Seasonally unadjusted unemployment rates declined in all 17 of Michigan's regional labor markets in April.
Total employment was up in most areas, while labor force levels decreased in almost all regions.
State officials say the improved jobless rates were primarily the result of seasonal work force dropoffs. Fewer people tend to be job-hunting in early spring.
The biggest rate improvements were recorded in the northern Lower Peninsula.
Regional unemployment rates are not seasonally adjusted. But national and state unemployment rates are adjusted to remove seasonal influences such as production cycles, holidays, model changeovers in the auto industry and climate conditions.
Michigan's seasonally adjusted jobless rate in April was 6.9 percent.