Through a network of 289 locations across the United States and Canada, our 8,700 employees serve approximately 145,000 customers. Our business is primarily based in the United States ("U.S."). We also have subsidiary operations with distribution facilities in Canada and Puerto Rico.
PAGE 3, https://www.graybar.com/content-resource/blob/1025558/4657a7411255a365a7f4989cda72f69c/2018-12-31-pdf-data.pdf