Monmouth

There's more than one place called Monmouth:

United Kingdom

 * Monmouth (Wales) - the county town of Monmouthshire, South Wales
 * Monmouthshire - the historic county

United States of America

 * Monmouth (Illinois) - a town in Warren County, Illinois
 * Monmouth (Maine) - a town in Kennebec County, Kennebec and Moose River Valleys, Maine
 * Monmouth (Oregon) - a city in Polk County, Oregon
 * Monmouth County - in the Jersey Shore region of New Jersey