Welcome to the Algonquin Township

Thank you for visiting our presence on the World Wide Web. We encourage you to bookmark this website, and browse its easy to read and informative pages.


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

AARP Drivers Safety Class

AARP Drivers Safety Class offered May 17th and 18th from 9:00 am to 1:00 pm. Must attend both sessions. Call [...]

Early Voting For the February 28th, 2017 election

Early voting will take place February 13-27 (M-F) 9-4 & February 18 & 25 (Sat) 9-Noon in Building 6B, Community [...]

AARP-Tax Aide

Free tax preparation will be offered to seniors by appointment only. Call the Supervisors office to Schedule 847-639-2700 x7 starting [...]

Upcoming Events

Overeaters Anonymous Mtg.

Overeaters Anonymous Mtg.

February 26 @ 6:00 pm - 7:00 pm
|Recurring Event (See all)

An event every day that begins at 6:00pm, repeating indefinitely

C-G Youth LaCrosse Club

C-G Youth LaCrosse Club

February 26 @ 6:30 pm - 9:30 pm

Bridge Club

Bridge Club

February 27 @ 9:30 am - 3:00 pm