Data / Rankings / Foreign-born population share / Counties in New Hampshire

Counties in New Hampshire by foreign-born share of the population

Hillsborough County had the highest foreign-born share of the population of 10 counties in 2023, at 10.4%. Sullivan County had the lowest, at 2.2%. The median was 3.5% and the figure for New Hampshire was 6.2%. Source: the U.S. Census Bureau.

Highest10.4Hillsborough County
Lowest2.2Sullivan County
Median3.510 counties
New Hampshire6.2History

All counties, 2023

CSVChart (SVG)

Hillsborough CountyHillsborough County: 10.4 %10.4Grafton CountyGrafton County: 6.2 %6.2Rockingham CountyRockingham County: 5.3 %5.3Merrimack CountyMerrimack County: 4.6 %4.6Strafford CountyStrafford County: 4 %4Belknap CountyBelknap County: 3 %3Coos CountyCoos County: 2.8 %2.8Cheshire CountyCheshire County: 2.7 %2.7Carroll CountyCarroll County: 2.6 %2.6Sullivan CountySullivan County: 2.2 %2.2
%. Source: Invokely calculation with data from U.S. Census Bureau. Retrieved 2026-10-09.

Full ranking

RankCounties2023 (%)Change on 2022
1Hillsborough County10.4+0.4 pts
2Grafton County6.2+0.4 pts
3Rockingham County5.3+0.3 pts
4Merrimack County4.6-0.2 pts
5Strafford County4-0 pts
6Belknap County3-0.2 pts
7Coos County2.8-0 pts
8Cheshire County2.7-0 pts
9Carroll County2.60 pts
10Sullivan County2.2-0.5 pts

Other periods

About this ranking

People who were not US citizens at birth, as a percentage of the total population. Includes naturalized citizens, lawful permanent residents, temporary migrants and unauthorized immigrants. United States: American Community Survey five-year estimate, where the period shown is the last year of the five-year span.

Based on place of birth, not nationality: a naturalized citizen counts as foreign born, and people born in Puerto Rico, the US island areas or abroad to American parents count as native. Not comparable with foreign_population_share, which counts foreign nationals in Spain and the EU. Calculated from counts in ACS table B05002, which are stored as inputs.

Every value in the ranking comes from the same publisher and the same period, so the counties are compared on one definition. Equal values share a rank.

How to cite

U.S. Census Bureau. American Community Survey 5-year estimates, table B05002: foreign-born population as a percentage of the total population, calculated with stored inputs. https://www2.census.gov/programs-surveys/acs/summary_file/2023/table-based-SF/data/5YRData/acsdt5y2023-b05002.dat. Retrieved 2026-10-09.

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Rank Counties in New Hampshire by foreign-born share of the population using official data, and cite the source.
rank_places {"indicator":"foreign_born_share","level":"province","within":"New Hampshire","limit":10}
GET https://invokely.ai/api/v1/rank?indicator=foreign_born_share&level=province&within=New%20Hampshire&limit=10

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Questions

Which county has the highest foreign-born share of the population?

Hillsborough County, with 10.4% in 2023, according to the U.S. Census Bureau.

Which county has the lowest foreign-born share of the population?

Sullivan County, with 2.2% in 2023.

Where does this ranking come from?

Every value comes from one source and one period, so the places are comparable: U.S. Census Bureau, American Community Survey 5-year estimates, table B05002: foreign-born population as a percentage of the total population, calculated with stored inputs. Retrieved 2026-10-09.

Foreign-born population share: other rankings

Counties in New Hampshire: more rankings