Of the 39 states in which construction employment rose between July 2015 and July of this year, California added the most construction jobs, according to a report from the Associated General Contractors of America.

California tacked on 29,100 construction jobs in the 12 months through July, a 4 percent increase, according the AGC’s analysis of Labor Department data, released Friday.

At the end of July, there were 761,200 construction jobs in the state, according to the data.

California’s year-over-year change put it at No. 22 on the AGC’s list of states by percentage of growth.

Iowa topped the rankings with a 16.5-percent increase with the addition of 12,800 jobs, the report said.

Other states that also added construction jobs over the year include Florida, with 26,400 new jobs, 6.1 percent up; Colorado, with 16,100 new jobs, 10.9 percent more; and Georgia, with 12,400 new jobs, a 7.5-percent jump.

Washington, D.C., recorded no change.

"Depending on market segment and geography, many firms report they are having a hard time finding enough workers to keep pace with demand," said Stephen E. Sandherr, chief executive officer for the association. "While there is slack in key segments like infrastructure and parts of the country that are struggling economically, many of these declines likely have more to do with firms not being able to find workers than not being able to find work."

Kansas saw the biggest number of jobs lost, with 4,440 fewer on the rolls, a 7.3 percent dip. Other states that shed construction jobs include North Dakota, which lost 2,900, or 8.5 percent; Alabama, down 2,400 jobs, or 3 percent; and Kentucky, which dropped 2,300, also 3 percent.

In contrast, overall employment during that 12-month stretch went up in fewer states: 23 states and Washington, D.C., saw increases.