Census tract · Lake County
Census Tract 8637.02, Lake County, Illinois
Census Tract 8637.02, GEOID 17097863702, in Lake County, Illinois, entirely within Libertyville Township. 4,127 residents in the ACS 2020-2024 5-year estimates (±322); the 2020 Census counted 4,045.
Residents, 2020-2024
4,127
±322 (90% margin)
2020 Census count: 4,045
Median household income
$93,542
±$12,730 (90% margin)
Lake County: $110,416
Median home value
$523,100
±$55,650 (90% margin)
Lake County: $345,700
Median gross rent
$1,704
±$238 (90% margin)
Lake County: $1,477
Where is Census Tract 8637.02?
Census Tract 8637.02 is one of 160 census tracts in Lake County, Illinois. It covers 3.93 square miles of land, 1,030 residents per square mile in 2020. Its GEOID, 17097863702, names it uniquely (how tract numbers and GEOIDs work).
| Place | Share of the tract |
|---|---|
| Libertyville Township | 100% |
| Green Oaks | 52% |
| Knollwood | 10% |
| North Chicago | 8% |
| Lake Bluff | 2% |
4 census tracts border Census Tract 8637.02: Tract 8632.02 ($163,190), Tract 8636.01 ($207,463), Tract 8637.01 ($168,100) and Tract 8662 ($177,500). 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 8637.02?
The 2020-2024 American Community Survey puts Census Tract 8637.02's population at 4,127 (±322) in 1,862 households; the 2020 Census counted 4,045 residents and 1,832 housing units.
| Measure | Tract 8637.02 | Libertyville Township |
|---|---|---|
| Total population | 4,127 ±322 | 54,192 |
| Households | 1,862 ±244 | 20,451 |
| Average household size | 2.22 ±0.20 | 2.60 |
| Housing units | 1,924 ±237 | 21,377 |
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 8637.02?
The median resident of Census Tract 8637.02 is 40.8 years old; 19.7% are under 18 and 24.5% are 65 or older. The largest group is non-Hispanic white residents at 63.0%, then non-Hispanic Asian residents at 15.3%. 22.7% of residents were born outside the United States.
| Measure | Tract 8637.02 | Libertyville Township |
|---|---|---|
| Median age | 40.8 ±4.4 | 41.3 |
| Under 18 years | 19.7% ±3.3 pts | 23.8% |
| 65 years and over | 24.5% ±5.7 pts | 16.9% |
| Hispanic or Latino (any race) | 11.6% ±7.0 pts | 17.2% |
| White alone, not Hispanic | 63.0% ±7.7 pts | 64.3% |
| Black or African American alone, not Hispanic | 4.8% ±3.1 pts | 1.9% |
| Asian alone, not Hispanic | 15.3% ±4.9 pts | 12.1% |
| American Indian and Alaska Native alone, not Hispanic | 0.0% ±0.9 pts | 0.1% |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.3% ±0.5 pts | 0.1% |
| Two or more races, not Hispanic | 4.0% ±2.2 pts | 3.9% |
| Some other race alone, not Hispanic | 1.0% ±1.1 pts | 0.3% |
| Born outside the United States | 22.7% ±5.3 pts | 23.0% |
| Speak a language other than English at home (age 5+) | 31.0% ±8.0 pts | 32.5% |
| Civilian veterans (age 18+) | 3.9% ±2.2 pts | 3.8% |
| With a disability | 9.4% ±3.1 pts | 7.9% |
| No health insurance coverage | 2.5% ±1.7 pts | 6.2% |
| High school graduate or higher (age 25+) | 90.0% ±7.3 pts | 95.1% |
| Bachelor's degree or higher (age 25+) | 58.3% ±8.0 pts | 62.3% |
| Graduate or professional degree (age 25+) | 23.9% ±5.3 pts | 27.1% |
| Lived in the same house a year earlier | 81.9% ±6.0 pts | 87.0% |
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 Census Tract 8637.02 earn?
