McHenry Flag

McHenry

County:
Lake County
County Seat:
No
Area (mi²):
15.038
State:
Illinois

McHenry is a city located in Lake County, Illinois. McHenry has a 2026 population of 28,825. McHenry is currently growing at a rate of 1.85% annually and its population has increased by 5.4% since the most recent census, which recorded a population of 27,349 in 2020.

28.8K
Total Population
1,917
Density (mi²)
523 1.85%
Growth

Nearby Cities

Sources

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