New census data says that college graduates aren’t doing well in New Jersey. Young adults are better educated but they earn less and live longer with their parents. The census report looks at data between 2009 and 2013. It also says that New Jersey’s young adults are less likely to marry than the rest of the country. New Jersey’s 18-34 population earns a little more than $41,000 as a median income, but that is about $4,000 less than 1990 when adjusted for inflation.