Party City 227 Skokie Valley Rd, Highland Park, IL60035 Party City is America's largest party and Halloween specialty retailer. Party City provides supplies for birthday, theme…More and holiday parties, and other special occasions. The store also sells costumes and accessories, party favors and solid-color tableware. Party City has more than 600 stores through the United States and Puerto Rico. This store is located on Skokie Valley Road in the Crossroads Shopping Center.