The county was created from the northeastern portion of Shawano County on July 3, 1959, in anticipation of the termination of the Menominee Indian Reservation in 1961. The reservation status was restored in 1973, and is now co-extensive with the county.
Most of the land within the county boundary is under Federal trust for the exclusive use by enrolled members of the Menominee nation. Scattered parcels that were purchased during termination, as well as many lots around the Legend Lake area in the southeastern part of the county, are the only parts of the county that are privately owned by non-Native Americans. Most of Menominee County's population consists of members of the Menominee nation.
and
The racial makeup of the county was 11.57% White, 0.07% Black or African American, 87.26% Native American, 0.02% Pacific Islander, 0.33% from other races, and 0.75% from two or more races. 2.67% of the population were Hispanic or Latino of any race. 5.0% were of German ancestry according to Census 2000. 89.8% spoke English, 7.0% Menominee and 1.6% Hmong as their first language.
