Locust Valley. So much to see and do, so little time. Before you set off in your rental car and discover the place, we’ll fill you in on some of the basics.You’ll find it 22 miles from West New York and 12 miles away from White Plains.If you’re traveling with the young ones and they’re getting bored of the license plate game, why not give them a quick quiz to see if they know what the population of this area of Nassau County is? (In case you’re not too sure yourself, it’s 3,400!)