Town Hall Address 115 West Buckeye Ave. Ada, OH 45810 United States- Hardin County Website https://www.adaoh.org/ Zoning 419-634-4045 115 West Buckeye Ave. Ada, OH 45810 United States Fire District 419-634-8070 525 N Main St. Ada, OH 45810 United States Town Clerk 419-634-4045 115 West Buckeye Ave. Ada, OH 45810 United States Water 419-634-4045 115 West Buckeye Ave. Ada, OH 45810 United States Sewer 419-634-4045 115 West Buckeye Ave. Ada, OH 45810 United States Tax Collector 419-634-4045 115 West Buckeye Ave. Ada, OH 45810 United States Code Enforcement 419-634-4045 115 West Buckeye Ave. Ada, 45810 United States County Hardin