The Northern Harrier breeds throughout much of Canada, the western and northwestern sections of the United States and Kentucky, Virginia, and West Virginia. During the winter months, the northern birds will migrate south to the southern section of the United States, Mexico, and Central America.
In Florida, this species is an abundant wintering species seen throughout most of Florida. It is a rare summer resident. Although several nests have been found in northern Florida, no records of confirmed breeding has been established.