Barnsdall is a city in Osage County, Oklahoma, United States. The population was 1,243 at the 2010 census, a decline of 6.2 percent from 1,325 at the 2000 census.
Barnsdall is located at 36°33′34″N 96°09′40″W / 36.559344°N 96.161062°W / 36.559344; -96.161062. It is 17 miles (27 km) southeast of Pawhuska, the Osage County seat, and 40 miles (64 km) northwest of Tulsa.
According to the United States Census Bureau, the city has a total area of 0.6 square miles (1.6 km), all of it land.
As of the census of 2000, there were 1,325 people, 542 households, and 357 families residing in the city. The population density was 2,195.3 people per square mile (852.6/km). There were 630 housing units at an average density of 1,043.8 per square mile (405.4/km). The racial makeup of the city was 74.26% White, 15.62% Native American, 0.30% Asian, 0.23% from other races, and 9.58% from two or more races. Hispanic or Latino of any race were 1.81% of the population.
There were 542 households out of which 28.4% had children under the age of 18 living with them, 53.7% were married couples living together, 9.0% had a female householder with no husband present, and 34.1% were non-families. 31.7% of all households were made up of individuals and 16.6% had someone living alone who was 65 years of age or older. The average household size was 2.38 and the average family size was 3.00.
In the city, the population was spread out with 24.5% under the age of 18, 8.4% from 18 to 24, 24.6% from 25 to 44, 22.8% from 45 to 64, and 19.8% who were 65 years of age or older. The median age was 40 years. For every 100 females, there were 85.6 males. For every 100 females age 18 and over, there were 80.4 males.
The median income for a household in the city was $25,598, and the median income for a family was $34,934. Males had a median income of $31,731 versus $18,472 for females. The per capita income for the city was $13,435. About 8.0% of families and 11.0% of the population were below the poverty line, including 9.1% of those under age 18 and 15.9% of those age 65 or over.