Township · Illinois
New Lenox Township, Illinois
New Lenox Township, township, in Will County, Illinois. New Lenox Township had 45,290 residents on July 1, 2025 by the Census Bureau's estimate, up 3.6% since 2020; the 2020 Census counted 43,709 and the ACS 2020-2024 5-year estimates put it at 44,199 (±42). GEOID 1719752597.
Residents, July 2025 estimate
45,290
Census Bureau estimate (no margin published)
2020 Census count: 43,709 · ACS 2020-2024: 44,199 ±42
Median household income
$133,434
±$6,497 (90% margin)
Illinois: $83,390
Median home value
$388,100
±$9,437 (90% margin)
Illinois: $263,300
Median gross rent
$1,429
±$169 (90% margin)
Illinois: $1,274
Where is New Lenox Township and what county is it in?
New Lenox Township is a township in Will County, Illinois. It covers 35.9 square miles of land, 1,218 residents per square mile in 2020.
2 places lie inside New Lenox Township: New Lenox (village, 27,214 in 2020) and Marley (CDP, 128 in 2020). Part of Joliet (city), Homer Glen (village) and Mokena (village) also lie in it.
New Lenox Township is in the Chicago-Naperville-Elgin, IL-IN metropolitan statistical area, which takes in 13 counties (Census Bureau delineation, July 2023).
Source: 2024 Gazetteer and 2020 place-by-county files, U.S. Census Bureau · Census reference files
How many people live in New Lenox Township, and is it growing?
The Census Bureau estimates that 45,290 people lived in New Lenox Township on July 1, 2025, up 3.6% since 2020, while Illinois shrank 0.8%. The 2020 Census counted 43,709 residents. The 2020-2024 American Community Survey, a five-year sample, puts the population at 44,199 (±42).
| Measure | New Lenox Township | Will County | Change since 2015-2019 |
|---|---|---|---|
| Total population | 44,199±42 | 701,462 | +1,862 |
| Households | 14,865±403 | 244,273 | +620 |
| Average household size | 2.96±0.08 | 2.84 | no clear change |
| Housing units | 15,509±427 | 254,278 | +606 |
New Lenox Township's population since 2000
From 29,730 in 2000 to 45,290 in 2025: up 52.3%. The 2000, 2010 and 2020 figures are census counts, each for New Lenox Township 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 New Lenox Township?
The median resident of New Lenox Township is 38.9 years old; 27.7% are under 18 and 14.4% are 65 or older. The largest group is non-Hispanic white residents at 86.1%, then Hispanic or Latino residents (of any race) at 8.0%. 3.4% of residents were born outside the United States.
| Measure | New Lenox Township | Will County | Change since 2015-2019 |
|---|---|---|---|
| Median age | 38.9±0.9 | 39.1 | no clear change |
| Under 18 years | 27.7%±1.3 pts | 23.6% | – |
| 65 years and over | 14.4%±1.0 pts | 14.6% | – |
| Male | 50.1%±1.4 pts | 49.9% | – |
| Hispanic or Latino (any race) | 8.0%±2.1 pts | 19.8% | no clear change |
| White alone, not Hispanic | 86.1%±2.7 pts | 58.6% | −4.0 pts |
| Black or African American alone, not Hispanic | 1.1%±0.6 pts | 11.6% | no clear change |
| Asian alone, not Hispanic | 1.3%±0.9 pts | 6.3% | – |
| American Indian and Alaska Native alone, not Hispanic | 0.0%±0.1 pts | 0.1% | – |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.0%±0.1 pts | 0.0% | – |
| Two or more races, not Hispanic | 3.3%±1.0 pts | 3.4% | – |
| Some other race alone, not Hispanic | 0.2%±0.1 pts | 0.4% | – |
| Born outside the United States | 3.4%±1.4 pts | 13.5% | no clear change |
| Speak a language other than English at home (age 5+) | 5.0%±1.5 pts | 22.4% | – |
| Civilian veterans (age 18+) | 4.6%±0.8 pts | 4.8% | – |
| With a disability | 7.2%±0.8 pts | 10.0% | – |
| No health insurance coverage | 2.5%±1.1 pts | 5.2% | no clear change |
| High school graduate or higher (age 25+) | 97.2%±0.9 pts | 91.8% | – |
| Bachelor's degree or higher (age 25+) | 43.6%±2.5 pts | 37.5% | no clear change |
| Graduate or professional degree (age 25+) | 18.0%±1.9 pts | 14.9% | – |
| Lived in the same house a year earlier | 95.1%±0.9 pts | 92.1% | – |
| Moved from another state in the past year | 0.9%±0.6 pts | 0.8% | – |
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 New Lenox Township earn?
