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 a county in New Hampshire with a population of 317,163. It ranks #2 among counties in New Hampshire by population. The median age is 44.8, older than the national median. The population is 49.8% male and 50.2% female.
The median household income in Rockingham County is $113,927, above the US median of $74,580. 3.1% of residents live below the federal poverty level. Home values sit at a median of $461,400, with monthly rent averaging $1,619. The homeownership rate of 78.6% is higher than the national rate of 64.8%.
Educational attainment in Rockingham County reflects 44.8% of adults 25 and older holding a bachelor's degree or higher, above the national average of 34.3%. Roughly 17.2% of workers primarily work from home, similar to the national work-from-home rate of 14.2%. The average commute is 29.1 minutes each way.
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.
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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.