Rockland County is among the top five highest-earning counties in New York State. That’s according to a report compiled earlier this month by newswire, Stacker. Here in Rockland, based on U.S. Census data, the average median household income was $94,840. That’s 33 percent above the state average and 46 percent above the national average. Only Westchester, Suffolk, Putnam and Nassau Counties ranked higher.