Park Ridge is a borough in Bergen County, in the U.S. state of New Jersey. As of the 2020 United States census, the borough's population was 8,883, its highest decennial census count ever and an increase of 238 (+2.8%) from the 2010 census count of 8,645, which in turn had reflected a decline of 63 (−0.7%) from the 8,708 counted at the 2000 census. Park Ridge has continued to grow in population since the 2020 census, by 557 (+6.3%) to an estimated 9,440 residents as of 2023.