Cities, Towns and Villages in McHenry County, Illinois

Here is a list of all the cities, towns, and villages in McHenry County, Illinois

McHenry County is a county located in the U.S. state of Illinois. According to the 2020 Census, it had a population of 310,229, making it the sixth-most populous county in Illinois.

Its county seat is Woodstock.

Here is a list of all the cities, towns, and villages in McHenry County, Illinois:


  1. Crystal Lake
  2. Harvard
  3. Marengo
  4. McHenry
  5. Woodstock


  1. Alden
  2. Algonquin
  3. Burton
  4. Chemung
  5. Coral
  6. Dorr
  7. Dunham
  8. Grafton
  9. Greenwood
  10. Hartland
  11. Hebron
  12. Marengo
  13. McHenry
  14. Nunda
  15. Richmond
  16. Riley
  17. Seneca


  1. Algonquin
  2. Barrington Hills
  3. Bull Valley
  4. Cary
  5. Fox Lake (part)
  6. Fox River Grove
  7. Greenwood
  8. Hebron
  9. Holiday Hills
  10. Huntley
  11. Island Lake
  12. Johnsburg
  13. Lake in the Hills
  14. Lakemoor
  15. Lakewood
  16. McCullom Lake
  17. Oakwood Hills
  18. Port Barrington
  19. Prairie Grove
  20. Richmond
  21. Ringwood
  22. Spring Grove
  23. Trout Valley
  24. Union
  25. Wonder Lake

Unincorporated communities

  1. Belden
  2. Palm Beach
  3. Silver Lake
  4. Terra Cotta

Census-designated places

  1. Alden
  2. Big Foot Prairie
  3. Burtons Bridge
  4. Chemung
  5. Coral
  6. Franklinville
  7. Harmony
  8. Hartland
  9. Lawrence
  10. Pistakee Highlands
  11. Ridgefield
  12. Riley
  13. Solon Mills

Quick Facts about McHenry County, Illinois

Here are quick facts about McHenry County, Illinois:

  • Official Website:
  • County Seat: Woodstock
  • Founded: 1836
  • Area: Approximately 604 square miles
  • Population: Around 307,000
  • Geography: Located in northeastern Illinois.
  • Economy: Diverse economy with contributions from manufacturing, agriculture, and services.
  • Notable City: Crystal Lake is one of the larger cities in the county.
  • Education: Home to several school districts and McHenry County College.
  • Recreation: Offers parks, lakes, and outdoor activities. Chain O’Lakes State Park is a notable recreational area.
  • Notable Landmarks: Woodstock Square, Volo Auto Museum, and McHenry County Historical Society & Museum contribute to the county’s character.

How many cities are in McHenry County Illinois?

  • Composed of 30 cities and villages covering 611 square miles, McHenry County offers near-endless opportunities for exploration.

What is McHenry Illinois known for?

  • A boat-building industry flourished; marine recreation still remains important. For decades, McHenry took very seriously its title as the “Gateway to the Chain-of-Lakes” and this is still evidenced today in the city’s motto “Heart of the Fox River.”

Is McHenry a suburb of Chicago?

  • McHenry is a suburb of Chicago with a population of 27,237. McHenry is in McHenry County. Living in McHenry offers residents a sparse suburban feel and most residents own their homes.