fanwood is in what county
Fanwood, New Jersey. Fanwood is a borough in Union County, New Jersey, United States. As of the 2010 United States Census, the borough's population was 7,318 reflecting an increase of 144 (+2.0%) from the 7,174 counted in the 2000 Census, which had in turn increased by 59 (+0.8%) from the 7,115 counted in the 1990 Census.