Question: As of 2010, what was the population of the county that was named after the 13th Speaker of the House of Representatives?

Passages:
Sabur Oladimeji "Dimeji" Bankole (born 14 November 1969) is a Nigerian politician and 9th Speaker of the House of Representatives of Nigeria.  Elected at the age of 37, Bankole is the youngest Speaker in the history of the House. Theodore Medad Pomeroy (December 31, 1824 – March 23, 1905) was an American businessman and politician from New York who served as the 26th Speaker of the United States House of Representatives from March 3, 1869, to March 4, 1869, the shortest American speakership term in history.  He represented New York's 24th congressional district in the United States House of Representatives from 1861 to 1869.  He also served as the mayor of Auburn, New York, from 1875 to 1876, and in the New York State Senate from 1878 to 1879. Edwin H. Lothrop was a politician from Michigan who served in the Michigan House of Representatives both prior to and after statehood, and who served as Speaker of the House during the 9th Legislature (coincidentally, as the 9th Speaker). Polk County is a county located in the southeastern corner of the U.S. state of Tennessee.  As of the 2010 census, the population was 16,825.  Its county seat is Benton.  The county was created on November 28, 1839, from parts of Bradley and McMinn counties.  The county was named after then-governor (and future president) James K. Polk. G. Steven Rowe, known commonly as Steve Rowe, is a former Maine politician.  A Democrat, he first entered politics in 1992 as a member of the Maine House of Representatives.  In 1998, he became the 94th Speaker of the Maine House of Representatives, serving until he was term-limited from the House in 2000.  In 2001, Rowe was elected as the 54th Maine Attorney General, serving eight years in that position. Sir Matthew Henry Oram {'1': ", '2': ", '3': ", '4': "} (2 June 1885 – 22 January 1969) was a New Zealand politician of the National Party.  He was the 13th Speaker of the House of Representatives, from 1950 to 1957. John Nance Garner IV (November 22, 1868 – November 7, 1967), known among his contemporaries as "Cactus Jack", was an American Democratic politician and lawyer from Texas.  He was the 39th Speaker of the United States House of Representatives from 1931 to 1933.  He was also the 32nd Vice President of the United States, serving from 1933 to 1941.  Along with Schuyler Colfax, Garner is one of two individuals to serve as Vice President of the United States and Speaker of the United States House of Representatives. Thomas Phillip "Tip" O'Neill Jr. (December 9, 1912 – January 5, 1994) was an American politician who served as the 47th Speaker of the United States House of Representatives from 1977 to 1987, representing northern Boston, Massachusetts as a Democrat from 1953 to 1987.  The only Speaker to serve for five complete consecutive Congresses, he is the third longest-serving Speaker in American history after Sam Rayburn and Henry Clay. James Knox Polk (November 2, 1795 – June 15, 1849) was the 11th President of the United States (1845–49).  He previously served as the 13th Speaker of the House of Representatives and as Governor of Tennessee.  A protege of Andrew Jackson, Polk was a member of the Democratic Party and an adherent of Jacksonian democracy and Manifest Destiny.  During his presidency, the United States expanded significantly with the annexation of Republic of Texas, the Oregon Treaty, and the conclusion of the Mexican-American War. Thomas Stephen Foley, KBE (March 6, 1929 – October 18, 2013) was an American lawyer and politician who served as the 49th Speaker of the United States House of Representatives from 1989 to 1995.  A member of the Democratic Party Foley represented Washington's 5th congressional district as from 1965 to 1995.  Foley was the first Speaker of the House since 1862 to be defeated in a re-election campaign.

Supporting sentences:
Polk County is a county located in the southeastern corner of the U.S. state of Tennessee.  As of the 2010 census, the population was 16,825.  He previously served as the 13th Speaker of the House of Representatives and as Governor of Tennessee.