Will County Flag

Will County

State:
Illinois
County Seat:
Joliet

Will County's estimated 2025 population is 713,783 with a growth rate of 0.73% in the past year according to the most recent United States census data. Will County is the 4th largest county in Illinois. The 2010 population was 678,829 and has seen a growth of 5.15% since that time.

713,783
Total Population
854
Population Density (mi²)
4
Population Rank (State)
5.2K 0.73%
Annual Population Growth

Will County Population

Demographics

Economics and Income Statistics

Sources

  1. City and Town Population Totals: 2020-2024
  2. US Census State Population Estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  3. US Census County Population Estimates - Most recent county estimates from the Census Bureau's Population Estimates Program
  4. American Community Survey (2009 - 2013)
  5. Census QuickFacts
  6. Historical Populations of States and Counties (1790 - 1990)