Will County Population

1840–2026

715.53K

2026 projection

2.7% since 2020 (increase)

0200K400K600K800K1840186018801900192019401960198020002020

Source: U.S. Census Bureau decennial counts and annual 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 Will County. Annual change is shown as a percentage. Growth is the total change since the preceding observation.
2026715,526+3,2730.46%
2025712,253+3,2730.46%
2024708,980+5,1080.73%
2023703,872+4,7600.68%
2022699,112-8080.12%
2021699,920+3,0190.43%
2020696,901+6,7250.97%
2019690,176-7580.11%
2018690,934+5780.08%
2017690,356+2,0260.29%

Showing 10 of 33 years.

Will County Demographics

39.1median age

Median age

Female39.8 yrs
Male38.3 yrs

Adults

535,898
102,267 seniors (65+) · 19% of adults433,631 other adults

Sex

Female 50.1% · 351,509Male 49.9% · 349,953

Population by age

MaleFemale85+ years, male: 3,55085+ years, female: 6,70480–84 years, male: 5,22980–84 years, female: 6,63975–79 years, male: 7,85375–79 years, female: 9,95070–74 years, male: 13,09570–74 years, female: 14,55665–69 years, male: 16,72065–69 years, female: 17,97160–64 years, male: 22,17160–64 years, female: 21,94255–59 years, male: 23,57155–59 years, female: 23,50350–54 years, male: 25,44650–54 years, female: 25,25245–49 years, male: 24,21745–49 years, female: 24,17040–44 years, male: 25,61040–44 years, female: 23,92635–39 years, male: 22,22635–39 years, female: 23,55930–34 years, male: 21,70830–34 years, female: 21,44525–29 years, male: 21,14325–29 years, female: 20,28520–24 years, male: 23,27420–24 years, female: 21,64815–19 years, male: 26,61215–19 years, female: 24,95010–14 years, male: 25,62910–14 years, female: 25,3475–9 years, male: 22,4595–9 years, female: 21,0290–4 years, male: 19,4400–4 years, female: 18,63385+80–8475–7970–7465–6960–6455–5950–5445–4940–4435–3930–3425–2920–2415–1910–145–90–410K10K20K20K

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 7,015 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

Will County Income

$109,984median household income

Median household income

$109,984

Half of households earn more, half earn less

Median earnings

$61,606

Typical yearly pay for a worker 25 or older.

Poverty rate

7.3%

About 1 in 14 residents

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

Will County Marital Status

53% of residents age 15 and older are married.

MarriedNever married
Overall
Male
Female
Marital status of residents age 15 and older
StatusOverallMaleFemale
Married53%54%52%
Never married32%35%30%
Divorced8%7%9%
Widowed5%2%8%
Separated1%1%1%

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

Sources

8 sources, all from the U.S. Census Bureau

Population

American Community Survey, 2024 5-year