Town Hall Address 10 E. Locust St. Union, MO 63084 United States- Franklin County Website https://www.unionmissouri.gov Town Clerk 636-583-3600 Ext. 1104 10 E. Locust St. Union, MO 63084 United States Tax Collector 636-583-3600 10 E. Locust St. Union, MO 63084 United States County Franklin