A disparaging term for people from Oklahoma originating with the 1930s Dust Bowl that drove out many poor Oklahomans to other states. The term has a connotation of "
white trash", rural-living, and poor.
It was the middle of the
depression and swarms of impoverished farmers coming to already impoverished areas were not a welcome experience. "Okies" were persecuted, to the extent white citizens in America could be, compelled to live in small communities on the outskirts of towns, including in the Central Valley of California where they were referred to as "Okievilles".
UD's
definition of Okieville is lacking that particular context, the people weren't merely "white" they were specifically from Oklahoma and the Dust Bowl region.