The following is a quote from Wikipedia:
"The metropolitan areas with the largest Liberian immigrant populations are New York and Washington, D.C.; other cities with significant numbers of Liberians include Atlanta, Boston, Chicago, Detroit, Houston and Fort Worth (Texas), Hartford (Connecticut), Los Angelesand Oakland (California), Miami, Minneapolis and Philadelphia. So, as states such as Rhode Island and New Jersey."
Places not mentioned above should be safer. Please read the whole Wiki entry and familiarize yourself with it. It may save your life.