Frederick County Demographics

A map of Frederick County's Population by Race

Race	2024 Pop	2020 Pop	2024 %	2020 %
White	188,615	183,636	65.7%	67.6%
Hispanic	36,962	32,119	12.9%	11.8%
Black	28,907	27,007	10.1%	9.9%
Asian	16,825	13,427	5.9%	4.9%
Multiracial	14,478	13,528	5.0%	5.0%
Native American/Other	1,261	2,000	0.4%	0.7%

Frederick County, Maryland has an estimated population of 287,048, an increase from the 271,717 recorded in the 2020 Census. The population is 65.7% White, 12.9% Hispanic, 10.1% Black, 5.9% Asian, 5.0% Multiracial, and 0.4% Native American/Other. This demographic dot map shows the population of Frederick County, with one dot drawn for each person counted by the Census, color-coded by race.

Frederick has become 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 Frederick County, that probability was 51.4% in 2020 and 53.5% in the most recent ACS estimates.

Frederick County is ranked the 7th most populous county in Maryland, out of 24 counties. Frederick County was ranked the 7th most populous county in the 2020 Census.

Frederick County's White Population

188,615 residents of Frederick County, or 65.7% of the population, identify as White. The share of White residents in Frederick County is significantly higher than in Maryland overall, where 46.6% of the population is White. Frederick County ranks 14th statewide in terms of White residents as a share of the population, out of 24 counties.

Since the 2020 Census, Frederick County's White population has grown by an estimated 2.7%. White residents' share of Frederick County's population has decreased from 67.6% to 65.7%.

Frederick County is more White than neighboring Montgomery County (39.5% White), and Loudoun County (51% White). Frederick County is less White than neighboring Carroll County (84.5% White), Washington County (73.3% White), and Adams County (86.8% White).

Frederick County's Black Population

28,907 residents of Frederick County, or 10.1% of the population, identify as Black. The share of Black residents in Frederick County is significantly lower than in Maryland overall, where 28.9% of the population is Black. Frederick County ranks 19th statewide in terms of Black residents as a share of the population, out of 24 counties.

Since the 2020 Census, Frederick County's Black population has grown by an estimated 7.0%. Black residents' share of Frederick County's population has remained roughly unchanged at 10.1%.

Frederick County is more Black than neighboring Carroll County (4% Black), Adams County (1.6% Black), and Loudoun County (7.5% Black). Frederick County is less Black than neighboring Montgomery County (18.3% Black), and Washington County (11.5% Black).

Frederick County's Asian Population

16,825 residents of Frederick County, or 5.9% of the population, identify as Asian. The share of Asian residents in Frederick County is comparable to the share in Maryland overall, where 6.5% of the population is Asian. Frederick County ranks 4th statewide in terms of Asian residents as a share of the population, out of 24 counties.

Since the 2020 Census, Frederick County's Asian population has grown by an estimated 25.3%. Asian residents' share of Frederick County's population has increased from 4.9% to 5.9%.

Frederick County is more Asian than neighboring Carroll County (2.4% Asian), Washington County (1.6% Asian), and Adams County (0.9% Asian). Frederick County is less Asian than neighboring Montgomery County (15.3% Asian), and Loudoun County (21.7% Asian).

Frederick County's Hispanic Population

36,962 residents of Frederick County, or 12.9% of the population, identify as Hispanic. The share of Hispanic residents in Frederick County is comparable to the share in Maryland overall, where 12.5% of the population is Hispanic. Frederick County ranks 3rd statewide in terms of Hispanic residents as a share of the population, out of 24 counties.

Since the 2020 Census, Frederick County's Hispanic population has grown by an estimated 15.1%. Hispanic residents' share of Frederick County's population has increased from 11.8% to 12.9%.

Frederick County is more Hispanic than neighboring Carroll County (5.1% Hispanic), Washington County (7.9% Hispanic), and Adams County (7.7% Hispanic). Frederick County is less Hispanic than neighboring Montgomery County (21% Hispanic), and Loudoun County (14.3% Hispanic).

Frederick County's Native American/Other Population

1,261 residents of Frederick 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 Frederick County is comparable to the share in Maryland overall, where 0.8% of the population is Native American/Other. Frederick County ranks 10th statewide in terms of Native American/Other residents as a share of the population, out of 24 counties.

Since the 2020 Census, Frederick County's Native American/Other population has declined by an estimated 37.0%. Native American/Other residents' share of Frederick County's population has remained roughly unchanged at 0.4%.

Frederick County is less Native American/Other than neighboring Carroll County (0.8% Native American/Other), Montgomery County (1.1% Native American/Other), and Loudoun County (0.9% Native American/Other).

Frederick County's Multiracial Population

14,478 residents of Frederick County, or 5.0% of the population, identify as Multiracial. The share of Multiracial residents in Frederick County is comparable to the share in Maryland overall, where 4.6% of the population is Multiracial. Frederick County ranks 9th statewide in terms of Multiracial residents as a share of the population, out of 24 counties.

Since the 2020 Census, Frederick County's Multiracial population has grown by an estimated 7.0%. Multiracial residents' share of Frederick County's population has remained roughly unchanged at 5.0%.

Frederick County is more Multiracial than neighboring Carroll County (3.2% Multiracial), Montgomery County (4.8% Multiracial), Adams County (2.5% Multiracial), and Loudoun County (4.6% Multiracial). Frederick County is less Multiracial than neighboring Washington County (5.3% 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.