[12] As of the census[1] of 2020, there were 8,514 people, 3,521 households, and 2,236 families residing in the township.

21.5% of all households were made up of individuals, and 13.7% had someone living alone who was 65 years of age or older.

Northfield Township is served by four separate public school districts.

Ann Arbor Public Schools serves small portions of the southern area of the township.

Whitmore Lake Public Schools serves most of the southeast to northwest areas of the township, and South Lyon Community Schools in South Lyon serves the northeast portion.