2020 census

The 2020 United States census counted 56 people, 13 households, and 7 families in Aurora.^[7][8] The population density was 554.5 per square mile (214.1/km²). There were 27 housing units at an average density of 267.3 per square mile (103.2/km²).^[8][9] The racial makeup was 98.21% (55) white or European American (98.21% non-Hispanic white), 0.0% (0) black or African-American, 0.0% (0) Native American or Alaska Native, 0.0% (0) Asian, 0.0% (0) Pacific Islander or Native Hawaiian, 0.0% (0) from other races, and 1.79% (1) from two or more races.^[10] Hispanic or Latino of any race was 0.0% (0) of the population.^[11]

Of the 13 households, 30.8% had children under the age of 18; 53.8% were married couples living together; 7.7% had a female householder with no spouse or partner present. 38.5% of households consisted of individuals and 23.1% had someone living alone who was 65 years of age or older.^[8] The average household size was 2.0 and the average family size was 3.1.^[12] The percent of those with a bachelor’s degree or higher was estimated to be 1.8% of the population.^[13]

35.7% of the population was under the age of 18, 5.4% from 18 to 24, 26.8% from 25 to 44, 17.9% from 45 to 64, and 14.3% who were 65 years of age or older. The median age was 30.5 years. For every 100 females, there were 69.7 males.^[8] For every 100 females ages 18 and older, there were 71.4 males.^[8]

The 2016-2020 5-year American Community Survey estimates show that the median household income was $46,406 (with a margin of error of +/- $15,042) and the median family income was $46,250 (+/- $8,929).^[14] The median income for those above 16 years old was $40,469 (+/- $5,801).^[15] Approximately, 6.3% of families and 5.3% of the population were below the poverty line, including 0.0% of those under the age of 18 and 33.3% of those ages 65 or over.^[16][17]

2010 census

As of the census^[18] of 2010, there were 60 people, 24 households, and 17 families living in the city. The population density was 600.0 inhabitants per square mile (231.7/km²). There were 36 housing units at an average density of 360.0 per square mile (139.0/km²). The racial makeup of the city was 96.7% White and 3.3% Native American.

There were 24 households, of which 37.5% had children under the age of 18 living with them, 54.2% were married couples living together, 8.3% had a female householder with no husband present, 8.3% had a male householder with no wife present, and 29.2% were non-families. 29.2% of all households were made up of individuals, and 12.5% had someone living alone who was 65 years of age or older. The average household size was 2.50 and the average family size was 2.82.

The median age in the city was 38 years. 33.3% of residents were under the age of 18; 3.5% were between the ages of 18 and 24; 25% were from 25 to 44; 26.7% were from 45 to 64; and 11.7% were 65 years of age or older. The gender makeup of the city was 53.3% male and 46.7% female.

2000 census

As of the census^[19] of 2000, there were 79 people, 33 households, and 23 families living in the city. The population density was 782.5 inhabitants per square mile (302.1/km²). There were 39 housing units at an average density of 386.3 per square mile (149.2/km²). The racial makeup of the city was 98.73% White and 1.27% Native American.

There were 33 households, out of which 30.3% had children under the age of 18 living with them, 63.6% were married couples living together, 3.0% had a female householder with no husband present, and 27.3% were non-families. 27.3% of all households were made up of individuals, and 3.0% had someone living alone who was 65 years of age or older. The average household size was 2.39 and the average family size was 2.79.

In the city, the population was spread out, with 27.8% under the age of 18, 8.9% from 18 to 24, 29.1% from 25 to 44, 15.2% from 45 to 64, and 19.0% who were 65 years of age or older. The median age was 38 years. For every 100 females, there were 132.4 males. For every 100 females age 18 and over, there were 119.2 males.

The median income for a household in the city was $29,583, and the median income for a family was $51,667. Males had a median income of $28,125 versus $16,250 for females. The per capita income for the city was $24,213. There were no families and 9.0% of the population living below the poverty line, including no under eighteens and 8.3% of those over 64.