[5][6] The city includes three places listed on the National Register of Historic Places: Anderson County Courthouse, Sennett and Bertha Kirk House, and Shelley-Tipton House.

[7] Garnett is famous for its fossil finds from the late Carboniferous period.

The climate in this area is characterized by hot, humid summers and generally mild to cool winters.

[8] The 2020 United States census counted 3,242 people, 1,363 households, and 791 families in Garnett.

There were 1,542 housing units at an average density of 500.3 per square mile (193.2/km2).

36.9% of households consisted of individuals and 19.6% had someone living alone who was 65 years of age or older.

There were 1,591 housing units at an average density of 513.2 per square mile (198.1/km2).

34.0% of all households were made up of individuals, and 19.4% had someone living alone who was 65 years of age or older.

There were 1,597 housing units at an average density of 533.2 per square mile (205.9/km2).

34.7% of all households were made up of individuals, and 21.1% had someone living alone who was 65 years of age or older.

[25] Garnett is also home to St. Rose Philippine Duchesne Catholic School.

Built in 1947, St. Rose Philippine Duchesne serves grades K-8, and is a member of the Roman Catholic Archdiocese of Kansas City in Kansas, network of schools.

There is a bike path at Prairie Spirit Trail State Park, reusing the former Santa Fe Railroad through Garnett.