Party City 5522 Leesburg Pike, Falls Church, VA22041 Party City is located off Leesburg Pike in Bailey's Crossroads. Party City services the Falls Church community…More with a wide selection of everything needed to make a great party even greater. Party City has something for every party and every theme, from children's parties featuring Spongebob or a Disney Princess. It also has some great options for those looking to save a little when planning their wedding. Shop for balloons, invitations, and during Halloween, one of the largest costume inventories.