Question: What was the 2011 population of the town having the highest proportion of the English surname Myerscough?

<P0-S0> Youth in Guatemala are the largest segment of the nation's population. <P0-S1>  Youth includes individuals between the ages of 15 and 24 Over half of the population is under 19 years old in 2011, the highest proportion of young people of any country in Latin America. <P0-S2>  The health, education, and work opportunities for young people differ by ethnicity ("ladino" or indigenous) and social class. <SEP> <P1-S0> Arizona, a state in the southwestern region of the United States of America, is known for its high population of Native Americans. <P1-S1>  Arizona has the third highest number (and the sixth highest percentage) of Native Americans of any state in the Union (See Demographics of Arizona). <P1-S2>  Out of the entire US population of 2.9 million Native Americans, roughly 286,680 live in Arizona, representing 10% of the country's total Native American population. <P1-S3>  Only California and Oklahoma have more Native Americans than Arizona by number. <P1-S4>  Arizona also has the highest proportion of land allocated to Native American reservations, at 28%. <P1-S5>  Arizona has five of the twelve largest Indian reservations in the United States, including the largest, the Navajo Nation, and the third-largest, the Tohono O'odham Nation. <P1-S6>  Also, Arizona has the largest number of Native American language speakers in the United States. <SEP> <P2-S0> Fleetwood is a town and civil parish within the Wyre district of Lancashire, England, lying at the northwest corner of the Fylde. <P2-S1>  It had a population of 25,939 people at the 2011 census. <P2-S2>  The site of the town has been continuously inhabited since the Middle Ages. <P2-S3>  Fleetwood acquired its modern character in the 1830s, when the principal landowner Peter Hesketh-Fleetwood, High Sheriff and MP, conceived an ambitious plan to re-develop the town to make it a busy seaport and railway spur. <P2-S4>  He commissioned the distinguished Victorian architect Decimus Burton to design a number of substantial civic buildings, including two lighthouses. <P2-S5>  Hesketh-Fleetwood's transport terminus schemes failed to materialise. <P2-S6>  The town expanded greatly in the first half of the 20th century with the growth of the UK fishing industry, and passenger ferries to the Isle of Man to become a deep-sea fishing port. <SEP> <P3-S0> Myerscough ( or or ) is an English surname, which is most common in Lancashire. <P3-S1>  The name originates from the hamlet of Myerscough, in the parish of Myerscough and Bilsborrow near Preston, which has been an important land holding by the Duchy of Lancaster since 1267. <P3-S2>  Although the name originates from a hamlet near Preston, the town with the highest proportions of Myerscough's is Fleetwood in Lancashire. <P3-S3>  The name is virtually unheard of in the midlands and the south of England. <P3-S4>  People with the name are used to it being pronounced or spelt incorrectly, mainly due to people being unfamiliar with the name and pronouncing it how they think it is pronounced or spelt. <P3-S5>  Historically the name had the more phonetic spelling 'Myerscoe'.