Carroll County Demographics

A map of Carroll County's Population by Race

Race	2024 Pop	2020 Pop	2024 %	2020 %
White	148,104	146,701	84.5%	84.9%
Hispanic	8,923	7,745	5.1%	4.5%
Black	7,035	6,361	4.0%	3.7%
Multiracial	5,630	7,413	3.2%	4.3%
Asian	4,195	3,766	2.4%	2.2%
Native American/Other	1,434	905	0.8%	0.5%

Carroll County, Maryland has an estimated population of 175,321, a slight increase from the 172,891 recorded in the 2020 Census. The population is 84.5% White, 5.1% Hispanic, 4.0% Black, 3.2% Multiracial, 2.4% Asian, and 0.8% 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 has become slightly more racially diverse since the 2020 Census. It is considerably less diverse than Maryland 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 27.4% in 2020 and 28.1% in the most recent ACS estimates.

Carroll County is ranked the 9th most populous county in Maryland, out of 24 counties. Carroll County was ranked the 9th most populous county in the 2020 Census.

Carroll County's White Population

148,104 residents of Carroll County, or 84.5% of the population, identify as White. The share of White residents in Carroll County is significantly higher than in Maryland overall, where 46.6% of the population is White. Carroll County ranks 3rd statewide in terms of White residents as a share of the population, out of 24 counties.

Since the 2020 Census, Carroll County's White population has remained roughly the same. White residents' share of Carroll County's population has remained roughly unchanged at 84.5%.

Carroll County is more White than neighboring Howard County (45.9% White), Frederick County (65.7% White), Baltimore County (51.1% White), and Montgomery County (39.5% White). Carroll County is less White than neighboring Adams County (86.8% White).

Carroll County's Black Population

7,035 residents of Carroll County, or 4.0% of the population, identify as Black. The share of Black residents in Carroll County is significantly lower than in Maryland overall, where 28.9% of the population is Black. Carroll County ranks 23rd statewide in terms of Black residents as a share of the population, out of 24 counties.

Since the 2020 Census, Carroll County's Black population has grown by an estimated 10.6%. Black residents' share of Carroll County's population has remained roughly unchanged at 4.0%.

Carroll County is more Black than neighboring Adams County (1.6% Black). Carroll County is less Black than neighboring Howard County (19.7% Black), Frederick County (10.1% Black), Baltimore County (30.1% Black), and Montgomery County (18.3% Black).

Carroll County's Asian Population

4,195 residents of Carroll County, or 2.4% of the population, identify as Asian. The share of Asian residents in Carroll County is slightly lower than in Maryland overall, where 6.5% of the population is Asian. Carroll County ranks 12th statewide in terms of Asian residents as a share of the population, out of 24 counties.

Since the 2020 Census, Carroll County's Asian population has grown by an estimated 11.4%. Asian residents' share of Carroll County's population has remained roughly unchanged at 2.4%.

Carroll County is more Asian than neighboring Adams County (0.9% Asian). Carroll County is less Asian than neighboring Howard County (19.2% Asian), Frederick County (5.9% Asian), Baltimore County (6.1% Asian), and Montgomery County (15.3% Asian).

Carroll County's Hispanic Population

8,923 residents of Carroll County, or 5.1% of the population, identify as Hispanic. The share of Hispanic residents in Carroll County is lower than in Maryland overall, where 12.5% of the population is Hispanic. Carroll County ranks 20th statewide in terms of Hispanic residents as a share of the population, out of 24 counties.

Since the 2020 Census, Carroll County's Hispanic population has grown by an estimated 15.2%. Hispanic residents' share of Carroll County's population has increased from 4.5% to 5.1%.

Carroll County is less Hispanic than neighboring Howard County (8.7% Hispanic), Adams County (7.7% Hispanic), Frederick County (12.9% Hispanic), Baltimore County (7.8% Hispanic), and Montgomery County (21% Hispanic).

Carroll County's Native American/Other Population

1,434 residents of Carroll County, or 0.8% 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 Maryland overall, where 0.8% of the population is Native American/Other. Carroll County ranks 20th statewide in terms of Native American/Other residents as a share of the population, out of 24 counties.

Since the 2020 Census, Carroll County's Native American/Other population has grown by an estimated 58.5%. Native American/Other residents' share of Carroll County's population has remained roughly unchanged at 0.8%.

Carroll County is more Native American/Other than neighboring Adams County (0.4% Native American/Other), and Frederick County (0.4% Native American/Other). Carroll County is less Native American/Other than neighboring Montgomery County (1.1% Native American/Other).

Carroll County's Multiracial Population

5,630 residents of Carroll County, or 3.2% of the population, identify as Multiracial. The share of Multiracial residents in Carroll County is comparable to the share in Maryland overall, where 4.6% of the population is Multiracial. Carroll County ranks 13th statewide in terms of Multiracial residents as a share of the population, out of 24 counties.

Since the 2020 Census, Carroll County's Multiracial population has declined by an estimated 24.1%. Multiracial residents' share of Carroll County's population has decreased from 4.3% to 3.2%.

Carroll County is more Multiracial than neighboring Adams County (2.5% Multiracial). Carroll County is less Multiracial than neighboring Howard County (5.7% Multiracial), Frederick County (5% Multiracial), Baltimore County (4.1% Multiracial), and Montgomery County (4.8% 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.