Rockingham County's estimated 2026 population is 326,153 with a growth rate of 0.64% in the past year according to the most recent United States census data. Rockingham County is the 2nd largest county in New Hampshire. The 2010 population was 295,300 and has seen a growth of 10.45% since that time.
Data after 2023 is projected based on recent change
Overall: 45 years
Female: 46.1 years
Male: 43.7 years
There are 260,119 adults, (65,026 of whom are seniors) in Rockingham County.
Female: 160,373 (50.3%)
Male: 158,709 (49.7%)
The racial composition of Rockingham County includes 90.56% White, and smaller percentages for Asian, other race, Black or African American, Native American, Native Hawaiian or Pacific Islander and multiracial populations.
Race | Population | Percentage (of total) |
|---|---|---|
| White | 288,970 | 90.56% |
| Two or more races | 17,252 | 5.41% |
| Asian | 6,262 | 1.96% |
| Other race | 3,578 | 1.12% |
| Black or African American | 2,437 | 0.76% |
| Native American | 469 | 0.15% |
| Native Hawaiian or Pacific Islander | 114 | 0.04% |
Rockingham County's average per capita income is $69,374. Household income levels show a median of $118,331. The poverty rate stands at 4.77%.
Name | Median | Mean |
|---|---|---|
| Married Families | $158,378 | $190,523 |
| Families | $143,734 | $174,833 |
| Households | $118,331 | $149,721 |
| Non Families | $64,866 | $90,144 |
Average Income
Median Household Income
Poverty Rate