Town Hall Address 160 N. Main St. Eldorado, OH 45321 United States- Preble County Zoning (937) 273-5120 160 N. Main St. Eldorado, OH 45321 United States Fire District (937) 273-3141 140 E Mill St Eldorado, OH 45321 United States Town Clerk (937) 273-5120 160 N. Main St. Eldorado, OH 45321 United States Water (937) 273-5120 160 N. Main St. Eldorado, OH 45321 United States Sewer (937) 273-5120 160 N. Main St. Eldorado, OH 45321 United States Tax Collector (937) 273-5120 160 N. Main St. Eldorado, OH 45321 United States Code Enforcement (937) 273-5120 160 N. Main St. Eldorado, 45321 United States County Preble