Question: According to the 2010 census, what was the population of the city in which Robert Milton "Bob" Hartsfield was born?

Context articles: Riverdale, Georgia
Union, South Carolina
Bob Hartsfield
Murrieta, California
College Park, Georgia
Milton, Georgia
Huaihua
Roswell, Georgia
Milton, Vermont
Altoona, Pennsylvania

Riverdale is a city in Clayton County, Georgia, United States.
 The population was 15,134 at the 2010 census, up from 12,478 in 2000.
 Riverdale is a suburb just south of Hartsfield–Jackson Atlanta International Airport and is part of the Atlanta metropolitan area.
The city of Union is the county seat of Union County, South Carolina, United States.
 The population was 8,393 at the 2010 census.
 It is the principal city of the Union Micropolitan Statistical Area (population 28,961 according to 2010 Census), an (MSA) which includes all of Union County and which is further included in the greater Greenville-Spartanburg-Anderson, South Carolina Combined Statistical Area (population 1,266,995 according to the 2010 Census).
Robert Milton "Bob" Hartsfield (December 15, 1931 in Atlanta – January 25, 1999 in Roswell, Georgia), nicknamed Poochie, was a minor league baseball player, manager and scout.
 He was the brother of Roy Hartsfield.
Murrieta is a city in southwestern Riverside County, California, United States.
 The population of Murrieta was 103,466 at the 2010 census.
 Murrieta experienced a 133.7% population increase between 2000 and 2010, according to the most recent census, making Murrieta one of the fastest growing cities in the state.
 This population boom in 2010 surpassed the population of the historically larger and more commercial city of Temecula to the south for the first time since the incorporation of either city.
 Temecula and Murrieta together form the southwestern anchor of the Inland Empire region.
 The Murrieta-Temecula-Menifee Urban Area had a population of 441,546 at the 2010 Census.
 Largely residential in character, Murrieta is typically characterized as a commuter town, with many of its residents commuting to jobs in San Diego County, Orange County, Los Angeles County, Temecula, and Camp Pendleton.
College Park is a city in the U.S. state of Georgia, adjacent to the southern boundary of the city of Atlanta.
 As of the 2010 census, the population was 13,942.
 Hartsfield–Jackson Atlanta International Airport is partially located in the city's boundaries (including the domestic terminal, Concourse T, Concourse A, and about two-thirds of Concourse B), and the Georgia International Convention Center, owned and operated by the City of College Park, is within the city limits.
Milton is a city and suburb in Fulton County, Georgia, United States.
 Incorporated on December 1, 2006, it was created out of the entire unincorporated northernmost part of northern Fulton County.
 It is an affluent community, with an average household income within the ZIP code 30004 of $99,412.
 As of the 2010 census, Milton's population was 32,661, with an estimated population of 36,662 in 2014.
Huaihua () is a prefecture-level city in the south western Hunan, China.
 it covers 27,564 km2 and is bordered by Xiangxi to the northern west; Zhangjiajie, Changde to the north; Yiyang, Loudi and Shaoyang to the east; Guilin and Liuzhou of Guangxi to the south; Qiandongnan, Tongren of Guizhou to the southern west.
 It has 4,741,948 of population (2010 census), shares 7.22% of the province.
 According to 2010 Census, there are 2,909,574 Han Chinese, Han shares 61.4% of the population, 1,832,289 population of minorities, 38.6%; Dong, Miao, Tujia, Yao and Bai are major native minorities.
 Huaihua is the central region of Dong ethnic population, there lives 816,481 Dong people (2010 census), it shares 28.35 per centage of Chinese Dong ethnic group.
Roswell is a city in north Fulton County, Georgia, United States.
 At the 2010 census it had a population of 88,346, and in 2014 the estimated population was 94,089, making it Georgia's seventh largest city.
Milton is a town in Chittenden County, Vermont, United States.
 The population was 10,352 at the 2010 census.
 According to local legend, the town was named for the English poet John Milton, but the name most likely originated from William FitzWilliam, 4th Earl FitzWilliam, who held the title Viscount Milton.
Altoona is a city in Blair County, Pennsylvania, United States.
 It is the principal city of the Altoona Metropolitan Statistical Area (MSA).
 The population was 46,320 at the time of the 2010 Census, making it the eleventh most populous city in Pennsylvania.
 The Altoona MSA includes all of Blair County and was recorded as having a population of 127,089 at the 2010 Census, around 100,000 of whom live within a 5 mi radius of the Altoona city center according to U.S. Census ZIP Code population data.
 This includes the adjacent boroughs of Hollidaysburg and Duncansville, adjacent townships of Logan, Allegheny, Blair, Frankstown, Antis, and Tyrone, as well as nearby boroughs of Bellwood and Newry.