A Party City location in Santa Clarita Valley’s Canyon Country will close this summer after a three-year run. There is no official date for the shuttering, but the store at 19037 Golden Valley Road has begun liquidating its merchandise and plans to close in the next few months. According to a note on Party City’s website, the company’s growth this year has been slowed by a helium shortage. “Due to an unforeseen disruption in supply and increasing demand, a small group of our stores are being impacted by the global helium shortage. This may affect fulfillment of balloon orders,” the note said. Additionally, a February financial report from the company indicated that increased freight and distribution costs contributed to its stymied growth. Santa Clarita’s other Party City location, at 27029 McBean Parkway, will remain open. It will be Party City’s sole franchise in the region.