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 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.