May 14, 2008 > Civil marriage ceremony at Union City's City Hall Civil marriage ceremony at Union City's City Hall "Tie the knot" at City Hall. Call to make an appointment and we'll provide an official deputy marriage counselor to perform your civil marriage ceremony. You must bring a marriage license issued by Alameda County, picture IDs, and a check or money order for $50 made payable to the City of Union City. For more information please call (510) 675-5486 or (510) 675-5265. City Hall of Union City 34009 Alvarado-Niles Rd., Union City (510) 675-5265