Question: According to the 2010 census, what was the population of the county seat of Toole County, Montana?

Context paragraphs:
Shelby, Montana: Shelby is a city in and the county seat of Toole County, Montana, United States.  The population was 3,376 at the 2010 census.

Union, South Carolina: 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).

Toole County, Montana: Toole County is a county located in the northern portion of the U.S. state of Montana.  As of the 2010 census, the population was 5,324.  Its county seat is Shelby.  The county was established in 1914 from parts of Hill County and Teton County and was named after Joseph Toole, the first and fourth governor of Montana.  Its northern boundary is the Canada–United States border south of Alberta.

Fergus County, Montana: Fergus County is a county in the U.S. state of Montana.  As of the 2010 census, the population was 11,586.  Its county seat is Lewistown.  The county was founded in 1885 and named for James Fergus, a Montana politician who was instrumental in creating the county (or, according to another source, John Fergus).

Choteau, Montana: Choteau is a city in and the county seat of Teton County, Montana, United States.  It lies along U.S. Routes 89 and 287 (the latter terminating at the former in this city) about 20 mi east of the Rocky Mountains, near Flathead National Forest, the Rocky Mountain Division of Lewis and Clark National Forest, and Glacier National Park.  The population was 1,684 at the 2010 census.  The Montana town is named for French fur-trapper and explorer Pierre Chouteau, Jr., who is also the namesake of Chouteau County, Montana (county seat: Fort Benton).

Kevin, Montana: Kevin is a town in Toole County, Montana, United States.  The population was 154 at the 2010 census.  The town was named after Thomas Kevin, superintendent of the Alberta Railway & Irrigation Company.  Locals pronounce Kevin with a long E.

Sunburst, Montana: Sunburst is a town in Toole County, Montana, United States.  The population was 332 at the 2010 census.

Morris County, New Jersey: Morris County is a county located in the U.S. state of New Jersey, about 25 mi west of New York City.  According to the 2010 United States Census, the population was 492,276, up from the 470,212 at the 2000 Census, As of the 2016 Census estimate, the county's population was 498,423, making it the state's 10th-most populous county, and marking a 1.2% increase from 2010.  The county is part of the New York Metropolitan Area, and its county seat is Morristown.  The most populous place was Parsippany-Troy Hills Township, with 53,238 residents at the time of the 2010 Census, while Rockaway Township covered 45.55 sqmi , the largest total area of any municipality.

Petroleum County, Montana: Petroleum County is a county located in the U.S. state of Montana.  As of the 2010 census, the population was 494, making it the least populous county in Montana and the seventh-least populous in the United States.  Its county seat is Winnett.  The Montana Legislature approved the formation of the county by separating it from Fergus County; Petroleum County was thus created on February 25, 1925, as the last of Montana's 56 counties.

Great Falls, Montana: Great Falls is a city in and the county seat of Cascade County, Montana, United States.  The 2015 census estimate put the population at 59,638.  The population was 58,505 at the 2010 census.  It is the principal city of the Great Falls, Montana Metropolitan Statistical Area, which encompasses all of Cascade County and has a population of 82,278.  Great Falls was the largest city in Montana from 1950 to 1970, when Billings surpassed it.  Great Falls remained the second largest city in Montana until 2000, when it was passed by Missoula.  Since then Great Falls has been the third largest city in the state.

Supporting paragraphs: Toole County, Montana Shelby, Montana
Answer: 3,376