2020 census As of the
2020 census, Frost had a population of 620. The median age was 33.0 years. 31.3% of residents were under the age of 18 and 12.6% of residents were 65 years of age or older. For every 100 females there were 96.8 males, and for every 100 females age 18 and over there were 101.9 males age 18 and over. There were 221 households in Frost, of which 43.4% had children under the age of 18 living in them. Of all households, 48.9% were married-couple households, 16.3% were households with a male householder and no spouse or partner present, and 29.4% were households with a female householder and no spouse or partner present. About 20.8% of all households were made up of individuals and 10.4% had someone living alone who was 65 years of age or older. Males working
full-time jobs had median earnings of $65,625 compared to $39,286 for females. Out of the 729 people with a determined poverty status, 10.4% were below the
poverty line; 9.7% of minors and 3.2% of seniors were below the poverty line. The same survey recorded residents self-identifying with various ethnic ancestries. People of
American descent made up 7.8% of the population of the town, followed by
Irish at 7.7%,
English at 7.0%,
German at 5.3%,
Hungarian at 2.4%,
Scotch-Irish at 1.5%,
Scottish at 1.4%,
Swedish at 1.2%, and
French at 0.9%. ==Education==