There are 231 Pollution Control Companies in Ohio, serving a population of 11,609,756 people in an area of 40,851 square miles. There is 1 Pollution Control Company per 50,258 people, and 1 Pollution Control Company per 176 square miles.
The state of Ohio is ranked 41st in Pollution Control Companies per capita, and 15th in Pollution Control Companies per square mile.