Hillsborough County, NH

Demographics of Hillsborough County

Predominantly WhiteSimpson's Diversity Index: 34

Population424,732

Foreign Born4.5%

Population Density485people per mi²

Median Age41.0 yrs

Avg. Household Size2.48

Demographics Trajectory

StableSince 2010, this county has held a relatively stable population and racial composition.

Current Race / Ethnicity Breakdown

Population Trends of Hillsborough County

Overall Affluence Grade

B-

Good

An upper-middle-class area. Household wealth, education levels, and homeownership run ahead of national benchmarks.

Median HHIMedian Household Income

$100k+5.6%

34% above US avg

Est. Avg Net Worth

$778k

19% above US avg

College Educated

40.6%

16% above US avg

WFHWork From Home

16.1%

13% above US avg

HomeownershipHomeownership Rate

67.5%

3% above US avg

Median HomeMedian Home Value

$386k

37% above US avg

* Values derived from national, state, county, city and local statistics and may differ in a specific area. Last updated: 2026-05-15T01:37:07.000Z

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