The Allentown School District is a large, urban public school district located in Lehigh County, Pennsylvania, in the United States.
 The District is one of the 500 public school districts of Pennsylvania.
 Serving most of the city of Allentown, it is the fourth largest school district in Pennsylvania, with 17,962 students, with 15.7% White, 17.4% Black, 64.4% Hispanic, 1.4% Asian, 0.17% Native American.
 The School District of the City of Allentown encompasses approximately 17 sqmi .
 According to 2010 federal census data, the Allentown School District serves a resident population of 118,032.
 Per the US Census Bureau data, it served a resident population of 106,630 in 2000.
 In 2009, the per capita income was $16,282, while the median family income was $37,356.
 In the Commonwealth, the median family income was $49,501 and the United States median family income was $49,445, in 2010.
 By 2013, the median household income in the United States rose to $52,100.
The Burrell School District is a small, rural, public school district located in northern Westmoreland County, Pennsylvania.
 The District is 18 mi northeast of Pittsburgh.
 The Burrell School District serves the City of Lower Burrell and Upper Burrell Township.
 The District covers 27 sqmi .
 According to 2000 federal census data, Burrell School District serves a resident population of 14,848 people.
 By 2010, the District's population declined to 14,081 people.
 The educational attainment levels for the Burrell School District population (25 years old and over) were 93.1% high school graduates and 23% college graduates.
 The District is one of the 500 public school districts of Pennsylvania.
Austin ( , ) is the capital of the U.S. state of Texas and the seat of Travis County, with portions extending into Hays and Williamson counties.
 It is the 11th-most populous city in the United States and the 4th most populous city in Texas.
 It is the fastest growing large city in the United States and the second most populous state capital in the U.S after Phoenix, Arizona.
 As of the U.S. Census Bureau's July 1, 2016 estimate, Austin has a population of 947,890.
 Located in Central Texas in the foothills of Texas Hill Country, the city is home to numerous lakes, rivers, and waterways including Lady Bird Lake, Barton Springs, McKinney Falls, the Colorado River, Lake Travis, and Lake Walter E. Long.
 It is the cultural and economic center of the Austin–Round Rock metropolitan area, which had an estimated population of 2,056,405 as of July 1, 2016.
 It is the most populous state capital in the U.S that isn't the most populous city in a state.
The City of Loveland is the Home Rule Municipality that is the second most populous municipality in Larimer County, Colorado, United States.
 Loveland is situated 46 mi north of the Colorado State Capitol in Denver.
 Loveland is the 14th most populous city in Colorado.
 The United States Census Bureau estimated that in 2014 the population of the city was 72,651.
 The city forms part of the Fort Collins-Loveland Metropolitan Statistical Area and the Front Range Urban Corridor.
 The city's public schools are part of the Thompson R2-J School District.
The Belle Vernon Area School District is a midsized, suburban, public school district located approximately 25 mi southeast of Pittsburgh in rural Westmoreland County and Fayette County.
 The present school district was formed by a merger of the previous Belmar (having itself been the result of a merge between the Belle Vernon and Marion school districts) and Rostraver school districts in 1965.
 The district serves five political subdivisions located in 2 counties: Washington Township, Fayette City, North Belle Vernon, Belle Vernon, and Rostraver Township.
 Belle Vernon Area School District area is 42.2 sqmi .
 Belle Vernon Area School District in southwestern Pennsylvania lies midway between the cities of Pittsburgh on the north, Uniontown on the south, Washington to the west, and Greensburg to the east.
 Belle Vernon Area School District had a population as of 2000 of 20,127 residents.
 By 2010, the District's population declined to 18,912 people.
 The educational attainment levels for the School District population (25 years old and over) were 91% high school graduates and 21.6% college graduates.
 The District is one of the 500 public school districts of Pennsylvania.
Ridgeview Classical Schools, or Ridgeview, is a free public K-12 charter school located at 1800 South Lemay, Fort Collins, Colorado, Larimer County, United States.
