Coos County, county in New Hampshire, United States. As of 2020 county had an estimated population of 31,174 inhabitants. The county was created 221 years ago in 1803. Its county seat is Lancaster.
There are 1 city/town in Coos County, NH. The largest city of Coos County is Errol with a population of 263.
Errol, Human settlement in Coös County, New Hampshire, United States of America
List of cities, towns, neighborhoods & other populated places in Coos County.
| City Name | Title | Population |
|---|---|---|
| Errol | Human settlement in Coös County, New Hampshire, United States of America | 263 |
