What is the population of Rockingham County?

The population of Rockingham County, NH is 311,307.

Where is Rockingham County located?

Rockingham County, NH is located at latitude 42.9845400 and longitude -71.0889700. It is in United States.

What is the area of Rockingham County?

The area of Rockingham County, NH is 2056 km².

What is the elevation of Rockingham County?

Rockingham County, NH has an elevation of 66 meters (217 feet) above sea level.

What time zone is Rockingham County in?

Rockingham County, NH is in the America/New_York time zone.

How has the population of Rockingham County changed?

The population of Rockingham County, NH has increased from 295,223 (2010) to 311,307 (2020), a change of 5.4%.

Rockingham County, New Hampshire

Rockingham County: county in New Hampshire, United States.

About

Rockingham County is a county located in the U.S. state of New Hampshire. As of the 2010 census, the population was 295,223 and a population density of 144 people per km². After 10 years in 2020 county had an estimated population of 311,307 inhabitants. Its county seat is Exeter. The county was created 257 years ago in 1768.

Rockingham County locator map — Location of Rockingham County on New Hampshire map.

County Snapshot

Rockingham County at a glance

Rockingham County currently has 32 quality-checked populated place pages linked on MapSof, making it easier to jump from the county overview into local city pages.

Browse county places

Mapped populated places

These counts use a stricter populated-place filter so the main lists stay focused on real city and town pages.

New Hampshire counties

Open related pages

Largest city

Derry

Population 33,442

Quick Facts about Rockingham County

Population	311,307 (2020)
Country	United States of America
State	New Hampshire (United States)
Different from	Rockingham County, Rockingham County
Twitter username	rockinghamco
Area	2056 km²
Water as percent of area	12.6%
Land as percent of area	87.4%
Latitude & Longitude	42.9845,-71.0890
Named for	Charles Watson-Wentworth, 2nd Marquess of Rockingham
Altitude	154 feet / 47 meters
Capital	Exeter
Establishment	January 01, 1769
Time Zone	America/New_York
Local time	09:23:38 (23rd September 2026)
Density	151 Pop. per km² as of 2020
Population growth	5.45% (2010-2020)

Rockingham County Courthouse Brentwood NH image

Geography

Rockingham County is located at 42°59'4"N 71°5'20"W (42.9845400, -71.0889700). It has 5 neighbors: Hillsborough County, Essex County, York County, Merrimack County and Strafford County.

Rockingham County map

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The largest city of Rockingham County is Derry with a population of 33,442. Other cities include, Salem population 30,641, Londonderry population 26,646, Portsmouth population 21,557 and Hampton population 15,950. See all Rockingham County cities & populated places.

Rockingham County Populated Places (more)

Cities, towns, neighborhoods & other populated places in Rockingham County.

City Name	Population	Title
Derry	33,442	Town in New Hampshire, United States
Salem	30,641	Town in New Hampshire, United States
Londonderry	26,646	Town in Rockingham County, New Hampshire, United States of America
Portsmouth	21,557	City in Rockingham County, New Hampshire, United States
Hampton	15,950	Town in New Hampshire
Exeter	15,296	Town in Rockingham County, New Hampshire, United States
Windham	14,865	City in New Hampshire
Raymond	10,573	Town in New Hampshire
Seabrook	8,844	Town in New Hampshire, United States
Hampstead	8,612	Town in New Hampshire, United States
Plaistow	7,735	Town in New Hampshire
Stratham	7,579	Town in Rockingham County, New Hampshire
Atkinson	7,163	Town in New Hampshire, USA
Epping	7,070	Town in the U.
Sandown	6,551	Town in New Hampshire
Kingston	6,426	Town in New Hampshire, USA

Official website of Rockingham County

Official Website Twitter

Rockingham County has 5 neighbours.

Hillsborough County county in New Hampshire, United States.
Essex County county in Massachusetts, United States.
York County county in Maine, United States.
Merrimack County county in New Hampshire, United States.
Strafford County county in New Hampshire, United States.

Kingston
Nottingham
Auburn
Epping
Brentwood
Rye
Sandown
Danville
Kensington
Northwood
East Kingston
Hampstead
Portsmouth
Plaistow
Newfields
Exeter
Newton
Chester, New Hampshire
Hampton
Newington
Derry
Fremont
Hampton Falls
Salem
Deerfield
Londonderry
Windham
Seabrook
Stratham
Greenland
North Hampton
Atkinson
Newmarket
New Castle
South Hampton
Raymond
Candia

Demographics

The population of Rockingham County increased by 5.45% in 10 years.

Year	Population	% Change	Method
2010	295,223	-	census
2011	296,195	0.33%	estimation process
2012	298,157	0.66%	estimation process
2013	299,456	0.44%	estimation process
2014	301,361	0.64%	estimation process
2015	302,691	0.44%	estimation process
2016	304,377	0.56%	estimation process
2017	306,669	0.75%	estimation process
2018	308,287	0.53%	estimation process
2019	309,769	0.48%	estimation process
2020	311,307	0.5%	estimation process

Comitatul Rockingham, Comte de Rockingham, Comté de Rockingham, Condado de Rockingham, Condado han Rockingham, Contea di Rockingham, Hrabstwo Rockingham, Okrug Rokingkham, Quan Rockingham, Quận Rockingham, Rockingham, Rockingham Kun, Rockingham Kūn, Rockingham konderria, Rockingham megye, Rockinghami maakond, Rokingam, Rokingem, Rokinggem, luo jing an xian, rakinhama ka'unti, rokkingamu jun, shhrstan rakyngham nywhmpshayr, Округ Рокингхам, Рокингам, Рокингем, Рокінґгем, Ռոքինգհեմ շրջան, راکنگہیم کاؤنٹی, راکنگہیم کاؤنٹی، نیو ہیمپشائر, شهرستان راکینگهام، نیوهمپشایر, রকিংহাম কাউন্টি, ロッキンガム郡, 羅京安縣

People born in Rockingham County (7)

People born in Rockingham County, including actor, singer and dancer Dustin Farnum, politician William Plumer, Jr., politician William M. Oliver, .

More notable people

Stefanie Murphy (Greek basketball player) she was born in 05/04/1989
Pierse Long (Continental Army officer) he was born in 01/01/1739
Colonel Plug (American pirate on the Ohio River)
Sarah Bagley (American labor leader) she was born in 19/04/1806

Other places with the same name (2)

Rockingham County, North Carolina county in North Carolina, United States. with a population of 91,285 people.
Rockingham County, Virginia county in Virginia, United States. with a population of 82,346 people.

New Hampshire Other Counties (more counties)

County Name	Population	Title
Hillsborough County	418,735	The most populous county in the U.
Merrimack County	152,622	County in New Hampshire, United States
Strafford County	131,533	County in New Hampshire, United States
Manchester	112,546	The most populous city in Hillsborough County, New Hampshire.
City of Manchester	109,565	The most populous city in Hillsborough County, New Hampshire.
Grafton County	90,691	County in New Hampshire, United States
Nashua	89,167	The most populous city in Hillsborough County, New Hampshire.
Cheshire County	76,228	County in New Hampshire, United States
Belknap County	61,551	County in New Hampshire, United States
Carroll County	49,167	County in New Hampshire, United States
Concord	43,924	The capital of New Hampshire.
Sullivan County	43,267	County in New Hampshire, United States
East Concord	42,605	A census-designated place in Merrimack County, New Hampshire.
Derry	33,442	Town in New Hampshire, United States
Dover	32,443	County seat city in Strafford County, New Hampshire, United States
Rochester	31,719	City in Strafford County, New Hampshire, United States