Suhr is a municipality in the district of Aarau of the canton of Aargau in Switzerland. Suhr has an area, as of 2006, of 10.6 km². Of this area, …Suhr is a municipality in the district of Aarau of the canton of Aargau in Switzerland. Suhr has an area, as of 2006, of 10.6 km². Of this area, 29.9% is used for agricultural purposes, while 44.4% is forested. Of the rest of the land, 25.2% is settled and the remainder is non-productive.