The number of undocumented immigrants grew faster in Utah than in the country as a whole in recent years, according to a new study by the Pew Hispanic Center.

The number of undocumented immigrants in Utah grew nearly 16 percent between 2005 and 2008, more than double the national growth rate of 7.2 percent, according to Pew Center estimates.

An estimated 4.1 percent of Utah residents, or 110,000, are undocumented immigrants, tying Utah with Minnesota, Michigan and Connecticut at 21st among states for total numbers. The proportion of Utah residents who are undocumented is just slightly above the national average of 4 percent.

Of the estimated 110,000 undocumented immigrants in Utah, 80,000 are working, comprising 5.8 percent of the labor force. The Pew research indicates 5.4 percent of the national labor force is undocumented.

Utah ranks as one of 10 states with above-average numbers of school-age children with at least one parent who is undocumented.

The national average is 6.6 percent, while in Utah, between 7.6 percent and 9.9 percent of children in kindergarten through 12th grade have at least one parent who is an undocumented immigrant, the Pew research shows.