2020 census As of the
2020 census, Grandy had a population of 2,776. The median age was 46.9 years. 19.0% of residents were under the age of 18 and 22.4% of residents were 65 years of age or older. For every 100 females there were 107.8 males, and for every 100 females age 18 and over there were 106.0 males age 18 and over. 0.0% of residents lived in urban areas, while 100.0% lived in rural areas. There were 1,133 households in Grandy, of which 29.6% had children under the age of 18 living in them. Of all households, 51.9% were married-couple households, 17.4% were households with a male householder and no spouse or partner present, and 22.3% were households with a female householder and no spouse or partner present. About 22.8% of all households were made up of individuals and 13.1% had someone living alone who was 65 years of age or older. There were 1,386 housing units, of which 18.3% were vacant. The homeowner vacancy rate was 1.8% and the rental vacancy rate was 6.9%.
Note: the US Census treats Hispanic/Latino as an ethnic category. This table excludes Latinos from the racial categories and assigns them to a separate category. Hispanics/Latinos can be of any race. ==References==