Which area? There are over 14 million Mormons (members of the Church of Jesus Christ of Latter-day Saints) scattered around the world.
1862
The early Mormon Pioneers were mostly disliked in the Midwest just because of their numbers. There were so many of them that the politics and culture in their area were significantly influenced by them. This angered people who lived there before the Mormons arrived, as they felt the Mormons were 'taking over' their community.
Utah didn't exist when the Mormons arrived. The land was actually part of Mexico. They made their own state called "Deseret" a couple years after arriving, which looked like a blob and covered what is now California, Nevada, Utah, Arizona, Colorado, New Mexico, Wyoming, Idaho, and Oregon. (you can see a map at the "Related Link" below. 5 years after the Mormons arrived in the area, the United States government had obtained the land due to the Mexican War, and rejected the proposed state of Deseret, making the Territory of Utah in 1851. Utah Territory was smaller than Deseret, but larger than the current state of Utah. The current boundaries were set in 1868, 21 years after the Mormons arrived in the area.
The first Mormons arrived to settle in the Great Salt Lake on July 24, 1847.
The majority of Mormons moved to Utah in 1847 after being kicked out of Ohio, Missouri, and Illinois.
The Mormons moved to the west because they were trying to leave the United States. They had been kicked out of Ohio, Missouri, and Illinois, and thought they would try their luck in what was then Mexico. Also, Joseph Smith had prophesied a few years before his death that the Church would eventually move to the Rocky Mountains. Soon after the Mormons arrived there, the United States took over the area.
The first permanent white settlement in Oregon was at Fort Astoria in 1811. The Mormons arrived in Utah in 1847, 36 years later.
The area settled or founded by Mormons covered all of present day Utah with parts of Idaho, Colorado, Arizona, Nevada, and California. The Mormons proposed that this area be called Deseret Territory.
The Mormon Pioneers officially arrived in the Salt Lake Valley on July 24, 1849.
They actually did the Mormons impacted the place they settled by starting a religious church.
Yes! The first missionaries for the Church of Jesus Christ of Latter-day Saints (the "Mormon" church) in England arrived in 1837. Within only a week there was a congregation of about 60 baptized Mormons. There have always been Mormons in England since that time, and today there are almost 190,000 Mormons in England.
The area was technically part of Mexico, but it's only inhabitants were Native Americans, mostly of the Ute, Paiute, and Navajo tribes. The Native Americans and new white Mormon settlers tended to get along quite well.