Montgomery County Demographics

A map of Montgomery County's Population by Race

Race	2024 Pop	2020 Pop	2024 %	2020 %
White	619,965	618,244	71.5%	72.2%
Black	79,399	79,510	9.2%	9.3%
Asian	69,790	67,761	8.0%	7.9%
Hispanic	58,178	54,512	6.7%	6.4%
Multiracial	34,854	31,732	4.0%	3.7%
Native American/Other	5,387	4,794	0.6%	0.6%

Montgomery County, Pennsylvania has an estimated population of 867,573, a slight increase from the 856,553 recorded in the 2020 Census. The population is 71.5% White, 9.2% Black, 8.0% Asian, 6.7% Hispanic, 4.0% Multiracial, and 0.6% Native American/Other. This demographic dot map shows the population of Montgomery County, with one dot drawn for each person counted by the Census, color-coded by race.

Montgomery has become slightly more racially diverse since the 2020 Census. It is more diverse than Pennsylvania overall. Demographers use a diversity index to measure the probability that two randomly selected individuals belong to different racial or ethnic groups. In Montgomery County, that probability was 45.9% in 2020 and 46.8% in the most recent ACS estimates.

Montgomery County is ranked the 3rd most populous county in Pennsylvania, out of 67 counties. Montgomery County was ranked the 3rd most populous county in the 2020 Census.

Montgomery County's White Population

619,965 residents of Montgomery County, or 71.5% of the population, identify as White. The share of White residents in Montgomery County is comparable to the share in Pennsylvania overall, where 73% of the population is White. Montgomery County ranks 61st statewide in terms of White residents as a share of the population, out of 67 counties.

Since the 2020 Census, Montgomery County's White population has remained roughly the same. White residents' share of Montgomery County's population has decreased from 72.2% to 71.5%.

Montgomery County is more White than neighboring Delaware County (62.4% White), Philadelphia County (33.2% White), and Lehigh County (59.1% White). Montgomery County is less White than neighboring Bucks County (79.9% White), and Chester County (75.4% White).

Montgomery County's Black Population

79,399 residents of Montgomery County, or 9.2% of the population, identify as Black. The share of Black residents in Montgomery County is comparable to the share in Pennsylvania overall, where 10.3% of the population is Black. Montgomery County ranks 7th statewide in terms of Black residents as a share of the population, out of 67 counties.

Since the 2020 Census, Montgomery County's Black population has remained roughly the same. Black residents' share of Montgomery County's population has remained roughly unchanged at 9.2%.

Montgomery County is more Black than neighboring Bucks County (3.7% Black), Chester County (4.9% Black), and Lehigh County (5.9% Black). Montgomery County is less Black than neighboring Delaware County (21.9% Black), and Philadelphia County (38.3% Black).

Montgomery County's Asian Population

69,790 residents of Montgomery County, or 8.0% of the population, identify as Asian. The share of Asian residents in Montgomery County is slightly higher than in Pennsylvania overall, where 3.8% of the population is Asian. Montgomery County ranks 2nd statewide in terms of Asian residents as a share of the population, out of 67 counties.

Since the 2020 Census, Montgomery County's Asian population has grown by an estimated 3.0%. Asian residents' share of Montgomery County's population has remained roughly unchanged at 8.0%.

Montgomery County is more Asian than neighboring Bucks County (5% Asian), Delaware County (6.3% Asian), Philadelphia County (7.9% Asian), Chester County (6.7% Asian), and Lehigh County (3.5% Asian).

Montgomery County's Hispanic Population

58,178 residents of Montgomery County, or 6.7% of the population, identify as Hispanic. The share of Hispanic residents in Montgomery County is comparable to the share in Pennsylvania overall, where 8.7% of the population is Hispanic. Montgomery County ranks 16th statewide in terms of Hispanic residents as a share of the population, out of 67 counties.

Since the 2020 Census, Montgomery County's Hispanic population has grown by an estimated 6.7%. Hispanic residents' share of Montgomery County's population has remained roughly unchanged at 6.7%.

Montgomery County is more Hispanic than neighboring Bucks County (6.6% Hispanic), and Delaware County (5% Hispanic). Montgomery County is less Hispanic than neighboring Philadelphia County (15.6% Hispanic), Chester County (8.4% Hispanic), and Lehigh County (28% Hispanic).

Montgomery County's Native American/Other Population

5,387 residents of Montgomery County, or 0.6% of the population, identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other. The share of Native American/Other residents in Montgomery County is comparable to the share in Pennsylvania overall, where 0.6% of the population is Native American/Other. Montgomery County ranks 11th statewide in terms of Native American/Other residents as a share of the population, out of 67 counties.

Since the 2020 Census, Montgomery County's Native American/Other population has grown by an estimated 12.4%. Native American/Other residents' share of Montgomery County's population has remained roughly unchanged at 0.6%.

Montgomery County is more Native American/Other than neighboring Chester County (0.4% Native American/Other). Montgomery County is less Native American/Other than neighboring Bucks County (0.8% Native American/Other), and Philadelphia County (0.9% Native American/Other).

Montgomery County's Multiracial Population

34,854 residents of Montgomery County, or 4.0% of the population, identify as Multiracial. The share of Multiracial residents in Montgomery County is comparable to the share in Pennsylvania overall, where 3.6% of the population is Multiracial. Montgomery County ranks 17th statewide in terms of Multiracial residents as a share of the population, out of 67 counties.

Since the 2020 Census, Montgomery County's Multiracial population has grown by an estimated 9.8%. Multiracial residents' share of Montgomery County's population has remained roughly unchanged at 4.0%.

Montgomery County is more Multiracial than neighboring Delaware County (3.8% Multiracial), and Lehigh County (2.9% Multiracial). Montgomery County is less Multiracial than neighboring Philadelphia County (4.1% Multiracial), and Chester County (4.1% 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.