United Way of Union County Share: Community Service OrganizationsAssociations & OrganizationsCharitable OrganizationNon-Profit Organizations United Way of Union County Visit Website PO Box 262 Marysville, OH 43040 (937) 644-8381 (877) 644-8381 www.unitedwayofunioncounty.org Facebook Hours: 8:00 am to 4:00 pm Monday through Friday About About The mission of United way of Union County is bringing neighbors and resources together to improve lives.