Map for Impact Sign Co. Map for Impact Sign Co. Search | Advanced Search | New Members | Coupons and Discounts | All Categories Shopping & Specialty Retail >> SIGNS, PROMOTIONAL MATERIALS & NAME BADGES Impact Sign Co. 5664 NE Clara LaneHillsboro, OR 97124 | directions (503) 439-8347 | fax: (503) 439-8348 Visit Site If your business isn't here, contact us today to get listed!