Census tract · McHenry County
Census Tract 8711.15, McHenry County, Illinois
Census Tract 8711.15, GEOID 17111871115, in McHenry County, Illinois, entirely within Grafton Township. 3,835 residents in the ACS 2020-2024 5-year estimates (±891); the 2020 Census counted 2,994.
Residents, 2020-2024
3,835
±891 (90% margin)
2020 Census count: 2,994
Median household income
$99,800
±$46,731 (90% margin)
McHenry County: $104,802
Median home value
$300,800
±$26,194 (90% margin)
McHenry County: $308,100
Median gross rent
not published
McHenry County: $1,401
Where is Census Tract 8711.15?
Census Tract 8711.15 is one of 64 census tracts in McHenry County, Illinois. It covers 1.32 square miles of land, 2,265 residents per square mile in 2020. Its GEOID, 17111871115, names it uniquely (how tract numbers and GEOIDs work).
| Place | Share of the tract |
|---|---|
| Grafton Township | 100% |
| Huntley | 86% |
4 census tracts border Census Tract 8711.15: Tract 8507.07 in Kane County ($135,029), Tract 8711.11 ($166,609), Tract 8711.14 ($135,750) and Tract 8715.01 ($78,070). The figure in brackets is each tract's median household income.
Whether a tract counts as low- or moderate-income for bank lending (the Community Reinvestment Act) is set by the FFIEC against its metro area's family income: look it up in the FFIEC census geocoder.
Source: 2024 Gazetteer and 2020 block assignment files, U.S. Census Bureau · Census reference files
How many people live in Census Tract 8711.15?
The 2020-2024 American Community Survey puts Census Tract 8711.15's population at 3,835 (±891) in 1,396 households; the 2020 Census counted 2,994 residents and 1,101 housing units.
| Measure | Tract 8711.15 | Grafton Township |
|---|---|---|
| Total population | 3,835 ±891 | 56,996 |
| Households | 1,396 ±336 | 19,645 |
| Average household size | 2.75 ±0.28 | 2.90 |
| Housing units | 1,412 ±338 | 19,864 |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026); 2020 Census P.L. 94-171 · Check it at data.census.gov
Who lives in Census Tract 8711.15?
The median resident of Census Tract 8711.15 is 36.6 years old; 28.4% are under 18 and 6.2% are 65 or older. The largest group is non-Hispanic white residents at 61.5%, then Hispanic or Latino residents (of any race) at 24.4%. 20.3% of residents were born outside the United States.
| Measure | Tract 8711.15 | Grafton Township |
|---|---|---|
| Median age | 36.6 ±1.2 | 39.7 |
| Under 18 years | 28.4% ±6.6 pts | 25.9% |
| 65 years and over | 6.2% ±2.4 pts | 14.9% |
| Hispanic or Latino (any race) | 24.4% ±10.0 pts | 13.2% |
| White alone, not Hispanic | 61.5% ±12.2 pts | 74.7% |
| Black or African American alone, not Hispanic | 5.2% ±7.5 pts | 2.5% |
| Asian alone, not Hispanic | 5.6% ±5.7 pts | 6.9% |
| American Indian and Alaska Native alone, not Hispanic | 0.0% ±1.0 pts | 0.0% |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.0% ±1.0 pts | 0.0% |
| Two or more races, not Hispanic | 3.3% ±3.3 pts | 2.5% |
| Some other race alone, not Hispanic | 0.0% ±1.0 pts | 0.2% |
| Born outside the United States | 20.3% ±8.3 pts | 12.5% |
| Speak a language other than English at home (age 5+) | 14.6% ±8.8 pts | 16.3% |
| Civilian veterans (age 18+) | 8.7% ±8.0 pts | 5.1% |
| With a disability | 7.8% ±4.2 pts | 8.8% |
| No health insurance coverage | 1.0% ±1.4 pts | 3.3% |
| High school graduate or higher (age 25+) | 96.6% ±5.4 pts | 96.3% |
| Bachelor's degree or higher (age 25+) | 29.7% ±8.9 pts | 44.0% |
| Graduate or professional degree (age 25+) | 9.4% ±4.7 pts | 16.1% |
| Lived in the same house a year earlier | 79.1% ±13.5 pts | 93.2% |
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 Census Tract 8711.15 earn?
