2020 census

The 2020 United States census counted 246 people, 109 households, and 73 families in Lancaster.^[10][11] The population density was 1,236.2 per square mile (477.3/km²). There were 109 housing units at an average density of 547.7 per square mile (211.5/km²).^[11][12] The racial makeup was 96.34% (237) white or European American (95.12% 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 3.66% (9) from two or more races.^[13] Hispanic or Latino of any race was 1.63% (4) of the population.^[14]

Of the 109 households, 39.4% had children under the age of 18; 46.8% were married couples living together; 24.8% had a female householder with no spouse or partner present. 29.4% of households consisted of individuals and 10.1% had someone living alone who was 65 years of age or older.^[11] The average household size was 2.8 and the average family size was 3.8.^[15] The percent of those with a bachelor’s degree or higher was estimated to be 4.9% of the population.^[16]

21.1% of the population was under the age of 18, 10.2% from 18 to 24, 21.1% from 25 to 44, 31.3% from 45 to 64, and 16.3% who were 65 years of age or older. The median age was 43.6 years. For every 100 females, there were 95.2 males.^[11] For every 100 females ages 18 and older, there were 90.2 males.^[11]

The 2016-2020 5-year American Community Survey estimates show that the median household income was $35,000 (with a margin of error of +/- $15,966) and the median family income was $60,000 (+/- $27,460).^[17] Males had a median income of $40,078 (+/- $14,878) versus $22,833 (+/- $8,285) for females. The median income for those above 16 years old was $24,938 (+/- $3,612).^[18] Approximately, 10.3% of families and 17.0% of the population were below the poverty line, including 25.9% of those under the age of 18 and 6.2% of those ages 65 or over.^[19][20]

2010 census

As of the census^[21] of 2010, there were 298 people, 108 households, and 87 families residing in the city. The population density was 1,354.5 inhabitants per square mile (523.0/km²). There were 117 housing units at an average density of 531.8 per square mile (205.3/km²). The racial makeup of the city was 98.0% White, 0.3% African American, 1.0% Native American, and 0.7% Asian.

There were 108 households, of which 38.9% had children under the age of 18 living with them, 65.7% were married couples living together, 10.2% had a female householder with no husband present, 4.6% had a male householder with no wife present, and 19.4% were non-families. 16.7% of all households were made up of individuals, and 10.2% had someone living alone who was 65 years of age or older. The average household size was 2.76 and the average family size was 3.08.

The median age in the city was 40 years. 27.9% of residents were under the age of 18; 6.4% were between the ages of 18 and 24; 23.8% were from 25 to 44; 29.6% were from 45 to 64; and 12.4% were 65 years of age or older. The gender makeup of the city was 50.7% male and 49.3% female.

2000 census

As of the census^[22] of 2000, there were 291 people, 107 households, and 81 families residing in the city. The population density was 1,307.5 inhabitants per square mile (504.8/km²). There were 117 housing units at an average density of 525.7 per square mile (203.0/km²). The racial makeup of the city was 98.28% White, 0.34% African American, 0.34% Native American, and 1.03% from two or more races.

There were 107 households, out of which 42.1% had children under the age of 18 living with them, 63.6% were married couples living together, 8.4% had a female householder with no husband present, and 23.4% were non-families. 21.5% of all households were made up of individuals, and 12.1% had someone living alone who was 65 years of age or older. The average household size was 2.72 and the average family size was 3.12.

In the city, the population was spread out, with 29.9% under the age of 18, 7.9% from 18 to 24, 30.9% from 25 to 44, 17.9% from 45 to 64, and 13.4% who were 65 years of age or older. The median age was 35 years. For every 100 females, there were 96.6 males. For every 100 females age 18 and over, there were 92.5 males.

The median income for a household in the city was $32,500, and the median income for a family was $37,188. Males had a median income of $29,000 versus $21,250 for females. The per capita income for the city was $12,921. About 10.4% of families and 11.6% of the population were below the poverty line, including 14.4% of those under the age of eighteen and 4.7% of those 65 or over.