Census-designated place · Illinois
Long Lake, Illinois
Long Lake, census-designated place, in Lake County, Illinois. Long Lake had 3,663 residents in the 2020 Census, a full count; the ACS 2020-2024 5-year estimates put it at 3,307 (±655). GEOID 1744550.
Residents, 2020 Census
3,663
Census count or controlled total
ACS 2020-2024 estimate: 3,307 ±655
Median household income
$104,621
±$12,727 (90% margin)
Illinois: $83,390
Median home value
$220,100
±$12,697 (90% margin)
Illinois: $263,300
Median gross rent
$1,530
±$615 (90% margin)
Illinois: $1,274
Where is Long Lake and what county is it in?
Long Lake is a census-designated place: an unincorporated community the Census Bureau draws for counting, with no city government of its own, in Lake County, Illinois. It covers 1.2 square miles of land, 3,104 residents per square mile in 2020.
Long Lake is in the Chicago-Naperville-Elgin, IL-IN metropolitan statistical area, which takes in 13 counties (Census Bureau delineation, July 2023).
Long Lake lies mostly within Grant Township (Lake County) and reaches into Avon Township and Lake Villa Township, towns or townships with their own local government (2020 census blocks).
Source: 2024 Gazetteer and 2020 place-by-county files, U.S. Census Bureau · Census reference files
How many people live in Long Lake, and is it growing?
The 2020 Census counted 3,663 residents in Long Lake, a full count rather than a sample. The 2020-2024 American Community Survey, a sample, estimates 3,307 (±655).
The Census Bureau publishes yearly population estimates for incorporated places only; Long Lake is a census-designated place, so its figures come from the ACS and the 2020 Census.
| Measure | Long Lake | Lake County | Change since 2015-2019 |
|---|---|---|---|
| Total population | 3,307 ±655 | 714,223 | no clear change |
| Households | 1,133 ±222 | 258,455 | no clear change |
| Average household size | 2.92 ±0.33 | 2.69 | no clear change |
| Housing units | 1,273 ±223 | 270,618 | no clear change |
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 Long Lake?
The median resident of Long Lake is 33.9 years old; 17.6% are under 18 and 9.0% are 65 or older. The largest group is non-Hispanic white residents at 47.6%, then Hispanic or Latino residents (of any race) at 47.4%. 19.4% of residents were born outside the United States.
| Measure | Long Lake | Lake County | Change since 2015-2019 |
|---|---|---|---|
| Median age | 33.9 ±9.7 | 39.1 | no clear change |
| Under 18 years | 17.6% ±5.1 pts | 23.3% | – |
| 65 years and over | 9.0% ±4.3 pts | 15.8% | – |
| Male | 55.6% ±5.3 pts | 50.3% | – |
| Hispanic or Latino (any race) | 47.4% ±11.5 pts | 24.9% | +19.7 pts |
| White alone, not Hispanic | 47.6% ±10.9 pts | 56.2% | −24.7 pts |
| Black or African American alone, not Hispanic | 1.7% ±2.5 pts | 6.3% | – |
| Asian alone, not Hispanic | 0.4% ±0.9 pts | 8.6% | – |
| American Indian and Alaska Native alone, not Hispanic | 0.1% ±0.2 pts | 0.1% | – |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.0% ±1.1 pts | 0.0% | – |
| Two or more races, not Hispanic | 2.8% ±3.5 pts | 3.3% | – |
| Some other race alone, not Hispanic | 0.0% ±1.1 pts | 0.6% | – |
| Born outside the United States | 19.4% ±5.1 pts | 19.8% | no clear change |
| Speak a language other than English at home (age 5+) | 43.2% ±10.7 pts | 31.4% | – |
| Civilian veterans (age 18+) | 3.2% ±2.9 pts | 4.7% | – |
| With a disability | 6.7% ±3.9 pts | 9.8% | – |
| No health insurance coverage | 18.6% ±6.7 pts | 6.9% | no clear change |
| High school graduate or higher (age 25+) | 76.9% ±9.4 pts | 90.6% | – |
| Bachelor's degree or higher (age 25+) | 17.5% ±7.2 pts | 47.7% | no clear change |
| Graduate or professional degree (age 25+) | 2.7% ±2.4 pts | 20.1% | – |
| Lived in the same house a year earlier | 88.8% ±7.6 pts | 88.4% | – |
| Moved from another state in the past year | 0.4% ±0.7 pts | 2.9% | – |
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 Long Lake earn?
