The Pittsburgh region’s seasonally adjusted jobless rate rose slightly to 4.1% from January to February, while Butler County’s seasonally adjusted jobless rate increased as well, from 3.7% to 4% during that time.

Despite the rise, Butler County retained the lowest rate of the seven-county Pittsburgh Metropolitan Statistical Area, according to the most recent data released on Tuesday by the Pennsylvania Department of Labor & Industry.

Pennsylvania’s seasonally adjusted rate rose 0.1% in February to 4.4%, while the United States rate rose slightly as well to 3.6%.

Butler County’s seasonally adjusted labor force went almost unchanged from January to February as it lost 100 workers, rounding out at 98,400.

Allegheny, Armstrong, Beaver, Fayette, Washington and Westmoreland are among the other counties in the Pittsburgh region.

All counties saw an increase to their jobless rate due to small losses within their labor force, except for Allegheny County which stayed the same at 630,200 workers.