Baltimore County Demographics

A map of Baltimore County's Population by Race

Race	2024 Pop	2020 Pop	2024 %	2020 %
Black	335,489	335,615	58.5%	57.3%
White	148,914	157,296	26.0%	26.9%
Hispanic	47,018	45,927	8.2%	7.8%
Multiracial	22,566	21,088	3.9%	3.6%
Asian	14,688	21,020	2.6%	3.6%
Native American/Other	4,568	4,762	0.8%	0.8%

Baltimore County, Maryland has an estimated population of 573,243, a slight decrease from the 585,708 recorded in the 2020 Census. The population is 58.5% Black, 26.0% White, 8.2% Hispanic, 3.9% Multiracial, 2.6% Asian, and 0.8% Native American/Other. This demographic dot map shows the population of Baltimore County, with one dot drawn for each person counted by the Census, color-coded by race.

Baltimore has become slightly less 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 Baltimore County, that probability was 59.1% in 2020 and 58.1% in the most recent ACS estimates.

Baltimore County is ranked the 5th most populous county in Maryland, out of 24 counties. Baltimore County was ranked the 5th most populous county in the 2020 Census.

Baltimore County's White Population

148,914 residents of Baltimore County, or 26.0% of the population, identify as White. The share of White residents in Baltimore County is significantly lower than in Maryland overall, where 46.6% of the population is White. Baltimore County ranks 23rd statewide in terms of White residents as a share of the population, out of 24 counties.

Since the 2020 Census, Baltimore County's White population has declined by an estimated 5.3%. White residents' share of Baltimore County's population has decreased from 26.9% to 26.0%.

Baltimore County is less White than neighboring Baltimore County (51.1% White), Anne Arundel County (61.7% White), Howard County (45.9% White), Harford County (71.6% White), and Carroll County (84.5% White).

Baltimore County's Black Population

335,489 residents of Baltimore County, or 58.5% of the population, identify as Black. The share of Black residents in Baltimore County is significantly higher than in Maryland overall, where 28.9% of the population is Black. Baltimore County ranks 2nd statewide in terms of Black residents as a share of the population, out of 24 counties.

Since the 2020 Census, Baltimore County's Black population has remained roughly the same. Black residents' share of Baltimore County's population has increased from 57.3% to 58.5%.

Baltimore County is more Black than neighboring Baltimore County (30.1% Black), Anne Arundel County (17.6% Black), Howard County (19.7% Black), Harford County (14.1% Black), and Carroll County (4% Black).

Baltimore County's Asian Population

14,688 residents of Baltimore County, or 2.6% of the population, identify as Asian. The share of Asian residents in Baltimore County is slightly lower than in Maryland overall, where 6.5% of the population is Asian. Baltimore County ranks 7th statewide in terms of Asian residents as a share of the population, out of 24 counties.

Since the 2020 Census, Baltimore County's Asian population has declined by an estimated 30.1%. Asian residents' share of Baltimore County's population has decreased from 3.6% to 2.6%.

Baltimore County is more Asian than neighboring Carroll County (2.4% Asian). Baltimore County is less Asian than neighboring Baltimore County (6.1% Asian), Anne Arundel County (4.2% Asian), Howard County (19.2% Asian), and Harford County (3% Asian).

Baltimore County's Hispanic Population

47,018 residents of Baltimore County, or 8.2% of the population, identify as Hispanic. The share of Hispanic residents in Baltimore County is slightly lower than in Maryland overall, where 12.5% of the population is Hispanic. Baltimore County ranks 8th statewide in terms of Hispanic residents as a share of the population, out of 24 counties.

Since the 2020 Census, Baltimore County's Hispanic population has grown by an estimated 2.4%. Hispanic residents' share of Baltimore County's population has remained roughly unchanged at 8.2%.

Baltimore County is more Hispanic than neighboring Baltimore County (7.8% Hispanic), Harford County (5.8% Hispanic), and Carroll County (5.1% Hispanic). Baltimore County is less Hispanic than neighboring Anne Arundel County (10.5% Hispanic), and Howard County (8.7% Hispanic).

Baltimore County's Native American/Other Population

4,568 residents of Baltimore 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 Baltimore County is comparable to the share in Maryland overall, where 0.8% of the population is Native American/Other. Baltimore County ranks 6th statewide in terms of Native American/Other residents as a share of the population, out of 24 counties.

Since the 2020 Census, Baltimore County's Native American/Other population has declined by an estimated 4.1%. Native American/Other residents' share of Baltimore County's population has remained roughly unchanged at 0.8%.

Baltimore County is more Native American/Other than neighboring Anne Arundel County (0.7% Native American/Other).

Baltimore County's Multiracial Population

22,566 residents of Baltimore County, or 3.9% of the population, identify as Multiracial. The share of Multiracial residents in Baltimore County is comparable to the share in Maryland overall, where 4.6% of the population is Multiracial. Baltimore County ranks 18th statewide in terms of Multiracial residents as a share of the population, out of 24 counties.

Since the 2020 Census, Baltimore County's Multiracial population has grown by an estimated 7.0%. Multiracial residents' share of Baltimore County's population has remained roughly unchanged at 3.9%.

Baltimore County is more Multiracial than neighboring Carroll County (3.2% Multiracial). Baltimore County is less Multiracial than neighboring Baltimore County (4.1% Multiracial), Anne Arundel County (5.4% Multiracial), Howard County (5.7% Multiracial), and Harford County (4.7% 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.