Rockingham County's estimated 2026 population is 325,969 with a growth rate of 0.55% 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 10.39% since that time.
Data after 2023 is projected based on recent change
The racial composition of Rockingham County includes 91.43% White, and smaller percentages for Asian, other race, Black or African American, Native American, Native Hawaiian or Pacific Islander and multiracial populations.
White (91.43%)
Two or more races (4.38%)
Asian (2.08%)
Other race (1.09%)
Black or African American (0.86%)
Native American (0.13%)
Native Hawaiian or Pacific Islander (0.04%)
Race | Population | Percentage (of total) |
|---|---|---|
| White | 289,993 | 91.43% |
| Two or more races | 13,882 | 4.38% |
| Asian | 6,586 | 2.08% |
| Other race | 3,445 | 1.09% |
| Black or African American | 2,715 | 0.86% |
| Native American | 421 | 0.13% |
| Native Hawaiian or Pacific Islander | 121 | 0.04% |
Married
Widowed
Divorced
Separated
Never Married
Rockingham County's average per capita income is $67,495. Household income levels show a median of $113,927. The poverty rate stands at 4.77%.
Name | Median | Mean |
|---|---|---|
| Married Families | $153,333 | $183,978 |
| Families | $138,240 | $168,778 |
| Households | $113,927 | $145,728 |
| Non Families | $65,122 | $89,201 |
Average Income
Median Household Income
Poverty Rate