Washington County Chamber of Commerce Search | Advanced Search | New Members | Coupons and Discounts | All Categories Business & Professional Services >> Chamber of Commerce Washington County Chamber of Commerce 375 Southpointe Blvd., Suite 240Canonsburg, PA 15317 724-225-3010 | fax: 724-228-7337 Visit Site Member Since: 2013 Send a message to: Washington County Chamber of Commerce Your Name: Your Email: Subject: Message: (Date: 4/28/2025) If your business isn't here, contact us today to get listed!