Town Hall Address 50 S Emerson St Mount Prospect, IL 60056 United States- Cook County Website https://www.mountprospect.org/ Zoning 847-392-6000 50 S Emerson St Mount Prospect, IL 60056 United States Fire District 847-870-5660 111 E Rand Rd Mount Prospect, IL 60056 United States Town Clerk 847-818-5333 50 S Emerson St Mount Prospect, IL 60056 United States Tax Collector (312) 443-7550 118 North Clark Street Chicago, IL 60602 United States County Cook