Question: In 1900, what was the population of the city in the same county as Allen?

Knowledge 1: Allen, Arizona
Allen, also known as Allen City is a ghost town in Pima County in southern Arizona. It was founded fifty miles southeast of Ajo, c. 1880. By 1886, the post office closed and the town has been abandoned since. [SEP] Knowledge 2: Tucson, Arizona
By 1900, 7,531 people lived in the city. The population increased gradually to 13,913 in 1910. At about this time, the U.S. Veterans Administration had begun construction on the present Veterans Hospital. Many veterans who had been gassed in World War I and were in need of respiratory therapy began coming to Tucson after the war, due to the clean dry air. Over the following years the city continued to grow, with the population increasing to 20,292 in 1920 and 36,818 in 1940. In 2006 the population of Pima County, in which Tucson is located, passed one million while the City of Tucson's population was 535,000. [SEP] Knowledge 3: Pima County Natural Resources, Parks and Recreation
Pima County Natural Resources, Parks and Recreation is the agency within Pima County, Arizona that manages the natural resources, parks, and recreation offerings within Pima County including Tucson, AZ.
Knowledge 1: Pima County Natural Resources, Parks and Recreation
Pima County Natural Resources, Parks and Recreation is the agency within Pima County, Arizona that manages the natural resources, parks, and recreation offerings within Pima County including Tucson, AZ. [SEP] Knowledge 2: Tucson, Arizona
By 1900, 7,531 people lived in the city. The population increased gradually to 13,913 in 1910. At about this time, the U.S. Veterans Administration had begun construction on the present Veterans Hospital. Many veterans who had been gassed in World War I and were in need of respiratory therapy began coming to Tucson after the war, due to the clean dry air. Over the following years the city continued to grow, with the population increasing to 20,292 in 1920 and 36,818 in 1940. In 2006 the population of Pima County, in which Tucson is located, passed one million while the City of Tucson's population was 535,000. [SEP] Knowledge 3: Allen, Arizona
Allen, also known as Allen City is a ghost town in Pima County in southern Arizona. It was founded fifty miles southeast of Ajo, c. 1880. By 1886, the post office closed and the town has been abandoned since.
Knowledge 1: Allen, Arizona
Allen, also known as Allen City is a ghost town in Pima County in southern Arizona. It was founded fifty miles southeast of Ajo, c. 1880. By 1886, the post office closed and the town has been abandoned since. [SEP] Knowledge 2: Tucson, Arizona
By 1900, 7,531 people lived in the city. The population increased gradually to 13,913 in 1910. At about this time, the U.S. Veterans Administration had begun construction on the present Veterans Hospital. Many veterans who had been gassed in World War I and were in need of respiratory therapy began coming to Tucson after the war, due to the clean dry air. Over the following years the city continued to grow, with the population increasing to 20,292 in 1920 and 36,818 in 1940. In 2006 the population of Pima County, in which Tucson is located, passed one million while the City of Tucson's population was 535,000. [SEP] Knowledge 3: Australia
Each state and major mainland territory has its own parliament — unicameral in the Northern Territory, the ACT and Queensland, and bicameral in the other states. The states are sovereign entities, although subject to certain powers of the Commonwealth as defined by the Constitution. The lower houses are known as the Legislative Assembly (the House of Assembly in South Australia and Tasmania); the upper houses are known as the Legislative Council. The head of the government in each state is the Premier and in each territory the Chief Minister. The Queen is represented in each state by a governor; and in the Northern Territory, the Administrator. In the Commonwealth, the Queen's representative is the Governor-General.The Commonwealth Parliament also directly administers the following external territories: Ashmore and Cartier Islands; Australian Antarctic Territory; Christmas Island; Cocos (Keeling) Islands; Coral Sea Islands; Heard Island and McDonald Islands; and Jervis Bay Territory, a naval base and sea port for the national capital in land that was formerly part of New South Wales. The external territory of Norfolk Island previously exercised considerable autonomy under the Norfolk Island Act 1979 through its own legislative assembly and an Administrator to represent the Queen. In 2015, the Commonwealth Parliament abolished self-government, integrating Norfolk Island into the Australian tax and welfare systems and replacing its legislative assembly with a council. Macquarie Island is administered by Tasmania, and Lord Howe Island by New South Wales.

Answer: 7,531