Rockleigh (pronounced ROCK-lee) is a
borough in
Bergen County,
New Jersey, United States. As of the
2010 United States Census, the borough's population was 531, reflecting an increase of 140 (+35.8%) from the 391 counted in the
2000 Census, which had in turn increased by 121 (+44.8%) from the 270 counted in the
1990 Census. Bordering
Alpine, a community ranked America's most expensive ZIP code by
Forbes, Rockleigh has a similar residential character, with large single-family homes on large plots of land.