Half of Long Lake's 1,133 households earn less than $104,621 a year (±$12,727), against $110,416 in Lake County and $83,390 in Illinois. In 2015-2019 it was $108,172 in 2024 dollars; the margins of error cannot tell the two periods apart.
| Measure | Long Lake | Lake County | Change since 2015-2019 |
|---|---|---|---|
| Median household income | $104,621 ±$12,727 | $110,416 | no clear change |
| Mean household income | $108,659 ±$19,319 | $155,726 | – |
| Per capita income | $36,811 ±$7,300 | $57,153 | no clear change |
| People below the poverty line | 7.5% ±8.4 pts | 8.3% | – |
| Children under 18 below the poverty line | 15.3% ±21.2 pts | 11.5% | – |
| Households receiving SNAP | 8.5% ±5.8 pts | 9.4% | – |
| Households with a computer | 99.2% ±1.0 pts | 97.2% | – |
| Households with a broadband subscription | 96.6% ±3.9 pts | 94.3% | – |
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 Long Lake?
Owners occupy 82.5% of Long Lake's occupied homes and renters 17.5%. The median owner-occupied home is valued at $220,100 by its owner (±$12,697). The median renter pays $1,530 a month including utilities.
| Measure | Long Lake | Lake County | Change since 2015-2019 |
|---|---|---|---|
| Median home value (owner-occupied) | $220,100 ±$12,697 | $345,700 | +$28,358 |
| Median gross rent | $1,530 ±$615 | $1,477 | no clear change |
| Renters paying 35% or more of income on rent | 46.0% ±32.7 pts | 40.1% | – |
| Median monthly owner costs, with a mortgage | $1,614 ±$369 | $2,503 | – |
| Owner-occupied homes | 82.5% ±8.4 pts | 74.8% | no clear change |
| Renter-occupied homes | 17.5% ±8.4 pts | 25.2% | – |
| Housing units | 1,273 ±223 | 270,618 | no clear change |
| Homeowner vacancy rate | 9.0% ±9.4 pts | 0.9% | – |
| Rental vacancy rate | 0.0% ±17.2 pts | 3.7% | – |
| Single-family detached homes | 95.9% ±3.7 pts | 66.6% | – |
| Mobile homes | 0.0% ±2.9 pts | 1.6% | – |
| Built 2020 or later | 0.0% ±2.9 pts | 0.6% | – |
| Built 2010 to 2019 | 3.5% ±5.8 pts | 4.9% | – |
| Built 1939 or earlier | 19.6% ±8.9 pts | 8.4% | – |
| Households with no vehicle | 0.0% ±3.3 pts | 4.6% | – |
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 Long Lake work and get to work?
65.5% of Long Lake's workers drive alone. The average trip to work takes 32.9 minutes. The unemployment rate in 2020-2024 averaged 17.1%.
| Measure | Long Lake | Lake County | Change since 2015-2019 |
|---|---|---|---|
| In the labor force (age 16+) | 76.8% ±5.8 pts | 68.2% | – |
| Unemployment rate | 17.1% ±8.7 pts | 5.2% | – |
| Drove alone to work | 65.5% ±11.7 pts | 65.7% | – |
| Carpooled | 23.6% ±10.3 pts | 8.5% | – |
| Public transportation | 2.5% ±3.0 pts | 2.7% | – |
| Walked | 0.0% ±2.1 pts | 2.1% | – |
| Worked from home | 8.0% ±5.9 pts | 19.5% | – |
| Mean travel time to work | 32.9 min ±5.2 | 28.5 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 Long Lake?
No census tract lies mostly in Long Lake; 5 tracts reach into it (2020 census blocks).
| Tract | Residents, 2020-2024 | Median household income |
|---|---|---|
| Tract 8613.01Lake County | 5,707 | $71,806 |
| Tract 8609.05Lake County | 5,316 | $92,420 |
| Tract 8609.06Lake County | 11,060 | $138,844 |
| Tract 8613.03Lake County | 5,081 | $66,595 |
| Tract 8610.10Lake County | 5,628 | $120,746 |
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 Long Lake) · Census block assignment files
How does Long Lake compare with other places in Illinois?
Long Lake ranks 286th of 1,380 places in Illinois with 1,000 or more residents and a reliable estimate, by median household income.
| Measure | Rank | Of |
|---|---|---|
| Population (ACS 2020-2024) | 726th | 1,383 |
| Residents per square mile | 156th | 1,383 |
| Median household income | 286th | 1,380 |
| Per capita income | 789th | 1,383 |
| Median home value | 498th | 1,379 |
| Median gross rent | 190th | 1,280 |
| Bachelor's degree or higher | 1,030th | 1,369 |
| Median age | 1,295th | 1,383 |
| Owner-occupied share | 467th | 1,382 |
| Travel time to work | 126th | 1,382 |
Long Lake's figures with every place in Illinois (CSV)
Every place in Illinois, sortable · Compare Long Lake 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 Long Lake?
22 of the 57 figures for Long Lake 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 Long Lake 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.