When I say that Troop D has the most territory to cover, i assume that since some of the towns are so unpopulated like Scotland, Sterling, Canterbury that they must have 1 trooper for like four towns.
You are right Adam, Troop D has a lot of area to cover as the majority of their towns run a Resident Trooper program or cover as local police.
Here is the lonk for the RS and CSP coverage towns: https://www.cga.ct.gov/2016/rpt/pdf/2016-R-0246.pdf