History and Facts of New Hampshire Counties
List of New Hamshire Counties
New Hamshire is divided into 10 counties.
|County||Created||Created From||Named For||County Seat||Notes|
|Belknap County||22 Dec 1840||Strafford County||In honor of Jeremy Belknap (1744-1798), an early New Hampshire historian||Prattville|
|Carroll County||22 Dec 1840||Strafford County||In honor of Charles Carroll of Carrollton (1737-1832), who had died eight years prior and was the last surviving signer of the Declaration of Independence||Bay Minette|
|Cheshire County||19 Mar 1771||One of the five original counties identified for New Hampshire in 1769||English county of Cheshire||Clayton|
|Coos County||24 Dec 1803||Grafton County||"Coös" derives from the Algonquian Indian term meaning "crooked", the Indian name of the Connecticut River, which rises in the northernmost end of the county||Centreville|
|Grafton County||19 Mar 1771||One of the five original counties identified for New Hampshire in 1769||In honor of Augustus Henry Fitzroy, 3rd Duke of Grafton (1735-1811), who had been a supporter of American causes in Parliament and was serving as Prime Minister of Great Britain (1768-1770) at the time||Oneonta|
|Hillsborough County||19 Mar 1771||One of the five original counties identified for New Hampshire in 1769||In honor of Wills Hill, 1st Marquess of Downshire (1718-1793); known in America as the Earl of Hillsborough, he served as the first Secretary of State for the Colonies||Union Springs||Organized at Amherst on March 19, 1771. Over several years ending in 1869, county administrative functions were moved from Amherst to the current seats of Manchester and Nashua.|
|Merrimack County||24 May 2019||Rockingham and Hillsborough Counties||Merrimack River||Greenville|
|Rockingham County||19 Mar 1771||One of the five original counties identified for New Hampshire in 1769||In honor of Charles Watson-Wentworth, 2nd Marquess of Rockingham (1730-1782), a two-time Prime Minister of Great Britain (1765-1766, 1782)||Anniston|
|Strafford County||19 Mar 1771||One of the five original counties identified for New Hampshire in 1769||In honor of William Wentworth, 2nd Earl of Strafford (1626-1695), an English noble who owned colonial lands||LaFayette|
|Sullivan County||05 Jul 1827||Cheshire County||In honor of John Sullivan (1740-1795); the third and fifth governor of New Hampshire (1786-1788 and 1789-1790)||Centre|
List of Old Former / Extinct New Hamshire Counties
New Hamshire has counties that no longer are in existence. A lot of these counties were established and disbanded within the 19th century; county borders have modified very little since 1900 in the vast most of states.
The below New Hamshire counties no longer exist:
?? County, New Hamshire
- Norfolk County, Massachusetts Colony (1643–1679) – became Essex County, Massachusetts and the entire state of New Hampshire.
Map of New Hamshire County Boundary Changes from 1764 to 1874
This Interactive Map of New Hamshire Counties show the historical boundaries, names, organization, and attachments of every county, extinct county and unsuccessful county proposal from the creation of New Hamshire from 1764-1874.
Fun Facts about New Hamshire Counties
County Name Facts
The County names:
- 0 of them named for Native American words or people,
Counties by Year
Facts for County Size
- ? County (000 sq mi) is the largest county in New Hamshire.
- ? County (000 sq mi) is the smallest county in New Hamshire.
Facts for County Population (2017 Est.)
- ? County (000) is the most populated county in New Hamshire.
- ? County (000) is the least populated county in New Hamshire.
Facts for New Hamshire Counties and Cities
New Hamshire’s 10 largest cities (2010) are: