---|---|---|
| Population, July 2025 estimate | 162nd | 1,407 |
| Growth 2020-2025 (PEP) | 271st | 1,347 |
| Residents per square mile | 850th | 1,383 |
| Median household income | 902nd | 1,380 |
| Per capita income | 1,207th | 1,383 |
| Median home value | 633rd | 1,379 |
| Median gross rent | 379th | 1,280 |
| Poverty rate | 341st | 1,119 |
| Bachelor's degree or higher | 935th | 1,369 |
| Median age | 1,347th | 1,383 |
| Owner-occupied share | 1,237th | 1,382 |
| Work from home | 923rd | 1,015 |
| Travel time to work | 450th | 1,382 |
Chemung Township's figures with every place in Illinois (CSV)
Every place in Illinois, sortable · Compare Chemung Township with other places
Source: PlainCities ranks computed from the American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) and PEP Vintage 2025 · How ranks are computed
How reliable are the figures for Chemung Township?
15 of the 57 figures for Chemung Township on this page carry a coefficient of variation over 40% and are marked with a ring: they come from a small sample, so read them as rough.
The American Community Survey samples about one household in eight over five years, so every figure is an estimate with a 90% margin of error (shown under each value). A ring marks an estimate whose coefficient of variation is over 40%. A change is called only when the gap between the two periods is larger than their combined 90% margin (the square root of the sum of the two squared margins), the Census Bureau's test. How to read a margin of error.
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026): margins of error as published · ACS technical documentation
How these figures are made: methodology and release checks · reading a margin of error · every state · corrections
Not on this page: crime, weather and schools for Chemung Township are other agencies' records. Crime: the FBI's Crime Data Explorer · climate: NOAA's U.S. Climate Normals · schools: the National Center for Education Statistics' school search.