Half of the 1,396 households in Census Tract 8711.15 earn less than $99,800 a year (±$46,731), against $104,802 across McHenry County: 39th highest of the county's 64 tracts with a reliable estimate.
| Measure | Tract 8711.15 | Grafton Township |
|---|---|---|
| Median household income | $99,800 ±$46,731 | $130,767 |
| Mean household income | $122,133 ±$30,427 | $152,470 |
| Per capita income | $41,949 ±$8,802 | $52,894 |
| People below the poverty line | 14.8% ±15.6 pts | 4.4% |
| Children under 18 below the poverty line | 29.5% ±26.4 pts | 5.4% |
| Households receiving SNAP | 20.0% ±18.3 pts | 5.0% |
| Households with a computer | 99.1% ±1.3 pts | 97.2% |
| Households with a broadband subscription | 98.0% ±2.1 pts | 95.3% |
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 Census Tract 8711.15?
Owners occupy 61.2% of Census Tract 8711.15's occupied homes and renters 38.8%. The median owner-occupied home is valued at $300,800 by its owner (±$26,194).
| Measure | Tract 8711.15 | Grafton Township |
|---|---|---|
| Median home value (owner-occupied) | $300,800 ±$26,194 | $361,800 |
| Renters paying 35% or more of income on rent | 3.9% ±6.3 pts | 22.9% |
| Median monthly owner costs, with a mortgage | $2,296 ±$233 | $2,384 |
| Owner-occupied homes | 61.2% ±18.1 pts | 91.8% |
| Renter-occupied homes | 38.8% ±18.1 pts | 8.2% |
| Housing units | 1,412 ±338 | 19,864 |
| Single-family detached homes | 45.0% ±15.1 pts | 82.4% |
| Mobile homes | 0.0% ±2.6 pts | 0.0% |
| Built 2020 or later | 0.0% ±2.6 pts | 1.6% |
| Built 2010 to 2019 | 0.5% ±1.0 pts | 7.9% |
| Built 1939 or earlier | 1.3% ±1.5 pts | 2.0% |
| Households with no vehicle | 0.0% ±2.6 pts | 1.2% |
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 Census Tract 8711.15 get to work?
87.9% of Census Tract 8711.15's workers drive alone. The average trip to work takes 25.6 minutes.
| Measure | Tract 8711.15 | Grafton Township |
|---|---|---|
| In the labor force (age 16+) | 76.6% ±5.3 pts | 70.5% |
| Unemployment rate | 1.5% ±2.9 pts | 3.1% |
| Drove alone to work | 87.9% ±6.6 pts | 72.4% |
| Carpooled | 3.5% ±3.6 pts | 6.1% |
| Public transportation | 0.2% ±0.7 pts | 1.3% |
| Walked | 1.7% ±2.1 pts | 0.9% |
| Worked from home | 5.6% ±4.1 pts | 18.3% |
| Mean travel time to work | 25.6 min ±2.8 | 30.6 min |
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
How does Census Tract 8711.15 compare with the other tracts in McHenry County?
Among McHenry County's tracts with a reliable estimate, Census Tract 8711.15 ranks as shown below (1 = highest).
| Measure | In McHenry County |
|---|---|
| Population | 54th of 64 |
| Residents per square mile | 21st of 64 |
| Median household income | 39th of 64 |
| Per capita income | 47th of 64 |
| Median home value | 38th of 64 |
| Bachelor's degree or higher | 40th of 64 |
| Median age | 56th of 64 |
| Owner-occupied share | 60th of 64 |
The tracts next to it on McHenry County's income ladder
| Tract | Rank | Median household income |
|---|---|---|
| Tract 8710.03 | 36th | $102,826±$13,925 · within the margin of this tract |
| Tract 8708.10 | 37th | $101,116±$14,215 · within the margin of this tract |
| Tract 8706.05 | 38th | $100,380±$14,421 · within the margin of this tract |
| Tract 8711.15 | 39th | $99,800±$46,731 |
| Tract 8708.13 | 40th | $99,219±$25,138 · within the margin of this tract |
| Tract 8710.04 | 41st | $97,694±$39,088 · within the margin of this tract |
| Tract 8701.03 | 42nd | $96,000±$25,368 · within the margin of this tract |
"Within the margin": the two incomes differ by less than their combined 90% margins, so the survey cannot say which is higher and the ranks between them are not firm.
Source: PlainCities ranks computed from the American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) · How ranks are computed
How reliable are the figures for Census Tract 8711.15?
4 of the 17 figures for Census Tract 8711.15 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.
A census tract's figures rest on a few hundred sampled households over five years, so its margins are wider than a city's. Two tracts differ only when the gap between them is larger than their combined 90% margin (the square root of the sum of the two squared margins). 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 · Check it at data.census.gov
How these figures are made: methodology and release checks · reading a margin of error · every state · corrections