Unemployment rates dropped while employment ranks rose slightly in April across southwestern Connecticut, according to statistics released Friday by the state Department of Labor.

Greenwich recorded a 3.3 percent unadjusted unemployment rate, the lowest among Fairfield County’s five largest municipalities. Danbury followed with a 3.9 percent rate, while Norwalk and Stamford both recorded rates of 4 percent. Bridgeport posted the highest rate in the southwestern corner, at 7.1 percent. In comparison, the unadjusted statewide unemployment level totals 4.7 percent.

The southwestern corner of the state has benefited from growth in key industries such as financial services and aerospace, according to state labor officials. Its performance contrasts with a statewide loss of 1,500 jobs last month.

“The cities and towns in Fairfield County did do well this month, while not all places in Connecticut did so,” said Andy Condon, director of the state Labor Department’s Office of Research. “The industries down there that drive the growth have recovered.”

In the past month, the jobless rates respectively decreased by 0.7 percentage points in Bridgeport, Danbury and Norwalk and 0.4 points in Greenwich and Stamford.

Only those who are employed or not working, but actively looking for work, are counted in the unemployment rate.

Employment totals increased by 556 in Bridgeport, 540 in Stamford, 395 in Norwalk, 339 in Danbury and 225 in Greenwich.

“We’re growing, but it’s slow growth,” said Joe McGee, vice president of public policy for The Business Council of Fairfield County.

The state’s seasonally adjusted unemployment rate increased in the past month from 4.8 percent to 4.9 percent. The seasonal national unemployment rate now runs at 4.4 percent.

pschott@scni.com; 203-964-2236; twitter: @paulschott