There’s a whole lot to learn about Westhampton Beach, but there’s no need to feel overwhelmed. Before you get behind the wheel of your rental car, let’s get started with a few basics.This town sits 25 miles to the east of West Sayville, and 267 miles northeast of Washington, the nation’s capital.If you’re traveling with the kids and they’re getting tired of road trip bingo, why not test them to see if they can tell you what the population of this area of Town of Southampton is? (Just in case you’re wondering, it’s 1,700!)