Ken Johnson For Coos: A Surprising Mix of Births, Deaths and Newcomers By Chris Jensen • Mar 20, 2012 Chris Jensen for NHPR There’s a public perception that Coos County’s economic challenges mean a significant population loss over the last decade. But a new study shows that’s not quite right. NHPR’s Chris Jensen reports. Here’s a surprise for Coos County, courtesy of The Carsey Institute at the University of New Hampshire. It has just finished a demographic study of the Northern Forest.