Allamuchy Township is a township in Warren County, in the U.S. state of New Jersey. As of the 2020 United States census, the township's population was 5,335, an increase of 1,012 (+23.4%) from the 2010 census count of 4,323, which in turn reflected an increase of 446 (+11.5%) from the 3,877 counted in the 2000 census.
Alpha is a borough in Warren County, in the U.S. state of New Jersey. As of the 2020 United States census, the borough's population was 2,328, a decrease of 41 (−1.7%) from the 2010 census count of 2,369, which in turn reflected a decline of 113 (−4.6%) from the 2,482 counted in the 2000 census.
Belvidere is a town and the county seat of Warren County, in the U.S. state of New Jersey. As of the 2020 United States census, the town's population was 2,520, a decrease of 161 (−6.0%) from the 2010 census count of 2,681, which in turn reflected a decline of 90 (−3.2%) from the 2,771 counted in the 2000 census.
Blairstown is a township in Warren County, in the U.S. state of New Jersey. As of the 2020 United States census, the township's population was 5,704, a decrease of 263 (−4.4%) from the 2010 census count of 5,967, which in turn reflected an increase of 220 (+3.8%) from the 5,747 counted in the 2000 census.
Franklin Township is a township in Warren County, in the U.S. state of New Jersey. As of the 2020 United States census, the township's population was 2,968, a decrease of 208 (−6.5%) from the 2010 census count of 3,176, which in turn reflected an increase of 408 (+14.7%) from the 2,768 counted in the 2000 census.
Frelinghuysen Township is a township in Warren County, in the U.S. state of New Jersey. As of the 2020 United States census, the township's population was 2,199, a decrease of 31 (−1.4%) from the 2010 census count of 2,230, which in turn reflected an increase of 147 (+7.1%) from the 2,083 counted in the 2000 census.
Greenwich Township is a township in Warren County, in the U.S. state of New Jersey. As of the 2020 United States census, the township's population was 5,473, a decrease of 239 (−4.2%) from the 2010 census count of 5,712, which in turn reflected an increase of 1,347 (+30.9%) from the 4,365 counted in the 2000 census.
Hardwick Township is a township in Warren County, in the U.S. state of New Jersey. As of the 2020 United States census, the township's population was 1,598, a decrease of 98 (−5.8%) from the 2010 census count of 1,696, which in turn reflected an increase of 232 (+15.8%) from the 1,464 counted in the 2000 census.
Harmony Township is a township located in Warren County in the U.S. state of New Jersey. As of the 2020 United States census, the township's population was 2,503, a decrease of 164 (−6.1%) from the 2010 census count of 2,667, which in turn reflected a decline of 62 (−2.3%) from the 2,729 counted in the 2000 census.
Hope Township is a township in Warren County in the U.S. state of New Jersey. As of the 2020 United States census, the township's population was 1,835, a decrease of 117 (−6.0%) from the 2010 census count of 1,952, which in turn reflected an increase of 61 (+3.2%) from the 1,891 counted in the 2000 census. The 2010 population of 1,952 reflected an all-time high since the 1,903 recorded in the 1840 census, the first recorded population after the township was formed.
Independence Township is a township in Warren County, in the U.S. state of New Jersey. As of the 2020 United States census, the township's population was 5,469, a decrease of 193 (−3.4%) from the 2010 census count of 5,662, which in turn reflected an increase of 59 (+1.1%) from the 5,603 counted in the 2000 census.
Knowlton Township is a township in Warren County, in the U.S. state of New Jersey. As of the 2020 United States census, the township's population was 2,894, a decrease of 161 (−5.3%) from the 2010 census count of 3,055, which in turn reflected an increase of 78 (+2.6%) from the 2,977 counted in the 2000 census.
Liberty Township is a township in Warren County in the U.S. state of New Jersey. As of the 2020 United States census, the township's population was 2,670, a decrease of 272 (−9.2%) from the 2010 census count of 2,942, which in turn reflected an increase of 177 (+6.4%) from the 2,765 counted in the 2000 census.
Lopatcong Township is a township in Warren County, within the U.S. state of New Jersey. As of the 2020 United States census, the township's population was 8,776, an increase of 762 (+9.5%) from the 2010 census count of 8,014, which in turn reflected an increase of 2,249 (+39.0%) from the 5,765 counted in the 2000 census.
Mansfield Township is a township in Warren County, in the U.S. state of New Jersey. As of the 2020 United States census, the township's population was 7,781, its highest decennial census count ever, and an increase of 56 (+0.7%) from the 2010 census count of 7,725, which in turn reflected an increase of 1,072 (+16.1%) from the 6,653 counted in the 2000 census.
Oxford Township is a township in Warren County, in the U.S. state of New Jersey. As of the 2020 United States census, the township's population was 2,444, a decrease of 70 (−2.8%) from the 2010 census count of 2,514, which in turn reflected an increase of 207 (+9.0%) from the 2,307 counted in the 2000 census.
Pohatcong Township is a township in Warren County, in the U.S. state of New Jersey. As of the 2020 United States census, the township's population was 3,241, a decrease of 98 (−2.9%) from the 2010 census count of 3,339, which in turn reflected a decline of 77 (−2.3%) from the 3,416 counted in the 2000 census.
Washington is a borough in Warren County, in the U.S. state of New Jersey. As of the 2020 United States census, the borough's population was 7,299, an increase of 838 (+13.0%) from the 2010 census count of 6,461, which in turn reflected a decline of 251 (−3.7%) from the 6,712 counted in the 2000 census.
Washington Township is a township in Warren County, in the U.S. state of New Jersey. As of the 2020 United States census, the township's population was 6,492, a decrease of 159 (−2.4%) from the 2010 census count of 6,651, which in turn reflected an increase of 403 (+6.5%) from the 6,248 counted in the 2000 census.
White Township is a township in Warren County, in the U.S. state of New Jersey. As of the 2020 United States census, the township's population was 4,606, a decrease of 276 (−5.7%) from the 2010 census count of 4,882, which in turn reflected an increase of 637 (+15.0%) from the 4,245 counted in the 2000 census.
