Butler is a borough in Morris County, New Jersey, United States. As of the 2020 United States census, the borough’s population was 8,047, an accumulation of 508 (+6.7%) from the 2010 census total of 7,539, which in face reflected an accumulation of 119 (+1.6%) from the 7,420 counted in the 2000 census.

Butler was incorporated as a borough by an feat of the New Jersey Legislature upon March 13, 1901, from portions of Pequannock Township.

The area now known as Butler was originally called “West Bloomingdale” and was sparsely populated. Water power brought manufacturing entities to the area. In 1857, The Pequannock Valley Paper Company moved from Bergen County and in 1868 the Newbrough Hard Rubber Company built a factory, both based along the Pequannock River. These were two significant economic entities that contributed to the addition of the Borough. In 1871, the New Jersey Midland Railroad extended track through Butler from Paterson, making an important transportation membership for both passengers and freight. The northern terminus for the New York, Susquehanna and Western Railway’s passenger encourage was located at Butler until 1966. The railroad nevertheless carries freight through Butler.

The growing community was unlimited the name “Butler” in 1881 after Richard Butler, who had taken ownership of the Hard Rubber Company. A Post Office was customary and a larger railroad station was built. This station has been the Borough Museum in the past 1977. The Hard Rubber Company eventually complex with additional businesses and became the American Hard Rubber Company in 1898. A “Soft” Rubber Company built a factory just along Main Street. The borough continued to increase as extra factories and supporting businesses were established. The population in 1920 was 2,265 people. By 1950, it was 4,063.