Question: Which county is Jollyville, Texas located in that had a population of 1,024,266 as of the 2010 census?

Passages:
Odessa is a city in and the county seat of Ector County, Texas, United States.  It is located primarily in Ector County, although a small portion of the city extends into Midland County.  Odessa's population was 118,918 at the 2010 census making it the 29th-most populous city in Texas; estimates as of July 2015 indicate a population of 159,436 in the city.  It is the principal city of the Odessa Metropolitan Statistical Area, which includes all of Ector County.  The metropolitan area is also a component of the larger Midland–Odessa combined statistical area, which had a 2010 census population of 278,801; a recent report from the United States Census Bureau estimates that the combined population as of July 2015 is 320,513.  In 2014, "Forbes" magazine ranked Odessa as the third fastest-growing small city in the United States. Webster is a city in the U.S. state of Texas located in Harris County, within the Houston–Sugar Land–Baytown metropolitan area.  The population was 10,400 at the 2010 census. Motley County is a county located in the U.S. state of Texas.  As of the 2010 census, its population was 1,210, making it the tenth-least populous county in Texas.  Its county seat is Matador.  The county was created in 1876 and organized in 1891.  It is named for Junius William Mottley, a signer of the Texas Declaration of Independence.  Mottley's name is spelled incorrectly because the bill establishing the county misspelled his name.  Motley County is one of thirty prohibition, or entirely dry, counties in the state of Texas. Texarkana is a city in Bowie County, Texas, United States, located in the Ark-La-Tex region.  It is a twin city with neighboring Texarkana, Arkansas.  The population of the Texas city was 37,280 at the 2015 census estimate.  The city and its Arkansas counterpart form the core of the Texarkana Metropolitan Statistical Area, encompassing all of Bowie County, Texas, and Miller County, Arkansas.  The two cities had a combined population of 66,330 at the 2010 census, and the metropolitan area had a total population of 136,027. Aquilla ( ) is a city located in Hill County in Central Texas located on Farm Road 933 twelve miles southwest of Hillsboro in southwestern Hill County.  The population was 109 at the 2010 census. Harris County is a county located in the U.S. state of Texas.  As of the 2010 census, the population was 4,092,459, making it the most populous county in Texas and the third-most populous county in the United States.  Its county seat is Houston, the largest city in Texas and fourth-largest city in the United States.  The county was founded in 1836 and organized in 1837.  It is named for John Richardson Harris, an early settler of the area.  By the July 2016 Census Bureau estimate Harris County's population had grown to 4,589,928. Jollyville is a census-designated place (CDP) in Travis and Williamson counties in Texas.  It is a neighborhood in north Austin.  The population was 16,151 at the 2010 census. Sterling County is a county located on the Edwards Plateau in the U.S. state of Texas.  As of the 2010 census, its population was 1,143, making it the ninth-least populous county in Texas.  Its county seat is Sterling City.  The county is named for W. S. Sterling, an early settler in the area.  Sterling County is one of 30 prohibition, or entirely dry, counties in the state of Texas. <ref name="Wet/Dry Status of Texas Counties November 2010"> </ref> Travis County is a county located in south central Texas.  As of the 2010 census, the population was 1,024,266; the estimated population in 2014 was 1,151,145.  It is the fifth-most populous county in Texas.  Its county seat is Austin, the capital of Texas.  The county was established in 1840 and is named in honor of William Barret Travis, the commander of the Republic of Texas forces at the Battle of the Alamo. Hurst is a city in the U.S. state of Texas located in the densely populated portion of northeastern Tarrant County and is part of the Dallas–Fort Worth metropolitan area.  It is considered a Dallas and Fort Worth suburb and is part of the Mid-Cities region.  It is 13 miles from the Dallas/Fort Worth International Airport.  As of the 2010 census, it had a population of 37,337.

Supporting sentences:
Jollyville is a census-designated place (CDP) in Travis and Williamson counties in Texas. Travis County is a county located in south central Texas.  As of the 2010 census, the population was 1,024,266; the estimated population in 2014 was 1,151,145.