Rockingham County, New Hampshire Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates · 2nd-largest in New Hampshire
The population of Rockingham County, New Hampshire is 317,163 as of the 2023 American Community Survey, making it the 2nd-largest county in New Hampshire. The median household income is $113,927, the median home value is $461,400, and the median age is 44.8.
The population of Rockingham County has grown 9.2% since 2010 (295,300 → 322,433), a +0.63% annualized rate.
317,163
Population
+0.63%
Annual growth
456
People / sq mi
$113,927
Median Income
$461,400
Median Home Value
Rockingham County covers 695 sq mi of land at 456.1 people per square mile.
About Rockingham County, NH
Rockingham County is distinguished by its share of foreign-born residents, 64.4% of the population. With 317,163 residents, Rockingham County is a county in New Hampshire. That makes it one of the ten largest counties in New Hampshire in the country, at #2 by population.
Income is a real outlier — the median household pulls in $113,927, putting Rockingham County near the top of US counties. Very few residents live in poverty — 3.1%, below the national 12.4%. Real estate commands a premium here — a median home value of $461,400, with typical rent around $1,619.
The population is unusually well-credentialed for US counties — 44.8% of adults have a four-year degree, above the national 35.0%. Working from home is common here: 17.2% of workers do so, above the national 14.0%, and the average commute runs about 29 minutes each way.
The large foreign-born share is a defining thread in Rockingham County, shaping language, household composition, and the labor force behind the economic figures above.
Rockingham County Population History (2010-2024)
The county of Rockingham County had a population of 295,300 in 2010 and 322,433 in 2024, a 9.2% growth over 14 years. The peak was 322,433 in 2024. Average annual growth rate: 0.63%.
322,433
Population (2024)
295,300
Population (2010)
322,433
Peak (2024)
0.63%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 295,300 |
| 2011 | 296,241 |
| 2012 | 298,250 |
| 2013 | 299,603 |
| 2014 | 301,596 |
| 2015 | 302,975 |
| 2016 | 304,748 |
| 2017 | 306,970 |
| 2018 | 308,377 |
| 2019 | 309,647 |
| 2020 | 314,664 |
| 2021 | 318,349 |
| 2022 | 319,298 |
| 2023 | 320,665 |
| 2024 | 322,433 |
Race & Ethnicity
| White | 91.4% |
| Black or African American | 0.9% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 0.7% |
| Two or More Races | 0.0% |
Age & Sex
44.8
Median Age
50.2%
Female
49.8%
Male
19.6%
Age 65+
Age Distribution
Children (under 15): 15.1% · Seniors (65+): 19.6%
Income & Poverty
| Median household income | $113,927+$18,299 vs state |
| Mean household income | $145,728 |
| Per-capita income | $59,710 |
| Poverty rate | 3.1%-1.3% vs state |
| Unemployment rate | 2.4% |
| Employment-to-population | 65.8% |
Top Industries by Employment
The largest employment sector in Rockingham County is professional & business services, accounting for 23.1% of workers.
How residents commute
0.6%
Drive alone
1.5%
Carpool
73.9%
Public transit
17.2%
Work from home
29.1 min
Avg commute
Housing
$461,400+$94,200 vs state
Median home value
$1,619
Median rent
78.6%
Homeownership rate
136,681
Total housing units
92.6%
Occupied
7.4%
Vacant
21.4%
Renter-occupied
Social & access
95.6%
With health insurance
96.8%
With broadband internet
64.4%
Foreign-born
7.9%
Veterans (18+)
11.3%
With a disability
93.7%
Speak language other than English at home
Education
96.1%
High School+
44.8%
Bachelor's+
Largest cities in New Hampshire
Other counties in New Hampshire
Part of New Hampshire
Metro areas in New Hampshire
County rankings
Frequently Asked Questions
Rockingham County, New Hampshire has a population of 317,163 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 2nd-largest county in New Hampshire. Population density is 456 people per square mile.
The population of Rockingham County has grown 9.2% since 2010 (295,300 → 322,433), a +0.63% annualized rate.
The median household income in Rockingham County, New Hampshire is $113,927, with mean (average) household income of $145,728 and per-capita income of $59,710. 3.1% of residents live below the federal poverty level.
In Rockingham County, the largest racial and ethnic groups are White (91.4%), Black or African American (0.9%), Hispanic or Latino (0.7%). Figures are from the US Census Bureau's 2023 ACS 5-year estimates and reflect self-reported responses.
The median age in Rockingham County, New Hampshire is 44.8 years. Residents are 50.2% female and 49.8% male.
The median home value in Rockingham County is $461,400 and median monthly rent is $1,619. 78.6% of occupied housing units are owner-occupied. The county has 136,681 total housing units, 7.4% of which are vacant.
The largest employment sector in Rockingham County, New Hampshire is professional, scientific, and management services, employing 23.1% of workers. The unemployment rate is 2.4%.
Manchester is among the largest cities associated with Rockingham County, New Hampshire, with a population of 115,415.
More from New Hampshire
Population 424,732
Population 155,018
Population 131,743
Population 91,759
Full rankings of New Hampshire counties
Statewide data for New Hampshire
Population, race, income, age, and trends across New Hampshire
Data from the American Community Survey (ACS) 5-Year estimates.
Source: U.S. Census Bureau ACS, 2026.