302,143/2,968.7 = 101.776198336 ≈ 102 people/Sq. Mile
1. Divide the number of people by the area
2. Round to the the nearest person per Sq mile (if the number behind the number you want to round to is bigger or equal than 5 you increase the number you want to round to i. e. 2.5 ≈ 3, 2.3 ≈ 2, 1,23456 ≈ 1,235 if rounding to the third decimal point)
