Question: What is the population of the town where The King's Castle is located?

Context paragraphs:
Parkes, New South Wales: Parkes is a town in New South Wales, Australia.  It is the main settlement in the local government area of Parkes Shire.  Parkes had an urban population of 15,450 as at 30 June 2016.

Silver King Camp: Silver King Camp is a ghost town located in the West Kootenay region of British Columbia.  The town is located on Toad Mountain near Nelson and was founded in the 1880s.  In 1887 silver ore was discovered on Toad Mountain, and a mine was created called the Silver King which was owned by the Hall family of Nelson.  A town grew around the workings of the mine.  By 1898 Silver King Camp had a population of 190.  The Silver King mine was the greatest shipper of silver ore to the Nelson Smelter for two decades.  A forest fire destroyed Silver King Camp and today little remains of the town.

Pirna: Pirna (Upper Sorbian: "Pěrno" ) is a town in the Free State of Saxony, Germany, capital of the administrative district Sächsische Schweiz-Osterzgebirge.  The town's population is over 37,000.  Pirna is located near Dresden and is an important district town as well as a "Große Kreisstadt".  It is also known for the gassing of about 15,000 disabled people in Sonnenstein Castle between June 1940 and August 1941, killings which ceased after pressure was exerted on the authorities by the local population.  Today, a small plaque at the base of Sonnenstein Castle and the Sonnenstein Memorial remembers the dead.

New Castle, New Hampshire: New Castle is a town in Rockingham County, New Hampshire, United States.  The population was 968 at the 2010 census.  It is the smallest and easternmost town in New Hampshire, and the only one located entirely on islands.  It is home to Fort Constitution Historic Site, Fort Stark Historic Site, and the New Castle Common, a 31 acre recreation area on the Atlantic Ocean.  New Castle is also home to a United States Coast Guard station, as well as the historic Wentworth by the Sea hotel.

Rouen Castle: The Rouen Castle is a historical castle of the town in Rouen, capital of the duchy of Normandy, now in France.  It was built by Philip II of France from 1204 to 1210 following his capture of the duchy from John, Duke of Normandy and King of England.  Located outside the medieval town to its north, in a dominant position, it played a military role in the Hundred Years' War and the Wars of Religion.  It was the main seat of power, administration and politics in the duchy of Normandy for nearly 400 years, symbolically replacing the ducal palace of Rouen in these roles - of the bailliage and vicomté of the king of France, of the English government of the area (1418–1449), of the échiquier de Normandie (which became the Parlement de Normandie).  It was here that Joan of Arc was imprisoned in December 1430 and tried from 21 February to 23 May 1431.  Vulnerable to artillery like other medieval fortresses, all but the keep (now known as the Tour Jeanne d'Arc) was dismantled in 1591.

The King's Castle: The King's Castle is Australia's only permanent collection of Elvis' personal memorabilia on loan to Parkes Shire Council, New South Wales, Australia by former Yellow Wiggle Greg Page.  The collection features clothing, jewellery and many other items that were owned by Elvis himself.  The collection (one of four museums) is housed at the Henry Parkes Centre, on the Newell Highway, Parkes and is open to the public seven (7) days a week.

Newbury Castle: Newbury Castle is the name of an English adulterine castle built by John Marshal during The Anarchy.  It is located west of the town of Newbury in the English county of Berkshire.  The Castle is mentioned in the "L'Histoire de Guillaume le Marechal" (History of William the Marshall) wherein it describes King Stephen as besieging the castle in 1152 and holding Marshal's son, William Marshal, as a hostage against Newbury's surrender.  When the elder Marshal refused to comply, Stephen threatened to have the young boy catapulted over the walls.  John, ("that child of hell and root of all evil" according to Henry of Huntingdon) responded defiantly, "I have the anvils and the hammer to forge still better sons."  King Stephen wasn't so heartless though—he relented and the boy survived.

Castle Rock, Colorado: Castle Rock is an affluent home rule municipality that is the county seat of Douglas County, Colorado, United States.  The most populous municipality of the county, the community's population was 48,231 at the 2010 United States Census, with an estimated population of 55,747 as of 2014.  It is named for the prominent, castle tower-shaped butte near the center of town.  Located midway between Denver and Colorado Springs, Castle Rock is part of the Denver Metropolitan Area and the Front Range Urban Corridor.

Château Gaillard: Château Gaillard ("Strong Castle") is a ruined medieval castle, located 90 m above the commune of Les Andelys overlooking the River Seine, in the Eure "département" of Normandy, France.  It is located some 95 km north-west of Paris and 40 km from Rouen.  Construction began in 1196 under the auspices of Richard the Lionheart, who was simultaneously King of England and feudal Duke of Normandy.  The castle was expensive to build, but the majority of the work was done in an unusually short time.  It took just two years, and at the same time the town of Petit Andely was constructed.  Château Gaillard has a complex and advanced design, and uses early principles of concentric fortification; it was also one of the earliest European castles to use machicolations.  The castle consists of three enclosures separated by dry moats, with a keep in the inner enclosure.

Castlerea: Castlerea ( ; Irish: "An Caisleán Riabhach" , meaning "brindled castle" ) is the second largest town in County Roscommon, Republic of Ireland.  It is located in the west of the county and, as of 2011, has a population of 3,055.  Roughly translated from Irish, Castlerea can mean Brindled Castle (Caisleán Riabhach) or King's Castle (Caisleán Rí).  The town is built on the banks of the River Suck and the River Francis, both of which are tributaries of the River Shannon.

Supporting paragraphs: The King's Castle Parkes, New South Wales
Answer: 15,450