DeKalb and Noble counties both saw their unemployment rates drop by four-tenths of a percentage point while LaGrange and DeKalb saw their rates decline by three-tenths of a percentage point.
Around the state, Nassau's 4.2 percent ranked it the third-lowest rate.
DeKalb and Steuben counties were tied at No. 5 at 2.5 percent while Noble County was tied for 15th lowest at 2.7 percent. The lowest rates were in Teton and Niobrara counties at 2.5 percent, Goshen 2.9 percent and Albany at 3.0 percent.
Payroll employment growth remained significantly higher over the year, with businesses adding around 3,210 jobs (+4.1%).More news: Kate Middleton's Sister Pippa Is Pregnant
The number of employed residents fell by 22,400 to 1.4 million, the Labor Department numbers showed.
The national unemployment rate for last month was 4.1 percent. The two other sectors with the most job growth over the past decade were leisure/hospitality (24.8 percent) and manufacturing (18.8 percent), which now account for 8 percent and 6 percent of the Capital Region workforce, respectively.
In the Seattle area, including Bellevue and Everett, the civilian labor force and total employment increased by nearly the same amount in the 12 months through March.
Rates declined in all 88 counties in OH last month.More news: Paris Jackson slams family members
In Michigan City the rate dropped by more than half a point, to 4.7 percent from 5.3 percent in February (5.7 percent in March 2017). The sectors of private education and health services, information, and financial activities saw modest losses (for a total of 110 job losses).
IN is tied with Minnesota for the second-lowest unemployment rate in the Midwest, followed by OH at 4.4 percent. Local governments dropped 100 jobs over the previous 12 months.
The county's jobless rate last month was 5.2 percent, down 0.5 percent from February, according to figures released Tuesday by the Ohio Department of Job and Family Services.
"Discouraged workers" are not now looking for work for several reasons, including their belief that no job is available to them in their line or in their area.More news: Portland Trail Blazers: 5 goals for the 2018 offseason