Offices: 8910 S. Route 23
Township Hall: 9312 Riley Road
Marengo, Illinois 60152

Dedicated To Serving The Citizens Of Riley Township.

Riley Township is a township located south of Marengo, Illinois. The Riley Town Hall, built in 1868, is the oldest Town Hall in McHenry County. It has been in use ever since its construction, and still today houses monthly township meetings, as well as other local organized meetings and events.

Riley Township meets monthly in the Riley Town Hall, on the second Tuesday of every month at 7PM. All residents of Riley Township are welcome to attend.

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COVID-19 Statement

Riley Township is an essential service that will continue to operate during the Coronavirus Pandemic. If you need to contact the Road District, please call 815-568-6221. If you need to speak to the Assessor she can be reached at 815-568-8326 or by email at

If you have any other question or concerns or are in need of general assistance you may contact the Supervisor at 815-568-7001 or by email at

Please contact us if you have any questions or need assistance.