Vintage Color Chrome Postcard. A 1950s business district view of Berlin, New Hampshire. Published by Ruby's Postcard Service. Divided back, unused. Condition: This is an original postcard, not a copy or reproduction. It is in NM condition. Comments: Berlin is a city along the Androscoggin River in Coos County in northern New Hampshire, United States. It is the northernmost city in New Hampshire. The population was 9,425 at the 2020 census, down from 10,051 at the 2010 census.