The outlet, Millsfield Pond Brook, flows northeastward to Clear Stream at the eastern boundary of the township.

Clear Stream, which crosses the northeastern corner of the township, is an eastward-flowing tributary of the Androscoggin River.

The southeastern part of the township drains to the Androscoggin River, via Newell Brook and the outlet of Moose Pond.

New Hampshire Route 26 crosses the northeastern part of Millsfield, following Clear Stream.

The road goes to the north of Mount Kelsey, the highest point in Millsfield at 3,472 feet (1,058 m) above sea level.

New Hampshire law allows towns with fewer than 100 residents to open the polls at midnight and close them as soon as all registered voters have cast their ballots.

Boldfaced names indicate the ultimate nationwide winner of each contest: In July 2016 residents voted[8] to seek incorporation as a town.