Question: What was the population of Osage County, Kansas in 2010?

Context paragraphs:
Osage County, Kansas: Osage County (county code OS) is a county located in the U.S. state of Kansas.  As of the 2010 census, the county population was 16,295.  Its county seat is Lyndon, and its most populous city is Osage City.  The county was originally organized in 1855 as Weller County, and was renamed in 1859 after the Osage River that runs through it, which is itself named for the Osage Native American Tribe.

Osage Hills: The Osage Hills is a hilly area in Oklahoma, commonly known as "The Osage".  The name refers to the broad rolling hills and rolling tallgrass prairie and Cross Timbers encompassing Osage County and surrounding areas, including portions of Mayes, Tulsa, Washington and Kay Counties.  The Osage is the southern extension of the Flint Hills of Kansas.

Osage State Fishing Lake: Osage State Fishing Lake is located in northern Osage County, Kansas.  It is a mile east of US 75.  Scranton, Kansas, is to the lake's northwest and Overbrook, Kansas, is to the northeast.  Osage Lake is a freshwater man-made lake, constructed in 1955.  It has a surface area of 140 acres, The parkland in which the lake is contained has 366 acreas of land, mostly tall grass prairie with numerous wooded areas.  The lake is owned by the State of Kansas.

Osage City Municipal Airport: Osage City Municipal Airport (FAA LID: 53K) is a city-owned public-use airport located one nautical mile (1.6 km) east of the central business district of Osage City, a city in Osage County, Kansas, United States.

Osage City, Kansas: Osage City is a city in Osage County, Kansas, United States.  As of the 2010 census, the city population was 2,943.

Peterton, Kansas: Peterton is an unincorporated community in Osage County, Kansas, in the United States.

Osage, Oklahoma: Osage is a town in Osage County, Oklahoma, United States.  Also known as Osage City, it lies within the Osage Reservation on the shore of Lake Keystone.  The population was 156 at the 2010 census, down 17 percent from 188 at the 2000 census.

Linn, Missouri: Linn is a city in Osage County, Missouri, USA.  The population was 1,459 at the 2010 census.  It is the county seat of Osage County.  Linn is part of the Jefferson City, Missouri Metropolitan Statistical Area.

Osage County, Oklahoma: Osage County is the largest county by area in the state of Oklahoma in the United States.  Created in 1907 when Oklahoma was admitted as a state, the county is named for and is home to the federally recognized Osage Nation.  The county is coextensive with the Osage Nation Reservation, established by treaty in the 19th century when the Osage relocated there from Kansas.  The county seat is in Pawhuska, Oklahoma, one of the first three towns established in the county.  The total population of the county is 47,987.

Osage County, Missouri: Osage County is a county in the central part of the U.S. state of Missouri.  As of the 2010 census, the population was 13,878.  Its county seat is Linn.  The county was organized January 29, 1841, and named from the Osage River.

Supporting paragraphs: Peterton, Kansas Osage County, Kansas
Answer: 16,295