third coast
n.— «The Rocky Mountain region (Idaho, Montana, Utah, Colorado, Wyoming) is the fastest growing area in the country amongst persons ages 40-60—the classic baby boomers. Also, the “echo” generation, children of baby boomers, are the next largest population segment flocking to this area, referred to as the “third coast” by demographers.» —“Will History Repeat Itself? A Look to 2007″ by Tim Estin Aspen Daily News (Colorado) Dec. 27, 2006. (source: Double-Tongued Dictionary)