2000 Census
As of the census of 2000, there were 582 people, 240 households, and 154 families residing in the city. The population density was 519.3 people per square mile (200.6/km²). There were 261 housing units at an average density of 232.9 per square mile (90.0/km²). The racial makeup of the city was 98.28% White. Four persons (0.69%) identified as Asian, one (0.17%) as Pacific Islander, two (0.34%) from other races, and three (0.52%) from two or more races. Two persons (0.34%) were Hispanic or Latino of any race.
There were 240 households out of which 27.5% had children under the age of 18 living with them, 52.5% were married couples living together, 8.3% had a female householder with no husband present, and 35.8% were non-families. 28.8% of all households were made up of individuals and 11.3% had someone living alone who was 65 years of age or older. The average household size was 2.26 and the average family size was 2.73.
In the city the population was spread out with 20.8% under the age of 18, 7.9% from 18 to 24, 26.8% from 25 to 44, 21.1% from 45 to 64, and 23.4% who were 65 years of age or older. The median age was 42 years. For every 100 females there were 90.8 males. For every 100 females age 18 and over, there were 90.5 males.
The median income for a household in the city was $30,278, and the median income for a family was $36,750. Males had a median income of $31,364 versus $23,125 for females. The per capita income for the city was $15,447. About 5.8% of families and 10.0% of the population were below the poverty line, including 4.1% of those under age 18 and 22.0% of those age 65 or over.
Read more about this topic: Cosmos, Minnesota, Demographics