Census tract · Lake County
Census Tract 8634, Lake County, Illinois
Census Tract 8634, GEOID 17097863400, in Lake County, Illinois, mostly within Lake Forest (99% of its census blocks). 4,396 residents in the ACS 2020-2024 5-year estimates (±513); the 2020 Census counted 4,276.
Residents, 2020-2024
4,396
±513 (90% margin)
2020 Census count: 4,276
Median household income
$245,375
±$94,219 (90% margin)
Lake County: $110,416
Median home value
$929,400
±$70,895 (90% margin)
Lake County: $345,700
Median gross rent
$1,955
±$866 (90% margin)
Lake County: $1,477
Where is Census Tract 8634?
Census Tract 8634 is one of 160 census tracts in Lake County, Illinois. It covers 2.00 square miles of land, 2,143 residents per square mile in 2020. Its GEOID, 17097863400, names it uniquely (how tract numbers and GEOIDs work).
| Place | Share of the tract |
|---|---|
| Lake Forest | 99% |
| Shields Township | 99% |
3 census tracts border Census Tract 8634: Tract 8633 ($243,750), Tract 8635 ($197,431) and Tract 8650 ($242,000). 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 8634?
The 2020-2024 American Community Survey puts Census Tract 8634's population at 4,396 (±513) in 1,297 households; the 2020 Census counted 4,276 residents and 1,393 housing units.
| Measure | Tract 8634 | Lake Forest |
|---|---|---|
| Total population | 4,396 ±513 | 19,416 |
| Households | 1,297 ±239 | 6,900 |
| Average household size | 2.57 ±0.20 | 2.63 |
| Housing units | 1,443 ±219 | 7,282 |
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 8634?
The median resident of Census Tract 8634 is 27.5 years old; 15.9% are under 18 and 14.6% are 65 or older. The largest group is non-Hispanic white residents at 75.6%, then Hispanic or Latino residents (of any race) at 9.1%. 14.7% of residents were born outside the United States.
| Measure | Tract 8634 | Lake Forest |
|---|---|---|
| Median age | 27.5 ±0.4 | 46.1 |
| Under 18 years | 15.9% ±2.9 pts | 19.2% |
| 65 years and over | 14.6% ±3.9 pts | 26.7% |
| Hispanic or Latino (any race) | 9.1% ±4.7 pts | 6.1% |
| White alone, not Hispanic | 75.6% ±6.6 pts | 80.2% |
| Black or African American alone, not Hispanic | 3.1% ±2.1 pts | 1.0% |
| Asian alone, not Hispanic | 7.0% ±3.0 pts | 6.4% |
| American Indian and Alaska Native alone, not Hispanic | 0.0% ±0.8 pts | 0.0% |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.0% ±0.8 pts | 0.0% |
| Two or more races, not Hispanic | 4.8% ±3.1 pts | 5.4% |
| Some other race alone, not Hispanic | 0.4% ±0.7 pts | 0.9% |
| Born outside the United States | 14.7% ±5.3 pts | 10.8% |
| Speak a language other than English at home (age 5+) | 17.0% ±4.6 pts | 13.0% |
| Civilian veterans (age 18+) | 1.2% ±0.8 pts | 2.7% |
| With a disability | 18.2% ±12.0 pts | 12.9% |
| No health insurance coverage | 2.4% ±1.4 pts | 1.8% |
| High school graduate or higher (age 25+) | 96.1% ±3.1 pts | 98.1% |
| Bachelor's degree or higher (age 25+) | 83.0% ±7.2 pts | 80.5% |
| Graduate or professional degree (age 25+) | 48.5% ±14.2 pts | 41.9% |
| Lived in the same house a year earlier | 72.8% ±10.8 pts | 84.4% |
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 8634 earn?
