Labor force participation and unemployment rates of persons living in the 25 largest cities and their suburbs, 1997 annual averages Characteristic Labor force Unemployment participation rates rates Central Central cities Suburbs cities Suburbs Total, 16 years and over 64.6 69.9 7.3 4.0 White 66.2 69.8 5.5 3.7 Black 60.2 73.3 12.5 7.6 Hispanic origin 64.3 71.3 8.1 6.1 Less than a high school diploma 44.0 47.3 14.7 9.8 High school graduates, no college 64.0 65.8 8.0 4.3 College graduates 81.7 81.5 3.1 2.0