what county is rockaway nj in
Rockaway, New Jersey. Rockaway is a borough in Morris County, New Jersey, United States. As of the 2010 United States Census, the borough's population was 6,438, reflecting a decline of 35 (-0.5%) from the 6,473 counted in the 2000 Census, which had in turn increased by 230 (+3.7%) from the 6,243 counted in the 1990 Census.