Seminole, of which 41.0% had children under the age of 18 living in them. Of all households, 54.3% were married-couple households, 17.1% were households with a male householder and no spouse or partner present, and 24.6% were households with a female householder and no spouse or partner present. About 23.6% of all households were made up of individuals and 10.3% had someone living alone who was 65 years of age or older.

There were 2,778 housing units, of which 11.1% were vacant. The homeowner vacancy rate was 1.9% and the rental vacancy