Question: Barclay Henley was born in a city whose population at the 2010 census was what?
Context: Barclay Henley (March 17, 1843 – February 15, 1914) was a United States Representative from California.  He was born in Charlestown, Clark County, Indiana.  He moved with his parents to San Francisco, California in 1853 and returned to Indiana in 1858.  He attended the common schools and Hanover College.  He returned to San Francisco in 1861 and studied law.  He was admitted to the bar in 1864 and commenced practice in Santa Rosa, California. Gilmer is a town in and the county seat of Upshur County, Texas, United States.  It is best known for being the home of the East Texas Yamboree, as well as the birthplace of popular music singers Don Henley of the Eagles band and Johnny Mathis, as well as blues musician Freddie King.  The population was 4,905 at the 2010 census.  The city's namesake is a former United States Secretary of the Navy, Thomas Walker Gilmer. Bristol is a suburban city located in Hartford County, Connecticut, United States, 20 mi southwest of Hartford.  As of the 2010 census, the population of the city was 60,477.  Bristol is best known as the home of ESPN, whose central studios are in the city.  Bristol is also home to Lake Compounce, America's oldest continuously operating theme park.  Bristol was known as a clock-making city in the 19th century, and is home to the American Clock & Watch Museum.  Bristol's nicknames include the "Bell City", because of a history manufacturing innovative spring-driven doorbells, and the "Mum City", because it was once a leader in chrysanthemum production and still holds an annual Bristol Mum Festival.  In 2010, Bristol was ranked 84th on "Money" Magazine's "Best Places to Live".  In 2013, "Hartford Magazine" ranked Bristol as Greater Hartford's top municipality in the "Best Bang for the Buck" category. The Maysville Micropolitan Statistical Area (μSA), as defined by the United States Census Bureau, is coterminous with Mason County, Kentucky, whose county seat and largest city is Maysville.  As of the 2010 census, the population of Mason County and the current µSA was 17,490, and 2014 Census Bureau estimates place the population at 17,166. Charlestown is a city in Clark County, Indiana, United States.  The population was 7,585 at the 2010 census. Niantic is a village in Macon County, Illinois, United States whose population was 699 at the 2010 census. Haviland is a city in Kiowa County, Kansas, United States.  As of the 2010 census, the city population was 701.  It is home of Barclay College and known for meteorite finds connected to the Haviland Crater and for an annual meteorite festival held in July. Inkster is a city in Wayne County, Michigan, United States.  At the 2010 census, the city population was 25,369.  It is one of the few Metro Detroit suburbs whose population is majority African American. Asbury is a city in Dubuque County, Iowa, United States, and a suburb of the city of Dubuque.  It is part of the Dubuque, Iowa Metropolitan Statistical Area.  The population was 4,357 at the 2010 census.  Asbury is the second-largest city in Dubuque County, surpassing Dyersville, Iowa to become the second-largest in the 2010 U.S. Census count.  The city is largely a bedroom community, made up of spacious, new subdivisions whose residents work in Dubuque or Peosta, Iowa. Sierra Madre is a city in Los Angeles County, California whose population was 10,917 at the 2010 U.S. Census, up from 10,580 at the time of the 2000 U.S. Census.  The city is located in the foothills of the San Gabriel Valley below the southern edge of the Angeles National Forest.  Pasadena and Altadena are to its west, with Arcadia to its south and east.  Sierra Madre is known as "Wisteria City", and its city seal is decorated with a drawing of the now widely known 500 ft vine.  It is also called the "Village of the Foothills" and was an All-America City in 2007.
Answer: 7,585