 Ridgeview is chartered through the Poudre School District and serves approximately 800 students, as of 2014.
 The school is accountable to its charter, the local school district, and the state of Colorado.
Gurnee School District 56 is a PK-8 school district located in the northern Lake County village of the school district's namesake: Gurnee, Illinois.
 Gurnee School District 56 is composed of four schools; three schools run in succession to the other, while the other services all nine grades.
 Education in this school district often begins in Spaulding Elementary School, which serves the first and second grades; it also has a prekindergarten program.
 The principal is Dr. Ellen Mauer and the assistant principal is Dr. Cheryl Caesar.
 Spaulding feeds into Prairie Trail School, which educates third, fourth, and fifth graders.
 Kevin Simmons is the school's principal.Sheryl Gray is the assistant principal at Prairie Trail.
 The last section that this branch of the district's education can provide is to sixth, seventh, and eighth graders at Viking Middle School, whose principal is Patrick Jones.
 Viking is renowned for its wonderful drama and arts programs, along with its beautiful architecture.
 Viking Middle feeds into Warren Township High School in Gurnee, Illinois.
 The current Viking School was completed in 1998 after a flood rendered the old building unusable.
Community Consolidated School District 46 is a PK-8 school district located in the northern reaches of Lake County, Illinois; almost half of its schools are based in the village of Grayslake.
 The consolidated district is composed of seven schools: those seven schools can further be divided into two branches.
 The first branch is progressive, with students moving from school to school, and that list of progression is listed here; Meadowview School serves kindergarten through fourth grade.
 The principal of the school is Laura Morgan, and the school is located in Grayslake.
 There are three other elementary schools in the district, and they are named Avon Center School, Prairieview School, and Woodview School; these schools are all facilities in which those in kindergarten through fourth grade.
 Respectively, Avon Center is located in Round Lake Beach, Prairieview is located in Hainesville, and Woodview is located in Grayslake; Lynn Barkley is the principal of Avon Center, Dr. Amanda Schoenberg is the principal of Prairieview, and Jeff Knapp is principal at Woodview.
 All elementary schools feed into Frederick Intermediate School, which serves the early junior high grades five and six and is directed by principal Eric Detweiler; All graduates of Frederick Intermediate, in turn, attend Grayslake Middle School, which educates the seventh and eighth grade under the direction of principal Marcus Smith.
 The second branch is composed of one grade school, or a school that serves all grades within the same facility.
 This facility is called Park Campus and it is governed by principal Matt Melamed.
 Park Campus and Grayslake Middle School feed into Grayslake Community High School District 127, and into one of its two high schools: Grayslake North High School, or Grayslake Central High School.
Fort Collins is the Home Rule Municipality that is the county seat and the most populous municipality of Larimer County, Colorado, United States.
 Situated on the Cache La Poudre River along the Colorado Front Range, Fort Collins is located 65 miles (105 km) north of the Colorado State Capitol in Denver.
 With a 2016 estimated population of 161,000, it is the fourth most populous city in Colorado after Denver, Colorado Springs, and Aurora.
 Fort Collins is a midsize college city, home to Colorado State University.
Steel Valley School District is a small, suburban public school district in the state of Pennsylvania.
 It is located to the southeast of the City of Pittsburgh.
 It serves the boroughs of Homestead, Munhall, and West Homestead, former mill towns.
 Steel Valley School District encompasses approximately 4 square miles.
 According to a 2005 local census data, it served a resident population of 18,340.
 In 2009, the district's residents per capita income was $16,902, while median family income was $40,295.
 Per school district officials, in school year 2007-08 the Steel Valley School District provided basic educational services to 1,892 pupils through the employment of 170 teachers, 71 full-time and part-time support personnel, and 15 administrators.
 Steel Valley School District received more than $11.8 million in state funding in school year 2007-08.

Question: What school district is the fourth most populous city in Colorado located in?
Answer: Poudre School District