Half of New Lenox Township's 14,865 households earn less than $133,434 a year (±$6,497), against $109,984 in Will County and $83,390 in Illinois. In 2015-2019 it was $133,250 in 2024 dollars; the margins of error cannot tell the two periods apart. 3.9% of residents live below the poverty line.
| Measure | New Lenox Township | Will County | Change since 2015-2019 |
|---|---|---|---|
| Median household income | $133,434±$6,497 | $109,984 | no clear change |
| Mean household income | $147,849±$4,487 | $134,181 | – |
| Per capita income | $50,496±$1,625 | $47,516 | −$3,998 |
| People below the poverty line | 3.9%±1.8 pts | 7.3% | no clear change |
| Children under 18 below the poverty line | 4.0%±3.2 pts | 9.9% | – |
| Households receiving SNAP | 3.2%±1.2 pts | 10.1% | – |
| Households with a computer | 98.8%±0.5 pts | 97.0% | – |
| Households with a broadband subscription | 95.9%±1.3 pts | 94.1% | – |
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 New Lenox Township?
Owners occupy 93.5% of New Lenox Township's occupied homes and renters 6.5%. The median owner-occupied home is valued at $388,100 by its owner (±$9,437). The median renter pays $1,429 a month including utilities, and 29.0% of renters pay 35% or more of their income on rent.
| Measure | New Lenox Township | Will County | Change since 2015-2019 |
|---|---|---|---|
| Median home value (owner-occupied) | $388,100±$9,437 | $319,600 | +$29,845 |
| Median gross rent | $1,429±$169 | $1,462 | no clear change |
| Renters paying 35% or more of income on rent | 29.0%±13.5 pts | 43.4% | no clear change |
| Median monthly owner costs, with a mortgage | $2,599±$63 | $2,255 | – |
| Owner-occupied homes | 93.5%±1.4 pts | 82.8% | +2.2 pts |
| Renter-occupied homes | 6.5%±1.4 pts | 17.2% | – |
| Housing units | 15,509±427 | 254,278 | +606 |
| Homeowner vacancy rate | 0.7%±0.6 pts | 0.5% | – |
| Rental vacancy rate | 9.2%±10.0 pts | 3.7% | – |
| Single-family detached homes | 85.2%±1.8 pts | 74.4% | – |
| Mobile homes | 0.6%±0.7 pts | 1.3% | – |
| Built 2020 or later | 1.3%±0.6 pts | 1.2% | – |
| Built 2010 to 2019 | 12.9%±1.7 pts | 6.3% | – |
| Built 1939 or earlier | 2.2%±1.0 pts | 6.9% | – |
| Households with no vehicle | 2.7%±1.0 pts | 3.9% | – |
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 New Lenox Township work and get to work?
74.8% of New Lenox Township's workers drive alone and 13.8% work from home. The average trip to work takes 32.4 minutes. The unemployment rate in 2020-2024 averaged 2.7%.
| Measure | New Lenox Township | Will County | Change since 2015-2019 |
|---|---|---|---|
| In the labor force (age 16+) | 69.5%±1.9 pts | 68.3% | – |
| Unemployment rate | 2.7%±0.8 pts | 4.9% | no clear change |
| Drove alone to work | 74.8%±2.2 pts | 72.9% | – |
| Carpooled | 5.1%±1.4 pts | 8.0% | – |
| Public transportation | 3.0%±0.7 pts | 2.0% | – |
| Walked | 0.5%±0.2 pts | 0.7% | – |
| Worked from home | 13.8%±1.9 pts | 14.7% | +9.4 pts |
| Mean travel time to work | 32.4 min±1.3 | 31.4 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 New Lenox Township?
9 census tracts lie mostly in New Lenox Township (2020 census blocks). Their median household incomes run from $108,854 (Tract 8811.11) to $149,318 (Tract 8811.13).
| Tract | Residents, 2020-2024 | Median household income |
|---|---|---|
| Tract 8811.08Will County | 7,293 | $140,824 |
| Tract 8811.05Will County | 7,141 | $130,714 |
| Tract 8811.13Will County | 6,236 | $149,318 |
| Tract 8811.12Will County | 5,156 | $143,036 |
| Tract 8811.15Will County | 4,736 | $134,474 |
| Tract 8811.09Will County | 4,134 | $131,006 |
| Tract 8811.16Will County | 4,093 | $147,065 |
| Tract 8811.11Will County | 2,734 | $108,854 |
| Tract 8811.07Will County | 2,676 | $116,486 |
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 New Lenox Township) · Census block assignment files
How does New Lenox Township compare with other places in Illinois?
By the Census Bureau's July 2025 estimates, New Lenox Township is the 188th-most populous of the 16,079 U.S. towns and townships that have one and the 54th-most populous of 1,407 in Illinois.
New Lenox Township ranks 100th 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 | 54th | 1,407 |
| Growth 2020-2025 (PEP) | 74th | 1,347 |
| Residents per square mile | 542nd | 1,383 |
| Median household income | 100th | 1,380 |
| Per capita income | 256th | 1,383 |
| Median home value | 107th | 1,379 |
| Median gross rent | 239th | 1,280 |
| Poverty rate | 1,039th | 1,119 |
| Bachelor's degree or higher | 219th | 1,369 |
| Median age | 954th | 1,383 |
| Owner-occupied share | 100th | 1,382 |
| Work from home | 349th | 1,015 |
| Travel time to work | 150th | 1,382 |
New Lenox Township's figures with every place in Illinois (CSV)
Every place in Illinois, sortable · Compare New Lenox Township 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 New Lenox Township?
8 of the 57 figures for New Lenox Township 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 New Lenox Township 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.