 25.1% were of English, 15.1% German and 14.8% American ancestry.Those citing "American" ancestry in Fremont County are of overwhelmingly English extraction, however most English Americans identify simply as having American ancestry because their roots have been in North America for so long, in some cases since the 1600s.There were 3,885 households out of which 39.50% had children under the age of 18 living with them, 67.90% were married couples living together, 6.90% had a female householder with no husband present, and 22.00% were non-families.