Elgin is a city in Chautauqua County, Kansas, United States, on the state line with Oklahoma. As of the 2010 census, the city population was 89.
Elgin is located at 37°0′6″N 96°16′51″W / 37.00167°N 96.28083°W (37.001608, -96.280703). According to the United States Census Bureau, the city has a total area of 0.2 square miles (0.52 km2), all of it land.
As of the census of 2000, there were 82 people, 44 households, and 22 families residing in the city. The population density was 441.8 people per square mile (166.6/km²). There were 54 housing units at an average density of 290.9 per square mile (109.7/km²). The racial makeup of the city was 91.46% White and 8.54% Native American.
There were 44 households out of which 18.2% had children under the age of 18 living with them, 36.4% were married couples living together, 6.8% had a female householder with no husband present, and 50.0% were non-families. 50.0% of all households were made up of individuals and 29.5% had someone living alone who was 65 years of age or older. The average household size was 1.86 and the average family size was 2.59.
In the city the population was spread out with 22.0% under the age of 18, 3.7% from 18 to 24, 17.1% from 25 to 44, 26.8% from 45 to 64, and 30.5% who were 65 years of age or older. The median age was 52 years. For every 100 females there were 90.7 males. For every 100 females age 18 and over, there were 73.0 males.
The median income for a household in the city was $14,500, and the median income for a family was $21,563. Males had a median income of $21,250 versus $14,583 for females. The per capita income for the city was $9,993. There were 21.1% of families and 17.9% of the population living below the poverty line, including no under eighteens and 20.7% of those over 64.