Welcome to the Algonquin Township

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Algonquin Township is the largest township in McHenry County, with a population of 88,389 as of the 2010 Census. The Township includes the communities of Algonquin, Barrington Hills, Cary, Crystal Lake, Fox River Grove, Lake In The Hills, Village of Port Barrington, Lakewood, Oakwood Hills, and Trout Valley.

We are located at 3702 U.S. Highway 14, Crystal Lake, IL, 60014. Business hours are Monday through Friday, 8:00 am. to 4:00pm. The Assessor’s office is open until 5:00 pm.

Monthly Township meetings, which take place at the Township office, are held on the second Wednesday of each month at 7pm.  In addition, the Township conducts an Annual Town Meeting on the second Tuesday in April at 7pm.

The Algonquin Township team takes considerable pride in serving the needs of residents in our vast geographic area.  Please let us know how we can be of service to you.

Recent News

2017 McHenry County Residential Recycling Extravaganza!

Saturday, July 29th 2017 8:00 AM - 12:00 Noon; McHenry County Administration Bldg. 667 Ware Road Woodstock, IL Sponsored by: McHenry [...]

AARP Drivers Safety Class

AARP Drivers Safety Class offered May 17th and 18th from 9:00 am to 1:00 pm for drivers 50+. Must attend [...]

Document Shredding Suspended Until Further Notice

Please check back for updates. 3 boxes per household are allowed for Algonquin Township residents only.

Upcoming Events



July 24 @ 9:30 am - 3:00 pm

Basic Yoga

Basic Yoga

July 24 @ 5:30 pm - 6:30 pm
|Recurring Event (See all)

Merry Quilters

Merry Quilters

July 25 @ 9:00 am - 1:00 pm