Fairfield is a township in far northwestern Essex County, New Jersey, near the borders of Morris and Passaic counties. It is one of Essex County's smaller municipalities, with a population of roughly 7,900, yet its role in the region is larger than its headcount suggests: U.S. Route 46 runs through the township as a major commercial artery, and Fairfield is home to a substantial concentration of businesses, offices, and light-industrial operations that give it a large daytime working population. That dual character — quiet residential streets alongside a busy commercial corridor — defines life in Fairfield. Historically an agricultural and then suburban community, the township grew into a northern New Jersey business hub as Route 46 developed into a regional shopping and employment spine. Today residents can reach a wide range of retail, dining, and services without leaving town, while the residential neighborhoods retain a calm, low-density feel. Education is a significant draw. Students in kindergarten through sixth grade attend the Fairfield Public Schools, and older students go to the West Essex Regional School District, which operates West Essex Middle School and West Essex High School in neighboring North Caldwell and serves Fairfield alongside Essex Fells, North Caldwell, and Roseland. Recreation centers on the Fairfield Recreation Complex, with its sports fields, walking trails, and playground, plus a network of neighborhood parks and the Fairfield Free Public Library. The township suits families and professionals who want strong regional schools, convenient highway access, and a small-town residential setting in the heart of northern New Jersey's commuter belt, within reach of New York City and the region's corporate corridors.