Village · Illinois
Green Oaks, Illinois
Green Oaks, village, in Lake County, Illinois. Green Oaks had 4,082 residents on July 1, 2025 by the Census Bureau's estimate, down 0.9% since 2020; the 2020 Census counted 4,128 and the ACS 2020-2024 5-year estimates put it at 4,096 (±28). GEOID 1731446.
Residents, July 2025 estimate
4,082
Census Bureau estimate (no margin published)
2020 Census count: 4,128 · ACS 2020-2024: 4,096 ±28
Median household income
$147,614
±$53,511 (90% margin)
Illinois: $83,390
Median home value
$673,100
±$31,296 (90% margin)
Illinois: $263,300
Median gross rent
$1,356
±$1,316 (90% margin)
Illinois: $1,274
Where is Green Oaks and what county is it in?
Green Oaks is a village in Lake County, Illinois. It covers 4.0 square miles of land, 1,034 residents per square mile in 2020.
Green Oaks is in the Chicago-Naperville-Elgin, IL-IN metropolitan statistical area, which takes in 13 counties (Census Bureau delineation, July 2023).
Green Oaks lies mostly within Libertyville Township and reaches into Shields 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 Green Oaks, and is it growing?
The Census Bureau estimates that 4,082 people lived in Green Oaks on July 1, 2025, down 0.9% since 2020, in line with Illinois (−0.8%). The 2020 Census counted 4,128 residents. The 2020-2024 American Community Survey, a five-year sample, puts the population at 4,096 (±28).
| Measure | Green Oaks | Lake County | Change since 2015-2019 |
|---|---|---|---|
| Total population | 4,096 ±28 | 714,223 | +250 |
| Households | 1,552 ±205 | 258,455 | +336 |
| Average household size | 2.56 ±0.32 | 2.69 | −0.47 |
| Housing units | 1,589 ±205 | 270,618 | +327 |
Green Oaks's population since 2000
From 3,572 in 2000 to 4,082 in 2025: up 14.3%. The 2000, 2010 and 2020 figures are census counts, each for Green Oaks as it was drawn that year: a place that annexed land, or a community that has since incorporated, covered a different area then. The 2005 figure is the Census Bureau's intercensal estimate, revised to fit the 2000 and 2010 counts and drawn on 2010 boundaries; 2015 and 2025 are July 1 estimates made from the census before them.
Source: The 2000, 2010 and 2020 Census counts and the Census Bureau's population estimates (intercensal 2000-2010, Vintage 2020, Vintage 2025) · Census population estimates
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 Green Oaks?
The median resident of Green Oaks is 46.2 years old; 22.7% are under 18 and 25.7% are 65 or older. The largest group is non-Hispanic white residents at 74.1%, then Hispanic or Latino residents (of any race) at 10.7%. 13.0% of residents were born outside the United States.
| Measure | Green Oaks | Lake County | Change since 2015-2019 |
|---|---|---|---|
| Median age | 46.2 ±5.1 | 39.1 | no clear change |
| Under 18 years | 22.7% ±2.9 pts | 23.3% | – |
| 65 years and over | 25.7% ±6.2 pts | 15.8% | – |
| Male | 52.0% ±3.9 pts | 50.3% | – |
| Hispanic or Latino (any race) | 10.7% ±6.5 pts | 24.9% | – |
| White alone, not Hispanic | 74.1% ±6.4 pts | 56.2% | −8.5 pts |
| Black or African American alone, not Hispanic | 1.4% ±1.1 pts | 6.3% | – |
| Asian alone, not Hispanic | 9.4% ±3.8 pts | 8.6% | no clear change |
| American Indian and Alaska Native alone, not Hispanic | 0.0% ±0.9 pts | 0.1% | – |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.0% ±0.9 pts | 0.0% | – |
| Two or more races, not Hispanic | 4.0% ±2.1 pts | 3.3% | – |
| Some other race alone, not Hispanic | 0.4% ±0.6 pts | 0.6% | – |
| Born outside the United States | 13.0% ±3.6 pts | 19.8% | no clear change |
| Speak a language other than English at home (age 5+) | 20.5% ±6.7 pts | 31.4% | – |
| Civilian veterans (age 18+) | 4.0% ±1.9 pts | 4.7% | – |
| With a disability | 12.6% ±4.5 pts | 9.8% | – |
| No health insurance coverage | 1.3% ±1.2 pts | 6.9% | – |
| High school graduate or higher (age 25+) | 91.3% ±7.5 pts | 90.6% | – |
| Bachelor's degree or higher (age 25+) | 60.9% ±7.3 pts | 47.7% | no clear change |
| Graduate or professional degree (age 25+) | 26.8% ±4.5 pts | 20.1% | – |
| Lived in the same house a year earlier | 85.4% ±5.6 pts | 88.4% | – |
| Moved from another state in the past year | 1.6% ±2.0 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 Green Oaks earn?
