Union County Senior Services Share: Senior ServicesHome AssistanceHuman ServicesNon-Profit OrganizationsSocial Service Union County Senior Services Visit Website 940 London Ave Suite 1800 Marysville, OH 43040 (937) 644-1010 Option 5 (937) 644-8700 (fax) https://www.unioncountyohio.gov/senior-services-home Hours: Monday thru Friday 8:00 am to 4:30 pm. Closed the third Friday of every month at 12:00 pm. About Map About Senior Services assists seniors in Union County to live safely and independently in the community. Senior Services is funded by Union County Sales Tax Levy. What's Nearby? Distance: 5 10 15 20 25 50 mi.