Blairstown is a city in Henry County, Missouri, United States. The population was 141 at the 2000 census.
of the census of 2000, there were 141 people, 56 households, and 38 families residing in the city. The population density was 569.7 people per square mile (217.8/km²). There were 69 housing units at an average density of 278.8/sq mi (106.6/km²). The racial makeup of the city was 95.74% White, 0.71% African American, 1.42% Native American, 2.13% from other races. Hispanic or Latino of any race were 3.55% of the population.
There were 56 households out of which 33.9% had children under the age of 18 living with them, 46.4% were married couples living together, 14.3% had a female householder with no husband present, and 30.4% were non-families. 30.4% 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 2.52 and the average family size was 3.10.
In the city the population was spread out with 29.1% under the age of 18, 11.3% from 18 to 24, 26.2% from 25 to 44, 21.3% from 45 to 64, and 12.1% who were 65 years of age or older. The median age was 30 years. For every 100 females there were 98.6 males. For every 100 females age 18 and over, there were 96.1 males.
The median income for a household in the city was $21,250, and the median income for a family was $21,500. Males had a median income of $25,833 versus $20,500 for females. The per capita income for the city was $9,613. There were 13.6% of families and 21.2% of the population living below the poverty line, including 28.8% of under eighteens and 10.5% of those over 64.
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