- Keith Nygren, Sheriff 2200 N. Seminary Ave. Woodstock, IL 60098 (815) 338-2144 FAX (815) 338-9285 email: Sheriff@co.mchenry.il.us Sheriff Undersheriff EEO Office General Support Patrol Detective Narcotic/Gang Corrections State Police Sex Offender File Civil Processing Fees Radio Recording Fees Records Fees Internship Program Solicitation Policy Radar Trailers Employment MISSION STATEMENT The ...www.co.mchenry.il.us/CountyDpt/sheriff