2020 census As of the
2020 census, Mayer had a population of 1,558. The median age was 56.1 years. 15.6% of residents were under the age of 18 and 29.2% of residents were 65 years of age or older. For every 100 females there were 112.6 males, and for every 100 females age 18 and over there were 113.1 males age 18 and over. 0.0% of residents lived in urban areas, while 100.0% lived in rural areas. There were 728 households in Mayer, of which 15.4% had children under the age of 18 living in them. Of all households, 41.9% were married-couple households, 28.0% were households with a male householder and no spouse or partner present, and 22.5% were households with a female householder and no spouse or partner present. About 38.5% of all households were made up of individuals and 20.2% had someone living alone who was 65 years of age or older. Of the 585 households 26% had children under the age of 18 living with them, 52% were married couples living together, 8% had a female householder with no husband present, and 35% were non-families. 28% of households were one person and 13% were one person aged 65 or older. The average household size was 2.4 and the average family size was 2.9. The age distribution was 24% under the age of 18, 6% from 18 to 24, 23% from 25 to 44, 28% from 45 to 64, and 19% 65 or older. The median age was 44 years. For every 100 females, there were 99.2 males. For every 100 females age 18 and over, there were 97.6 males. The median household income was $28,412 and the median family income was $33,988. Males had a median income of $38,304 versus $21,417 for females. The per capita income for the CDP was $14,297. About 14% of families and 19% of the population were below the
poverty line, including 13% of those under age 18 and 17% of those age 65 or over. ==Education==