Flanders is an unincorporated community and census-designated place (CDP)[5] in Mount Olive Township, in southwestern Morris County, New Jersey, United States.

U.S. Route 206 passes through the community to the west of its center, leading north 4 miles (6 km) to Netcong and south 5 miles (8 km) to Chester.

[8] Drakes Brook, a southwest-flowing tributary of the South Branch of the Raritan River, passes through the center of town.

[1] As of the 2020 United States census, the Flanders CDP's population was 9,832,[2] a decrease of 2,736 (−21.8%) from the 12,568 enumerated at the 2010 census in the Flanders ZIP Code Tabulation Area,[11] which in turn reflected an increase of 351 (+2.9%) from the 12,217 counted in the 2000 census.

[10] People who were born in, residents of, or otherwise closely associated with Flanders include: