New Lenox Population

1950–2026

29,202

2026 projection

7.3% since 2020 (increase)

05K10K15K20K25K30K19501960197019801990200020102020

Source: U.S. Census Bureau decennial counts and annual estimates, including 2010–2020 intercensal estimates. 2026 is a projection. Values between recorded years are interpolated.

Use the left and right arrow keys to inspect population observations.

Population by year

Population estimates for New Lenox. Annual change is shown as a percentage. Growth is the total change since the preceding observation.
202629,202+3091.07%
202528,893+3981.40%
202428,495+3361.19%
202328,159+5141.86%
202227,645+1170.43%
202127,528+3141.15%
202027,214+1500.55%
201927,064+2070.77%
201826,857+2841.07%
201726,573+3821.46%

Showing 10 of 23 years.

The 2020 row compares the April 1 Census count with the July 1, 2019 estimate (about nine months). Its Growth and Annual change therefore do not represent a full year.

Growth since 2020, compared

New Lenox is growing faster than Will County, Illinois, and the U.S.

  • New Lenox+6.0%
  • United States+3.1%
  • Will County+2.2%
  • Illinois−0.6%

Change from July 1, 2020 to July 1, 2025 population estimates—not annualized growth or site projections.

Source: U.S. Census Bureau. U.S. totals are summed from the 50 states and D.C.; unavailable comparisons are omitted.

New Lenox Demographics

36.8median age

Median age

Female38.6 yrs
Male35.3 yrs

Adults

19,607
3,244 seniors (65+) · 17% of adults16,363 other adults

Sex

Female 48.7% · 13,631Male 51.3% · 14,375

Population by age

MaleFemale85+ years, male: 11285+ years, female: 18280–84 years, male: 12880–84 years, female: 23575–79 years, male: 26475–79 years, female: 24070–74 years, male: 35470–74 years, female: 60665–69 years, male: 52965–69 years, female: 59460–64 years, male: 85760–64 years, female: 82455–59 years, male: 80255–59 years, female: 93150–54 years, male: 85550–54 years, female: 79845–49 years, male: 86445–49 years, female: 83640–44 years, male: 1,35640–44 years, female: 1,13035–39 years, male: 1,14335–39 years, female: 1,17630–34 years, male: 64430–34 years, female: 81425–29 years, male: 72625–29 years, female: 51820–24 years, male: 85820–24 years, female: 67715–19 years, male: 91115–19 years, female: 94110–14 years, male: 1,28810–14 years, female: 1,2635–9 years, male: 1,5165–9 years, female: 8310–4 years, male: 1,1680–4 years, female: 1,03585+80–8475–7970–7465–6960–6455–5950–5445–4940–4435–3930–3425–2920–2415–1910–145–90–45005001K1K

Hover or tap an age group to see exact counts. Use the up and down arrow keys to inspect age groups.

U.S. Census Bureau, 2024 ACS 5-year estimates · Table S0101

Race and ethnicity

Tap a square or a group below to highlight it.

Each square is about 1% of residents (roughly 280 people).

Hispanic or Latino residents can be of any race. All other groups exclude Hispanic residents.

U.S. Census Bureau, 2024 ACS 5-year estimates · Table B03002

New Lenox Income

$140,865median household income

Median household income

$140,865

Half of households earn more, half earn less

Median earnings

$77,910

Typical yearly pay for a worker 25 or older.

Poverty rate

1.5%

About 1 in 66 residents

U.S. Census Bureau, 2024 ACS 5-year estimates · Tables S1901, S1501, S1701

New Lenox Marital Status

64% of residents age 15 and older are married.

MarriedNever married
Overall
Male
Female
Marital status of residents age 15 and older
StatusOverallMaleFemale
Married64%65%63%
Never married26%28%23%
Divorced6%5%7%
Widowed5%2%7%
Separated<1%<1%<1%

U.S. Census Bureau, 2024 ACS 5-year estimates · Table S1201

Sources

14 sources

Population

American Community Survey, 2024 5-year

Additional sources