"It's another imprint of the Mormon culture region" and the importance that Mormons put on having children and families, she said. Utah has the lowest median age of any state because of all the children.
Perlich added that a mini-baby boom of women born in the 1980s hit their peak child-bearing years in the past decade, which may have contributed to Utah's high numbers.
Several of the few other states with fast growth among non-Latino whites border Utah and may also be influenced by Mormon culture. The states behind Utah were Idaho, up 15.5 percent; Arizona, 12.9 percent; and Nevada, 12.2 percent.
The new report said that only eight states had growth of 10 percent or more during the decade among non-Latino whites. Fifteen states actually saw that population decline.
The census showed that 80.4 percent of Utah reported being non-Latino whites. However, Perlich said about half of all Latinos also report themselves as whites. When those numbers are added in, Utah is 88.5 percent white, the report said.
Counting Latinos who also reported themselves as white, Utah's overall growth for whites in the past decade was 20.3 percent and second in the nation to Nevada among that expanded group.
Among Utah Latinos who also reported themselves as whites, population grew by 64 percent in the past decade.
The census said Utah's non-Latino white population was 2.22 million. When Latinos who reported themselves as white are added in, the overall white population was 2.45 million.
Nationally, 75 percent of the population was white.