There’s so much to learn about Ronkonkoma, but there’s no need to feel overwhelmed. Before you pick up the keys to your rental car, let’s start off with the basics.This town sits 6 miles to the north of West Sayville, and 249 miles northeast of Washington, the nation’s capital.It never hurts to know how many people live in the place you’re planning to visit. In this area of Suffolk County, the population is around about 19,100.