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The 2009 Hillsborough County, NH, population is 402,302. There are 459 people per square mile (population density).
The median age is 39. The US median is 37.6. 59.42% of people in Hillsborough County, NH, are married. 10.15% are divorced.
The average household size is 2.62 people. 27.21% of people are married, with children. 8.07% have children, but are single.
92.62% of people are white, 1.58% are black, 2.69% are asian, 0.27% are native american, and 3.07% claim 'Other'.
3.75% of the people in Hillsborough County, NH, claim hispanic ethnicity (meaning 96.25% are non-hispanic).
Hillsborough, NH People data
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