2020 census As of the
2020 census, Cadiz had a population of 3,051. The median age was 44.8 years. 20.7% of residents were under the age of 18 and 23.2% of residents were 65 years of age or older. For every 100 females there were 90.0 males, and for every 100 females age 18 and over there were 84.7 males age 18 and over. 0.0% of residents lived in urban areas, while 100.0% lived in rural areas. There were 1,341 households in Cadiz, of which 26.3% had children under the age of 18 living in them. Of all households, 40.7% were married-couple households, 18.6% were households with a male householder and no spouse or partner present, and 33.5% were households with a female householder and no spouse or partner present. About 35.2% of all households were made up of individuals and 17.9% had someone living alone who was 65 years of age or older. of 2010, there were 3,353 people, 1,415 households, and 920 families living in the village. The population density was . There were 1,590 housing units at an average density of 178.6 per square mile (68.8 km). The
racial makeup of the village was 87.4% White, 8.4% African American, 0.3% Asian, 0.3% from other races, and 3.5% from two or more races. Hispanic or Latino of any race were 0.8% of the population. Of the 1,415 households, 29.8% had children under the age of 18 living with them, 44.8% were married couples living together, 14.8% had a female householder with no husband present, and 35.0% were non-families. 30.7% of households were one person and 12.9% were one person aged 65 or older. The average household size was 2.32 and the average family size was 2.86. 39.1% of households were renters and 60.9% were home owners. Families made up 73.3% of all home owners and 52.1% of all renters. The age distribution was 24.8% under the age of 20, 22.9% from 20 to 40, 27.2% from 40 to 60, 19.3% from 60 to 80, and 5.9% who were 80 years of age or older. The median age was 42.3 years. For every 100 females there were 89.3 males. For every 100 females age 18 and over, there were 84.8 males. According to 2006-2010 American Community Survey 5-Year Estimates by the
US Census Bureau, Of the 1,391 households 28.3% had children under the age of 18 living with them, 49.2% were married couples living together, 13.3% had a female householder with no husband present, and 34.1% were non-families. 30.9% of households were one person and 16.0% were one person aged 65 or older. The average household size was 2.30 and the average family size was 2.85. The age distribution was 22.3% under the age of 18, 7.5% from 18 to 24, 23.6% from 25 to 44, 25.6% from 45 to 64, and 20.9% 65 or older. The median age was 43 years. For every 100 females there were 82.3 males. For every 100 females age 18 and over, there were 77.4 males. The median household income was $29,518 and the median family income was $42,049. Males had a median income of $33,233 versus $17,192 for females. The per capita income for the village was $17,405. About 12.5% of families and 15.7% of the population were below the
poverty line, including 24.2% of those under age 18 and 8.9% of those age 65 or over. ==Education==