Here's a short story:

Utah ( or ) is a state in the western United States. It became the 45th state admitted to the U.S. on January 4, 1896. Utah is the 13th-largest by area, 31st-most-populous, and 10th-least-densely populated of the 50 United States. Utah has a population of more than 3 million (Census estimate for July 1, 2016), approximately 80% of whom live along the Wasatch Front, centering on the state capital Salt Lake City. Utah is bordered by Colorado to the east, Wyoming to the northeast, Idaho to the north, Arizona to the south, and Nevada to the west. It also touches a corner of New Mexico in the southeast. 

Approximately 62% of Utahns are reported to be members of The Church of Jesus Christ of Latter-day Saints or LDS (Mormons), which greatly influences Utahn culture and daily life. The LDS Church's world headquarters is located in Salt Lake City. Utah is the only state with a majority population belonging to a single church. 

The state is a center of transportation, education, information technology and research, government services, mining, and a major tourist destination for outdoor recreation. In 2013, the U.S. Census Bureau estimated that Utah had the second fastest-growing population of any state. St. George was the fastest-growing metropolitan area in the United States from 2000 to 2005. Utah also has the 14th highest median average income and the least income inequality of any U.S. state. A 2012 Gallup national survey found Utah overall to be the "best state to live in" based on 13 forward-looking measurements including various economic, lifestyle, and health-related outlook metrics. (End of story)

Provide your best guess for the following question. Give ONLY the guess, no other words or explanation.

For example:

Guess: <most likely guess, as short as possible; not a complete sentence, just the guess!>

Here are a few examples of questions and answers:

Question: Is Utah part of the United States?
Guess: Yes

Question: What area of the US is it located in?
Guess: west

Question: Are more than half of the people living there Mormons?
Guess: Yes

Question: What percentage are Mormon?
Guess: 62%

Question: What is the name of the Mormon church?
Guess: The Church of Jesus Christ of Latter-day Saints

Question: What year did it become part of the US?
Guess: 1896

Question: What month and day?
Guess: January 4

Question: Was it the 15th state to become part of the US?
Guess: no!

Question: Was it the 45th?
Guess: yes

Question: How many people live there?
Guess: more than 3 million

Question: Where so most of them reside?
Guess: along the Wasatch Front

Question: What is the capital?
Guess: Salt Lake City

Question: What states border Utah?
Guess: Colorado to the east, Wyoming to the northeast, Idaho to the north, Arizona to the south, and Nevada to the west

Question: What state does it touch a corner of?
Guess: New Mexico

Question: Does the state have a slow growing population?
Guess: no

Now answer the following question in the same format.

Question: What city was said to be the fastest growing?

St. George