There are 197 Pollution Control Companies in Harris County, Texas, serving a population of 4,525,519 people in an area of 1,705 square miles. There is 1 Pollution Control Company per 22,972 people, and 1 Pollution Control Company per 8 square miles.
In Texas, Harris County is ranked 45th of 254 counties in Pollution Control Companies per capita, and 1st of 254 counties in Pollution Control Companies per square mile.