Half of the 1,297 households in Census Tract 8634 earn less than $245,375 a year (±$94,219), against $110,416 across Lake County: 6th highest of the county's 155 tracts with a reliable estimate. 7.6% of residents live below the poverty line.
| Measure | Tract 8634 | Lake Forest |
|---|---|---|
| Median household income | $245,375 ±$94,219 | $235,081 |
| Mean household income | $262,690 ±$34,655 | $303,251 |
| Per capita income | $79,596 ±$12,568 | $109,918 |
| People below the poverty line | 7.6% ±4.3 pts | 3.5% |
| Children under 18 below the poverty line | 8.7% ±9.4 pts | 4.0% |
| Households receiving SNAP | 4.2% ±3.5 pts | 1.4% |
| Households with a computer | 100.0% ±2.8 pts | 98.2% |
| Households with a broadband subscription | 95.8% ±4.6 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 Census Tract 8634?
Owners occupy 79.6% of Census Tract 8634's occupied homes and renters 20.4%. The median owner-occupied home is valued at $929,400 by its owner (±$70,895). The median renter pays $1,955 a month including utilities, and 30.2% of renters pay 35% or more of their income on rent.
| Measure | Tract 8634 | Lake Forest |
|---|---|---|
| Median home value (owner-occupied) | $929,400 ±$70,895 | $938,300 |
| Median gross rent | $1,955 ±$866 | $1,815 |
| Renters paying 35% or more of income on rent | 30.2% ±19.0 pts | 32.9% |
| Median monthly owner costs, with a mortgage | $4,000 or more | $4,000 or more |
| Owner-occupied homes | 79.6% ±8.0 pts | 88.8% |
| Renter-occupied homes | 20.4% ±8.0 pts | 11.2% |
| Housing units | 1,443 ±219 | 7,282 |
| Single-family detached homes | 74.0% ±8.7 pts | 76.6% |
| Mobile homes | 0.0% ±2.6 pts | 0.1% |
| Built 2020 or later | 0.0% ±2.6 pts | 0.7% |
| Built 2010 to 2019 | 19.4% ±17.5 pts | 5.5% |
| Built 1939 or earlier | 38.0% ±11.3 pts | 18.0% |
| Households with no vehicle | 1.9% ±3.0 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 8634 get to work?
35.4% of Census Tract 8634's workers drive alone and 22.0% work from home. The average trip to work takes 35.2 minutes.
| Measure | Tract 8634 | Lake Forest |
|---|---|---|
| In the labor force (age 16+) | 64.6% ±6.5 pts | 54.1% |
| Unemployment rate | 1.1% ±1.3 pts | 1.8% |
| Drove alone to work | 35.4% ±12.4 pts | 46.1% |
| Carpooled | 1.1% ±1.4 pts | 1.8% |
| Public transportation | 24.0% ±20.8 pts | 12.3% |
| Walked | 15.3% ±4.9 pts | 5.5% |
| Worked from home | 22.0% ±8.7 pts | 30.3% |
| Mean travel time to work | 35.2 min ±14.1 | 31.3 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 8634 compare with the other tracts in Lake County?
Among Lake County's tracts with a reliable estimate, Census Tract 8634 ranks as shown below (1 = highest).
| Measure | In Lake County | In Lake Forest |
|---|---|---|
| Population | 76th of 159 | 3rd of 6 |
| Residents per square mile | 82nd of 159 | 1st of 6 |
| Median household income | 6th of 155 | 3rd of 6 |
| Per capita income | 38th of 159 | 6th of 6 |
| Median home value | 5th of 154 | 4th of 6 |
| Median gross rent | 33rd of 138 | 2nd of 4 |
| Poverty rate | 54th of 84 | 1st of 2 |
| Bachelor's degree or higher | 11th of 154 | 2nd of 6 |
| Median age | 154th of 159 | 6th of 6 |
| Owner-occupied share | 74th of 155 | 6th of 6 |
The tracts next to it on Lake County's income ladder
| Tract | Rank | Median household income |
|---|---|---|
| Tract 8656 | 5th | $246,250±$91,661 · within the margin of this tract |
| Tract 8634 | 6th | $245,375±$94,219 |
| Tract 8633 | 7th | $243,750±$52,782 · within the margin of this tract |
| Tract 8650 | 8th | $242,000±$68,519 · within the margin of this tract |
| Tract 8644.11 | 9th | $236,739±$25,568 · 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 8634?
1 of the 18 figures for Census Tract 8634 on this page carries a coefficient of variation over 40% and is 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