Half of Green Oaks's 1,552 households earn less than $147,614 a year (±$53,511), against $110,416 in Lake County and $83,390 in Illinois. In 2015-2019 it was $203,834 in 2024 dollars; the margins of error cannot tell the two periods apart. 6.1% of residents live below the poverty line.
| Measure | Green Oaks | Lake County | Change since 2015-2019 |
|---|---|---|---|
| Median household income | $147,614 ±$53,511 | $110,416 | no clear change |
| Mean household income | $211,627 ±$33,126 | $155,726 | – |
| Per capita income | $82,452 ±$9,873 | $57,153 | no clear change |
| People below the poverty line | 6.1% ±3.1 pts | 8.3% | no clear change |
| Children under 18 below the poverty line | 0.0% ±4.0 pts | 11.5% | – |
| Households receiving SNAP | 0.0% ±2.4 pts | 9.4% | – |
| Households with a computer | 94.3% ±3.0 pts | 97.2% | – |
| Households with a broadband subscription | 93.3% ±3.4 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 Green Oaks?
Owners occupy 71.7% of Green Oaks's occupied homes and renters 28.3%. The median owner-occupied home is valued at $673,100 by its owner (±$31,296).
| Measure | Green Oaks | Lake County | Change since 2015-2019 |
|---|---|---|---|
| Median home value (owner-occupied) | $673,100 ±$31,296 | $345,700 | no clear change |
| Median gross rent | $1,356 ±$1,316 | $1,477 | – |
| Renters paying 35% or more of income on rent | 47.8% ±32.0 pts | 40.1% | – |
| Median monthly owner costs, with a mortgage | $3,887 ±$300 | $2,503 | – |
| Owner-occupied homes | 71.7% ±12.6 pts | 74.8% | −20.1 pts |
| Renter-occupied homes | 28.3% ±12.6 pts | 25.2% | – |
| Housing units | 1,589 ±205 | 270,618 | +327 |
| Homeowner vacancy rate | 0.0% ±3.3 pts | 0.9% | – |
| Rental vacancy rate | 7.8% ±9.4 pts | 3.7% | – |
| Single-family detached homes | 70.1% ±12.2 pts | 66.6% | – |
| Mobile homes | 0.0% ±2.3 pts | 1.6% | – |
| Built 2020 or later | 0.0% ±2.3 pts | 0.6% | – |
| Built 2010 to 2019 | 17.8% ±7.2 pts | 4.9% | – |
| Built 1939 or earlier | 12.5% ±13.0 pts | 8.4% | – |
| Households with no vehicle | 11.1% ±6.4 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 many new homes is Green Oaks building?
Builders took permits for 1 new housing units in Green Oaks in 2025 (1 in single-family houses), 0.2 per 1,000 residents against 1.5 across Illinois.
Counts of units in permits a local office issued; not every permitted unit is built. A year marked with months was reported for part of the year.
Source: Building Permits Survey, annual place files 2019-2025, U.S. Census Bureau · Census Building Permits Survey
How do people in Green Oaks work and get to work?
62.4% of Green Oaks's workers drive alone and 27.6% work from home. The average trip to work takes 30.9 minutes. The unemployment rate in 2020-2024 averaged 6.3%.
| Measure | Green Oaks | Lake County | Change since 2015-2019 |
|---|---|---|---|
| In the labor force (age 16+) | 55.3% ±7.4 pts | 68.2% | – |
| Unemployment rate | 6.3% ±3.6 pts | 5.2% | no clear change |
| Drove alone to work | 62.4% ±8.0 pts | 65.7% | – |
| Carpooled | 5.2% ±4.4 pts | 8.5% | – |
| Public transportation | 4.8% ±3.7 pts | 2.7% | – |
| Walked | 0.0% ±2.2 pts | 2.1% | – |
| Worked from home | 27.6% ±7.6 pts | 19.5% | +17.5 pts |
| Mean travel time to work | 30.9 min ±5.8 | 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 Green Oaks?
1 census tract lies mostly in Green Oaks, and 5 more reach into it (2020 census blocks).
| Tract | Residents, 2020-2024 | Median household income |
|---|---|---|
| Tract 8637.02Lake County | 4,127 | $93,542 |
| Tract 8636.01Lake County | 3,355 | $207,463 |
| Tract 8662Lake County | 6,545 | $177,500 |
| Tract 8637.01Lake County | 4,614 | $168,100 |
| Tract 8632.02Lake County | 5,543 | $163,190 |
| Tract 8638.01Lake County | 4,910 | $161,832 |
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 Green Oaks) · Census block assignment files
How does Green Oaks compare with other places in Illinois?
By the Census Bureau's July 2025 estimates, Green Oaks is the 5,458th-most populous of the 19,476 U.S. incorporated places that have one and the 367th-most populous of 1,294 in Illinois.
Green Oaks ranks 63rd of 1,380 places in Illinois with 1,000 or more residents and a reliable estimate, by median household income.
| Measure | Rank | Of |
|---|---|---|
| Population, July 2025 estimate | 367th | 1,294 |
| Growth 2020-2025 (PEP) | 419th | 1,347 |
| Residents per square mile | 612th | 1,383 |
| Median household income | 63rd | 1,380 |
| Per capita income | 34th | 1,383 |
| Median home value | 25th | 1,379 |
| Poverty rate | 876th | 1,119 |
| Bachelor's degree or higher | 73rd | 1,369 |
| Median age | 224th | 1,383 |
| Owner-occupied share | 969th | 1,382 |
| Work from home | 46th | 1,015 |
| Travel time to work | 221st | 1,382 |
Green Oaks's figures with every place in Illinois (CSV)
Every place in Illinois, sortable · Compare Green Oaks 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 Green Oaks?
18 of the 57 figures for Green Oaks 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 Green Oaks 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' public schools in Green Oaks.