Where is party city holdco inc prty based? It offers its products through company-owned stores, independent party supply stores, mass merchants, grocery retailers, e-commerce merchandisers, and dollar stores. The company was founded in 1947 and is headquartered in Elmsford, New York. More... What is the Market's View on Party City Holdco Inc (PRTY) Stock's Price and Volume Trends Thursday?Where are party city stores located? Party City. Based in Elmsford, New York, the company is the largest retailer of party goods in the United States, Canada and Mexico, operating over 900 company-owned and franchise outlets under the Party City, Halloween City, Toy City, and Factory Card & Party Outlet brands.How do i contact party city customer service? (800) PARTY CITY or (800) 727-8924 or use our Live Chat feature: Monday through Friday 7:00am - 7:00pm CST Saturday & Sunday 11:00am - 3:00pm CSTWho is the new ceo of party city? Brad Weston became our President & Chief Executive Officer effective April 1, 2020 and has been a member of our Board since April 2020. Mr. Weston joined the Company as President of the Company and Chief Executive Officer of Party City Retail Group, in July 2019.