Hillsborough County Flag

Hillsborough County

State:
New Hampshire
County Seat:

Hillsborough County's estimated 2025 population is 427,076 with a growth rate of -0.03% in the past year according to the most recent United States census data. Hillsborough County is the 1st largest county in New Hampshire. The 2010 population was 401,064 and has seen a growth of 6.49% since that time.

427,076
Total Population
487
Population Density (mi²)
1
Population Rank (State)
-139 -0.03%
Annual Population Growth

Hillsborough County Population

Hillsborough County Population

Data after 2023 is projected based on recent change

Demographics

The racial composition of Hillsborough County includes 83.3% White, 4.23% Asian, and smaller percentages for Black or African American, other race, Native American, Native Hawaiian or Pacific Islander and multiracial populations.

Population by Race

Race
Population
Percentage (of total)
White353,82283.3%
Two or more races32,5287.66%
Asian17,9664.23%
Black or African American10,9472.58%
Other race8,8782.09%
Native American5450.13%
Native Hawaiian or Pacific Islander460.01%

Hillsborough County Marital Status

OverallMalesFemales0%10%20%30%40%50%60%70%80%90%100%

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Hillsborough County's average per capita income is $60,336. Household income levels show a median of $100,436. The poverty rate stands at 6.51%.

Families: A family includes the owner or renter of the home along with everyone related to them - whether through birth, marriage, or adoption. This includes relatives like spouses, children, parents, siblings, grandparents, and any other family members.
Households: A household includes all the people who occupy a housing unit (such as a house or apartment) as their usual place of residence.
Non Families: A nonfamily household is either someone living alone or when the owner/renter lives with people they aren't related to, like roommates.
Name
Median
Mean
Married Families$140,704$169,039
Families$124,104$151,795
Households$100,436$128,567
Non Families$60,699$79,527

$60,336

Average Income

$100,436

Median Household Income

6.51%

Poverty Rate