Census tract · Lake County
Census Tract 8646.02, Lake County, Illinois
Census Tract 8646.02, GEOID 17097864602, in Lake County, Illinois, entirely within Lake Forest. 3,772 residents in the ACS 2020-2024 5-year estimates (±341); the 2020 Census counted 3,824.
Residents, 2020-2024
3,772
±341 (90% margin)
2020 Census count: 3,824
Median household income
$250,000 or more
The survey's top or bottom value; no margin is published
Lake County: $110,416
Median home value
$959,100
±$62,220 (90% margin)
Lake County: $345,700
Median gross rent
not published
Lake County: $1,477
Where is Census Tract 8646.02?
Census Tract 8646.02 is one of 160 census tracts in Lake County, Illinois. It covers 2.29 square miles of land, 1,673 residents per square mile in 2020. Its GEOID, 17097864602, names it uniquely (how tract numbers and GEOIDs work).
| Place | Share of the tract |
|---|---|
| Lake Forest | 100% |
| West Deerfield Township | 91% |
| Moraine Township | 9% |
7 census tracts border Census Tract 8646.02: Tract 8635 ($197,431), Tract 8646.01 ($250,000 or more), Tract 8647 ($220,156), Tract 8650 ($242,000), Tract 8652 ($105,637), Tract 8653 ($219,076) and Tract 8655.01 ($105,250). 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 8646.02?
The 2020-2024 American Community Survey puts Census Tract 8646.02's population at 3,772 (±341) in 1,226 households; the 2020 Census counted 3,824 residents and 1,389 housing units.
| Measure | Tract 8646.02 | Lake Forest |
|---|---|---|
| Total population | 3,772 ±341 | 19,416 |
| Households | 1,226 ±90 | 6,900 |
| Average household size | 3.08 ±0.30 | 2.63 |
| Housing units | 1,226 ±90 | 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 8646.02?
The median resident of Census Tract 8646.02 is 43.0 years old; 32.0% are under 18 and 19.6% are 65 or older. The largest group is non-Hispanic white residents at 75.2%, then non-Hispanic residents of two or more races at 11.3%. 8.4% of residents were born outside the United States.
| Measure | Tract 8646.02 | Lake Forest |
|---|---|---|
| Median age | 43.0 ±3.2 | 46.1 |
| Under 18 years | 32.0% ±3.8 pts | 19.2% |
| 65 years and over | 19.6% ±4.8 pts | 26.7% |
| Hispanic or Latino (any race) | 6.9% ±4.7 pts | 6.1% |
| White alone, not Hispanic | 75.2% ±10.0 pts | 80.2% |
| Black or African American alone, not Hispanic | 0.1% ±0.2 pts | 1.0% |
| Asian alone, not Hispanic | 6.5% ±4.6 pts | 6.4% |
| 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 | 11.3% ±8.1 pts | 5.4% |
| Some other race alone, not Hispanic | 0.0% ±1.0 pts | 0.9% |
| Born outside the United States | 8.4% ±3.1 pts | 10.8% |
| Speak a language other than English at home (age 5+) | 13.9% ±6.3 pts | 13.0% |
| Civilian veterans (age 18+) | 3.9% ±2.5 pts | 2.7% |
| With a disability | 8.9% ±3.0 pts | 12.9% |
| No health insurance coverage | 1.3% ±1.2 pts | 1.8% |
| High school graduate or higher (age 25+) | 99.5% ±0.8 pts | 98.1% |
| Bachelor's degree or higher (age 25+) | 83.8% ±4.8 pts | 80.5% |
| Graduate or professional degree (age 25+) | 42.8% ±5.2 pts | 41.9% |
| Lived in the same house a year earlier | 93.6% ±3.0 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 8646.02 earn?
