It is located 4 kilometres to the west of the historic gold-mining town of Arrowtown.

The resort includes five restaurants, a bar/café, a spa and a 36 hole golf course.

Millbrook is privately owned by the Ishii family, though individual residences within the resort are owned by a diverse group of investors, largely from New Zealand but also from Australia and around the world.

[3] Before the 2023 census, Millbrook had a different boundary, covering 3.29 km2 (1.27 sq mi).

Although some people chose not to answer the census's question about religious affiliation, 53.7% had no religion, and 46.3% were Christian.