Union County Demographics

A map of Union County's Population by Race

Race	2024 Pop	2020 Pop	2024 %	2020 %
White	36,495	36,050	86.0%	84.5%
Black	2,404	2,459	5.7%	5.8%
Hispanic	2,147	2,000	5.1%	4.7%
Asian	779	814	1.8%	1.9%
Multiracial	462	1,156	1.1%	2.7%
Native American/Other	169	202	0.4%	0.5%

Union County, Pennsylvania has an estimated population of 42,456, a less than 1% change from the 42,681 recorded in the 2020 Census. The population is 86.0% White, 5.7% Black, 5.1% Hispanic, 1.8% Asian, 1.1% Multiracial, and 0.4% Native American/Other. This demographic dot map shows the population of Union County, with one dot drawn for each person counted by the Census, color-coded by race.

Union has become less racially diverse since the 2020 Census. It is considerably less 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 Union County, that probability was 28.0% in 2020 and 25.5% in the most recent ACS estimates.

Union County is ranked the 50th most populous county in Pennsylvania, out of 67 counties. Union County was ranked the 50th most populous county in the 2020 Census.

Union County's White Population

36,495 residents of Union County, or 86.0% of the population, identify as White. The share of White residents in Union County is considerably higher than in Pennsylvania overall, where 73% of the population is White. Union County ranks 46th statewide in terms of White residents as a share of the population, out of 67 counties.

Since the 2020 Census, Union County's White population has grown by an estimated 1.2%. White residents' share of Union County's population has increased from 84.5% to 86.0%.

Union County is less White than neighboring Snyder County (93.8% White), Northumberland County (88.7% White), Lycoming County (88.1% White), Montour County (89% White), and Juniata County (91.9% White).

Union County's Black Population

2,404 residents of Union County, or 5.7% of the population, identify as Black. The share of Black residents in Union County is slightly lower than in Pennsylvania overall, where 10.3% of the population is Black. Union County ranks 11th statewide in terms of Black residents as a share of the population, out of 67 counties.

Since the 2020 Census, Union County's Black population has declined by an estimated 2.2%. Black residents' share of Union County's population has remained roughly unchanged at 5.7%.

Union County is more Black than neighboring Snyder County (0.7% Black), Northumberland County (2.6% Black), Lycoming County (4% Black), Montour County (2.4% Black), and Juniata County (1% Black).

Union County's Asian Population

779 residents of Union County, or 1.8% of the population, identify as Asian. The share of Asian residents in Union County is comparable to the share in Pennsylvania overall, where 3.8% of the population is Asian. Union County ranks 17th statewide in terms of Asian residents as a share of the population, out of 67 counties.

Since the 2020 Census, Union County's Asian population has declined by an estimated 4.3%. Asian residents' share of Union County's population has remained roughly unchanged at 1.8%.

Union County is more Asian than neighboring Snyder County (0.7% Asian), Northumberland County (0.4% Asian), Lycoming County (0.9% Asian), and Juniata County (0.5% Asian). Union County is less Asian than neighboring Montour County (3.4% Asian).

Union County's Hispanic Population

2,147 residents of Union County, or 5.1% of the population, identify as Hispanic. The share of Hispanic residents in Union County is slightly lower than in Pennsylvania overall, where 8.7% of the population is Hispanic. Union County ranks 20th statewide in terms of Hispanic residents as a share of the population, out of 67 counties.

Since the 2020 Census, Union County's Hispanic population has grown by an estimated 7.3%. Hispanic residents' share of Union County's population has remained roughly unchanged at 5.1%.

Union County is more Hispanic than neighboring Snyder County (2.6% Hispanic), Lycoming County (2.4% Hispanic), Montour County (3.1% Hispanic), and Juniata County (4.1% Hispanic). Union County is less Hispanic than neighboring Northumberland County (5.2% Hispanic).

Union County's Native American/Other Population

169 residents of Union 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 Union County is comparable to the share in Pennsylvania overall, where 0.6% of the population is Native American/Other. Union County ranks 25th statewide in terms of Native American/Other residents as a share of the population, out of 67 counties.

Since the 2020 Census, Union County's Native American/Other population has declined by an estimated 16.3%. Native American/Other residents' share of Union County's population has remained roughly unchanged at 0.4%.

Union County is more Native American/Other than neighboring Lycoming County (0.3% Native American/Other), Montour County (0.2% Native American/Other), and Juniata County (0.3% Native American/Other). Union County is less Native American/Other than neighboring Snyder County (0.5% Native American/Other), and Northumberland County (0.5% Native American/Other).

Union County's Multiracial Population

462 residents of Union County, or 1.1% of the population, identify as Multiracial. The share of Multiracial residents in Union County is slightly lower than in Pennsylvania overall, where 3.6% of the population is Multiracial. Union County ranks 56th statewide in terms of Multiracial residents as a share of the population, out of 67 counties.

Since the 2020 Census, Union County's Multiracial population has declined by an estimated 60.0%. Multiracial residents' share of Union County's population has decreased from 2.7% to 1.1%.

Union County is less Multiracial than neighboring Snyder County (1.7% Multiracial), Northumberland County (2.6% Multiracial), Lycoming County (4.4% Multiracial), Montour County (1.8% Multiracial), and Juniata County (2.1% 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.