Newmarket is a CDP located in Rockingham County, New Hampshire. Newmarket has a 2026 population of 5,830. Newmarket is currently growing at a rate of 0.57% annually and its population has decreased by 0% since the most recent census, which recorded a population of 0 in 2020.
The median household income in Newmarket is $87,196 with a poverty rate of 6.91%. The median age in Newmarket is 38.3 years: 36.8 years for males, and 39.6 years for females. For every 100 females there are 85.0 males.
Data after 2023 is projected based on recent change
Overall: 38.3 years
Female: 39.6 years
Male: 36.8 years
There are 4,967 adults, (756 of whom are seniors) in Newmarket.
Female: 3,070 (54.1%)
Male: 2,609 (45.9%)
The racial composition of Newmarket includes 89.52% White, and smaller percentages for Asian, Black or African American, other race and multiracial populations.
| Race | Population ↓ | Percentage (of total) |
|---|---|---|
| White | 5,084 | 89.52% |
| Two or more races | 437 | 7.7% |
| Asian | 106 | 1.87% |
| Black or African American | 50 | 0.88% |
| Other race | 2 | 0.04% |
Newmarket 's average per capita income is $55,089. Household income levels show a median of $87,196. The poverty rate stands at 6.91%.
| Name | Median ↓ | Mean |
|---|---|---|
| Married Families | $134,872 | - |
| Families | $117,467 | $128,689 |
| Households | $87,196 | $103,152 |
| Non Families | $68,565 | $79,264 |
Average Income
Median Household Income
Poverty Rate