Arrowhead Lake is an unincorporated community and census-designated place (CDP) in Cumberland County, in the U.S. state of New Jersey. It is in the northwestern part of the county, in the northern part of Stow Creek Township. A small artificial lake is in the northwestern part of the CDP, with a residential neighborhood on its southern shore.
The community is northwest of Shiloh and south of Marlboro. New Jersey Route 49 forms the eastern boundary of the CDP; the road heads southeast to Bridgeton and northwest to Salem.
Arrowhead Lake was first listed as a CDP prior to the 2020 census with a population of 126.
Arrowhead Lake first appeared as a census designated place in the 2020 U.S. census.
Students are zoned to Stow Creek Township School District (for elementary school) and Cumberland Regional School District (for high school).
The Stow Creek school district and the Greenwich Township School District have a cooperative agreement in which all students in grade levels Kindergarten through 4 in both school districts attend the Greenwich Township school facility, Morris Goodwin School, while all students in grades 5-8 in both school districts attend the Stow Creek school facility, Stow Creek School.