Simplify the following text for a Grade 11 native English-speaking person.
Original: Capital Region International Airport , is a public airport located in DeWitt Township , Clinton County , Michigan .
Simplified: Capital Region International Airport covers 2160 a. Located at the boundary of three counties , most of the airport lies in DeWitt Township ( Clinton County ) , with small portions in Watertown Township ( Clinton County ) , Delta Township ( Eaton County ) , and the city of Lansing ( Ingham County ) .