The United States has boosted attainment rates over the past decade, with the share of young adults with at least an associate degree increasing by 20 percent, resulting in an additional 5 million more individuals earning a college degree. But these gains in postsecondary attainment are not evenly distributed across the country. Of the 218.6 million adults in the United States--defined as those ages 25 or older for the purposes of this report--slightly less than 40 percent have earned an associate, bachelor's, or graduate degree. While about 35 percent of white adults hold a bachelor's degree or higher, only 18 percent of underrepresented adults do. And overall, just 8 percent of bachelor's degree-holders live in rural counties. This report lays out the current state of postsecondary attainment in the United States, exploring the overall landscape and delving into how attainment varies according to geography and race. It highlights three case studies to illustrate these disparities: Nye County, Nevada; Washington, D.C.; and Hialeah, Florida. Then, the report concludes by providing recommendations at the federal, state, and local levels.