Half of the 1,862 households in Census Tract 8637.02 earn less than $93,542 a year (±$12,730), against $110,416 across Lake County: 104th highest of the county's 155 tracts with a reliable estimate. 6.4% of residents live below the poverty line.
| Measure | Tract 8637.02 | Libertyville Township |
|---|---|---|
| Median household income | $93,542 ±$12,730 | $134,398 |
| Mean household income | $148,718 ±$20,737 | $185,416 |
| Per capita income | $68,493 ±$8,354 | $70,816 |
| People below the poverty line | 6.4% ±3.3 pts | 6.8% |
| Children under 18 below the poverty line | 0.0% ±4.5 pts | 8.7% |
| Households receiving SNAP | 0.8% ±1.2 pts | 5.3% |
| Households with a computer | 98.1% ±1.4 pts | 97.9% |
| Households with a broadband subscription | 97.3% ±1.7 pts | 95.2% |
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 8637.02?
Owners occupy 51.6% of Census Tract 8637.02's occupied homes and renters 48.4%. The median owner-occupied home is valued at $523,100 by its owner (±$55,650). The median renter pays $1,704 a month including utilities, and 36.2% of renters pay 35% or more of their income on rent.
| Measure | Tract 8637.02 | Libertyville Township |
|---|---|---|
| Median home value (owner-occupied) | $523,100 ±$55,650 | $461,700 |
| Median gross rent | $1,704 ±$238 | $1,690 |
| Renters paying 35% or more of income on rent | 36.2% ±17.0 pts | 38.9% |
| Median monthly owner costs, with a mortgage | $2,862 ±$460 | $2,985 |
| Owner-occupied homes | 51.6% ±9.0 pts | 73.1% |
| Renter-occupied homes | 48.4% ±9.0 pts | 26.9% |
| Housing units | 1,924 ±237 | 21,377 |
| Single-family detached homes | 33.9% ±6.3 pts | 55.2% |
| Mobile homes | 0.0% ±1.9 pts | 0.0% |
| Built 2020 or later | 0.0% ±1.9 pts | 0.9% |
| Built 2010 to 2019 | 13.1% ±6.1 pts | 6.8% |
| Built 1939 or earlier | 10.9% ±11.3 pts | 5.4% |
| Households with no vehicle | 7.2% ±5.1 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 Census Tract 8637.02 get to work?
61.4% of Census Tract 8637.02's workers drive alone and 30.6% work from home. The average trip to work takes 25.7 minutes.
| Measure | Tract 8637.02 | Libertyville Township |
|---|---|---|
| In the labor force (age 16+) | 62.4% ±6.0 pts | 67.1% |
| Unemployment rate | 3.7% ±2.7 pts | 3.7% |
| Drove alone to work | 61.4% ±7.8 pts | 64.1% |
| Carpooled | 4.8% ±3.0 pts | 6.4% |
| Public transportation | 1.2% ±1.4 pts | 2.0% |
| Walked | 0.4% ±0.7 pts | 1.5% |
| Worked from home | 30.6% ±7.9 pts | 24.8% |
| Mean travel time to work | 25.7 min ±4.3 | 26.4 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 8637.02 compare with the other tracts in Lake County?
Among Lake County's tracts with a reliable estimate, Census Tract 8637.02 ranks as shown below (1 = highest).
| Measure | In Lake County |
|---|---|
| Population | 85th of 159 |
| Residents per square mile | 130th of 159 |
| Median household income | 104th of 155 |
| Per capita income | 51st of 159 |
| Median home value | 38th of 154 |
| Median gross rent | 61st of 138 |
| Poverty rate | 62nd of 84 |
| Bachelor's degree or higher | 67th of 154 |
| Median age | 74th of 159 |
| Owner-occupied share | 137th of 155 |
The tracts next to it on Lake County's income ladder
| Tract | Rank | Median household income |
|---|---|---|
| Tract 8608.06 | 101st | $96,735±$13,012 · within the margin of this tract |
| Tract 8601.03 | 102nd | $95,625±$9,389 · within the margin of this tract |
| Tract 8601.06 | 103rd | $94,917±$26,777 · within the margin of this tract |
| Tract 8637.02 | 104th | $93,542±$12,730 |
| Tract 8611.05 | 105th | $92,813±$20,858 · within the margin of this tract |
| Tract 8617.02 | 106th | $92,702±$27,473 · within the margin of this tract |
| Tract 8609.05 | 107th | $92,420±$13,860 · 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 8637.02?
Every figure for Census Tract 8637.02 on this page has a coefficient of variation under 40%, the Census Bureau's threshold for a usable estimate.
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