Carroll County Demographics

A map of Carroll County's Population by Race

Carroll County, New Hampshire has an estimated population of 51,804, an increase from the 50,107 recorded in the 2020 Census. The population is 94.0% White, 2.4% Multiracial, 1.8% Hispanic, 0.8% Asian, 0.6% Black, and 0.4% Native American/Other. This demographic dot map shows the population of Carroll County, with one dot drawn for each person counted by the Census, color-coded by race.

Carroll is about as racially diverse as it was in the 2020 Census. It is considerably less diverse than New Hampshire overall. Demographers use a diversity index to measure the probability that two randomly selected individuals belong to different racial or ethnic groups. In Carroll County, that probability was 12.1% in 2020 and 11.6% in the most recent ACS estimates.

Carroll County is ranked the 8th most populous county in New Hampshire, out of 10 counties. Carroll County was ranked the 8th most populous county in the 2020 Census.

Carroll County's White Population

48,671 residents of Carroll County, or 94.0% of the population, identify as White. The share of White residents in Carroll County is higher than in New Hampshire overall, where 86.9% of the population is White. Carroll County ranks 1st statewide in terms of White residents as a share of the population, out of 10 counties.

Since the 2020 Census, Carroll County's White population has grown by an estimated 3.7%. White residents' share of Carroll County's population has remained roughly unchanged at 94.0%.

Carroll County is more White than neighboring Belknap County (92.7% White), Strafford County (87.6% White), Grafton County (87.5% White), York County (90.1% White), and Merrimack County (90.1% White).

Carroll County's Black Population

310 residents of Carroll County, or 0.6% of the population, identify as Black. The share of Black residents in Carroll County is comparable to the share in New Hampshire overall, where 1.3% of the population is Black. Carroll County ranks 10th statewide in terms of Black residents as a share of the population, out of 10 counties.

Since the 2020 Census, Carroll County's Black population has grown by an estimated 136.6%. Black residents' share of Carroll County's population has remained roughly unchanged at 0.6%.

Carroll County is more Black than neighboring Belknap County (0.5% Black). Carroll County is less Black than neighboring Strafford County (1.1% Black), Grafton County (1.1% Black), York County (1.1% Black), and Merrimack County (1.6% Black).

Carroll County's Asian Population

427 residents of Carroll County, or 0.8% of the population, identify as Asian. The share of Asian residents in Carroll County is comparable to the share in New Hampshire overall, where 2.6% of the population is Asian. Carroll County ranks 9th statewide in terms of Asian residents as a share of the population, out of 10 counties.

Since the 2020 Census, Carroll County's Asian population has grown by an estimated 19.3%. Asian residents' share of Carroll County's population has remained roughly unchanged at 0.8%.

Carroll County is less Asian than neighboring Belknap County (1.2% Asian), Strafford County (2.7% Asian), Grafton County (3.5% Asian), York County (1.1% Asian), and Merrimack County (1.5% Asian).

Carroll County's Hispanic Population

909 residents of Carroll County, or 1.8% of the population, identify as Hispanic. The share of Hispanic residents in Carroll County is slightly lower than in New Hampshire overall, where 4.7% of the population is Hispanic. Carroll County ranks 10th statewide in terms of Hispanic residents as a share of the population, out of 10 counties.

Since the 2020 Census, Carroll County's Hispanic population has grown by an estimated 18.2%. Hispanic residents' share of Carroll County's population has remained roughly unchanged at 1.8%.

Carroll County is less Hispanic than neighboring Belknap County (2.3% Hispanic), Strafford County (3.2% Hispanic), Grafton County (2.9% Hispanic), York County (2.2% Hispanic), and Merrimack County (2.7% Hispanic).

Carroll County's Native American/Other Population

225 residents of Carroll County, or 0.4% of the population, identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other. The share of Native American/Other residents in Carroll County is comparable to the share in New Hampshire overall, where 0.5% of the population is Native American/Other. Carroll County ranks 5th statewide in terms of Native American/Other residents as a share of the population, out of 10 counties.

Since the 2020 Census, Carroll County's Native American/Other population has declined by an estimated 27.9%. Native American/Other residents' share of Carroll County's population has remained roughly unchanged at 0.4%.

Carroll County is less Native American/Other than neighboring Belknap County (0.6% Native American/Other), Strafford County (0.5% Native American/Other), Grafton County (0.6% Native American/Other), York County (0.6% Native American/Other), and Merrimack County (0.5% Native American/Other).

Carroll County's Multiracial Population

1,262 residents of Carroll County, or 2.4% of the population, identify as Multiracial. The share of Multiracial residents in Carroll County is comparable to the share in New Hampshire overall, where 4% of the population is Multiracial. Carroll County ranks 10th statewide in terms of Multiracial residents as a share of the population, out of 10 counties.

Since the 2020 Census, Carroll County's Multiracial population has declined by an estimated 20.6%. Multiracial residents' share of Carroll County's population has decreased from 3.2% to 2.4%.

Carroll County is less Multiracial than neighboring Belknap County (2.8% Multiracial), Strafford County (4.8% Multiracial), Grafton County (4.4% Multiracial), York County (4.9% Multiracial), and Merrimack County (3.6% Multiracial).

Sources: Most recent population estimates are from the 2020-2024 American Community Survey 5-Year Estimates. 2020 population counts and map data are from 2020 Census State Redistricting Data. Geographic data are from Census TIGER/Line Shapefiles.