 Potter has a warm-summer humid continental climate ("Dfb") and average monthly temperatures in Coudersport range from 22.0 °F in January to 66.4 °F in July.As of the census of 2000, there were 18,080 people, 7,005 households, and 5,001 families residing in the county.The population density was 17 people per square mile (6/km²).