The Youngstown-Warren-Boardman Metropolitan Statistical Area (msa) is comprised of Mahoning and Trumbull counties in Ohio, and Mercer County in Pennsylvania.(YWBmsa)
The Youngstown-Warren-East Liverpool Combined Statistical Area (csa) encompasses Mahoning, Trumbull and Columbiana Counties in Ohio and Mercer County in Pennsylvania. (YWEcsa)
Additional information about the region and northeast Ohio can be found in these links.
Ohio Economy at a glance
Occupational Wage Estimates
Union Membership in Ohio
Technology belt between Cleveland and Pittsburgh