Climate

The climate in this area is characterized by hot, humid summers and generally mild to cool winters. According to the Köppen Climate Classification system, Grantville has a humid subtropical climate, abbreviated "Cfa" on climate maps.^[6]

2020 census

The 2020 United States census counted 182 people, 71 households, and 47 families in Grantville.^[7][8] The population density was 296.9 per square mile (114.6/km²). There were 72 housing units at an average density of 117.5 per square mile (45.3/km²).^[8][9] The racial makeup was 87.36% (159) white or European American (82.97% non-Hispanic white), 0.0% (0) black or African-American, 3.85% (7) Native American or Alaska Native, 0.55% (1) Asian, 0.0% (0) Pacific Islander or Native Hawaiian, 3.85% (7) from other races, and 4.4% (8) from two or more races.^[10] Hispanic or Latino of any race was 8.79% (16) of the population.^[11]

Of the 71 households, 32.4% had children under the age of 18; 43.7% were married couples living together; 23.9% had a female householder with no spouse or partner present. 26.8% of households consisted of individuals and 14.1% had someone living alone who was 65 years of age or older.^[8] The average household size was 3.3 and the average family size was 3.8.^[12] The percent of those with a bachelor’s degree or higher was estimated to be 18.7% of the population.^[13]

23.1% of the population was under the age of 18, 9.9% from 18 to 24, 24.7% from 25 to 44, 17.0% from 45 to 64, and 25.3% who were 65 years of age or older. The median age was 34.3 years. For every 100 females, there were 89.6 males.^[8] For every 100 females ages 18 and older, there were 86.7 males.^[8]

The 2016-2020 5-year American Community Survey estimates show that the median household income was $71,417 (with a margin of error of +/- $1,835) and the median family income was $72,000 (+/- $11,742).^[14] Males had a median income of $42,361 (+/- $40,043).^[15]