McHenry County Economic Development Corp. Back to Search McHenry County Economic Development Corp. Categories Government Offices 8900 Northwest Hwy 14 Suite A229 , Crystal Lake , IL , 60012 United States (815) 893-0895 (815) 893-6542 Send Email www.mchenrycountyedc.com Contacts Primary Mark Piekos Executive Director Share × Print Email Facebook LinkedIn X Pinterest Powered By GrowthZone