Half of the 1,226 households in Census Tract 8646.02 earn less than $250,000 or more a year (), against $110,416 across Lake County: 1st highest of the county's 155 tracts with a reliable estimate.
| Measure | Tract 8646.02 | Lake Forest |
|---|---|---|
| Median household income | $250,000 or more | $235,081 |
| Mean household income | $329,382 ±$45,571 | $303,251 |
| Per capita income | $111,097 ±$15,564 | $109,918 |
| People below the poverty line | 0.8% ±0.8 pts | 3.5% |
| Children under 18 below the poverty line | 0.0% ±3.1 pts | 4.0% |
| Households receiving SNAP | 0.3% ±0.5 pts | 1.4% |
| Households with a computer | 98.1% ±1.6 pts | 98.2% |
| Households with a broadband subscription | 97.1% ±2.3 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 Census Tract 8646.02?
Owners occupy 99.3% of Census Tract 8646.02's occupied homes and renters 0.7%. The median owner-occupied home is valued at $959,100 by its owner (±$62,220).
| Measure | Tract 8646.02 | Lake Forest |
|---|---|---|
| Median home value (owner-occupied) | $959,100 ±$62,220 | $938,300 |
| Renters paying 35% or more of income on rent | 100.0% ±100.0 pts | 32.9% |
| Median monthly owner costs, with a mortgage | $4,000 or more | $4,000 or more |
| Owner-occupied homes | 99.3% ±1.2 pts | 88.8% |
| Renter-occupied homes | 0.7% ±1.2 pts | 11.2% |
| Housing units | 1,226 ±90 | 7,282 |
| Single-family detached homes | 100.0% ±3.0 pts | 76.6% |
| Mobile homes | 0.0% ±3.0 pts | 0.1% |
| Built 2020 or later | 0.0% ±3.0 pts | 0.7% |
| Built 2010 to 2019 | 1.4% ±1.6 pts | 5.5% |
| Built 1939 or earlier | 3.9% ±3.9 pts | 18.0% |
| Households with no vehicle | 1.1% ±1.7 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 8646.02 get to work?
48.9% of Census Tract 8646.02's workers drive alone and 41.2% work from home. The average trip to work takes 25.9 minutes.
| Measure | Tract 8646.02 | Lake Forest |
|---|---|---|
| In the labor force (age 16+) | 55.9% ±6.6 pts | 54.1% |
| Unemployment rate | 2.1% ±1.9 pts | 1.8% |
| Drove alone to work | 48.9% ±9.1 pts | 46.1% |
| Carpooled | 3.1% ±2.6 pts | 1.8% |
| Public transportation | 4.9% ±3.5 pts | 12.3% |
| Walked | 1.4% ±1.5 pts | 5.5% |
| Worked from home | 41.2% ±9.7 pts | 30.3% |
| Mean travel time to work | 25.9 min ±3.0 | 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 8646.02 compare with the other tracts in Lake County?
Among Lake County's tracts with a reliable estimate, Census Tract 8646.02 ranks as shown below (1 = highest).
| Measure | In Lake County | In Lake Forest |
|---|---|---|
| Population | 99th of 159 | 4th of 6 |
| Residents per square mile | 105th of 159 | 2nd of 6 |
| Median household income | 1st of 155 | 1st of 6 |
| Per capita income | 8th of 159 | 4th of 6 |
| Median home value | 4th of 154 | 3rd of 6 |
| Bachelor's degree or higher | 9th of 154 | 1st of 6 |
| Median age | 45th of 159 | 5th of 6 |
| Owner-occupied share | 3rd of 155 | 1st of 6 |
The tracts next to it on Lake County's income ladder
| Tract | Rank | Median household income |
|---|---|---|
| Tract 8646.01 | 1st | $250,000 or more |
| Tract 8646.02 | 1st | $250,000 or more |
| Tract 8657 | 1st | $250,000 or more |
| Tract 8658.02 | 1st | $250,000 or more |
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 8646.02?
4 of the 17 figures for Census Tract 8646.02 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