 Continuing urbanization and suburbanization in other areas has also drawn people to cities of more opportunity.From a peak of population in 1910, the county had declined through 1990.In the early part of the 20th century, particularly from 1910 to 1930, and from 1940 to 1970, it was affected by the Great Migration of blacks out of the segregated society for jobs and opportunities in Midwest and later, West Coast cities.