County · Pennsylvania

Union County, Pennsylvania

Union County, Pennsylvania. Union County had 42,313 residents in 2025 by the Census Bureau's estimate, down 0.9% since 2020, while Pennsylvania grew 0.4%. It holds 21 places (4 cities, villages and boroughs, 10 towns and townships and 7 census-designated) and 11 census tracts. GEOID 42119.

Union County is the county of the Lewisburg, PA micropolitan statistical area (the Census Bureau's July 2023 delineation).

Residents, July 2025 estimate

42,313

Census Bureau estimate (no margin published)
2020 Census count: 42,681 · ACS 2020-2024: 42,456

Median household income

$76,404

±$4,078 (90% margin)
Pennsylvania: $77,971

Median home value

$240,100

±$8,080 (90% margin)
Pennsylvania: $254,500

Median gross rent

$974

±$47 (90% margin)
Pennsylvania: $1,209

How many people live in Union County, and is it growing?

The 2020 Census counted 42,681 residents in Union County. The Census Bureau estimates 42,313 for July 1, 2025, down 0.9% since 2020, while Pennsylvania grew 0.4%. The 2020-2024 American Community Survey puts the population at 42,456 over 316 square miles of land.

July 2020→2021 −179 (42,480)
2021→2022 +233 (42,713)
2022→2023 −528 (42,185)
2023→2024 +456 (42,641)
2024→2025 −328 (42,313)

Union County in Pennsylvania. Boundaries: Census Bureau 2024.

Counts, ACS 2020-2024 5-year estimates, with the change from 2015-2019
Measure	Union County	Pennsylvania	Change since 2015-2019
Total population	42,456	13,018,639	−2,655
Households	14,546±327	5,274,853	no clear change
Average household size	2.30±0.05	2.39	−0.16
Housing units	16,205±140	5,806,452	−1,152

Union County's population since 2000

From 41,624 in 2000 to 42,313 in 2025: up 1.7%. The 2000, 2010 and 2020 figures are census counts. The 2005 figure is the Census Bureau's intercensal estimate, revised to fit the 2000 and 2010 counts and drawn on 2010 boundaries; 2015 and 2025 are July 1 estimates made from the census before them.

2000 Census 41,624
2005 (estimate) 43,690
2010 Census 44,947
2015 (estimate) 45,573
2020 Census 42,681
2025 (estimate) 42,313

Source: The 2000, 2010 and 2020 Census counts and the Census Bureau's population estimates (intercensal 2000-2010, Vintage 2020, Vintage 2025) · Census population estimates

Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026); PEP Vintage 2025 (CO-EST2025); 2020 Census · Check it at data.census.gov

What cities and towns are in Union County?

Union County holds 21 places: 4 cities, villages and boroughs (incorporated places), 10 towns and townships (county subdivisions with their own government) and 7 census-designated places. The largest is East Buffalo Township with 8,084 residents (2025 estimate). Places that cross a county line are listed with the share of their 2020 residents who live in this county.

Places in Union County, ACS 2020-2024 5-year estimates. Ring: estimate with a coefficient of variation over 40%.

East Buffalo Township	township	7,405	7,464±110	$139,708	$350,500	3.2%	100%
Lewisburg	borough	5,158	5,257±34	$54,767	$235,200	20.8%	100%
White Deer Township	township	4,404	4,402±149	$83,611	$190,900	3.6%	100%
Gregg Township, Union County	township	4,096	4,010±19	$80,000	$169,000	39.8%	100%
Kelly Township	township	3,994	3,765±35	$54,886	$242,900	7.5%	100%
Buffalo Township, Union County	township	3,593	3,584±87	$66,781	$223,200	10.4%	100%
Mifflinburg	borough	3,485	3,473±16	$67,391	$209,500	4.6%	100%
West Buffalo Township	township	2,886	2,862±41	$79,095	$269,700	6.7%	100%
Limestone Township, Union County	township	1,751	1,894±210	$88,281	$294,200	9.3%	100%
Hartley Township	township	1,748	1,701±180	$67,356	$188,800	15.2%	100%
Linntown	CDP	1,695	1,764±487	$114,426	$265,800	5.9%	100%
Union Township, Union County	township	1,633	1,607±206	$89,250	$266,900	3.5%	100%
Lewis Township, Union County	township	1,476	1,408±224	$63,590	$231,300	10.4%	100%
New ColumbiaGEOID 4253432	CDP	1,024	766±263	$115,176	$181,900	2.2%	100%
Winfield	CDP	905	909±179	$88,625	$253,200	4.6%	100%
New Berlin	borough	801	781±148	$89,286	$204,600	11.5%	100%
West MiltonGEOID 4283520	CDP	799	804±314	$47,574	$174,200	0.0%	100%
Allenwood	CDP	334	246±77	$75,000	$163,400	6.1%	100%
Vicksburg (Union County)GEOID 4280144	CDP	255	289±210	$37,961	not published	42.6%	100%
Hartleton	borough	251	248±65	$82,875	$148,900	8.1%	100%
LaureltonGEOID 4241856	CDP	217	258±96	$67,188	$151,700	24.4%	100%

Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026); 2020 place-by-county parts · Check it at data.census.gov

Who lives in Union County?

The median resident of Union County is 41.0 years old; 17.4% are under 18 and 19.9% are 65 or older. The largest group is non-Hispanic white residents at 86.0%, then non-Hispanic Black residents at 5.7%. 3.9% of residents were born outside the United States.

Age, origin and education, ACS 2020-2024 5-year estimates. Race groups are non-Hispanic; Hispanic includes any race.
Measure	Union County	Pennsylvania	Change since 2015-2019
Median age	41.0±0.6	40.9	+1.5
Under 18 years	17.4%±0.1 pts	20.4%	–
65 years and over	19.9%±0.2 pts	19.5%	–
Hispanic or Latino (any race)	5.1%	8.7%	−0.8 pts
White alone, not Hispanic	86.0%±0.2 pts	73.0%	+1.7 pts
Black or African American alone, not Hispanic	5.7%±0.2 pts	10.3%	no clear change
Asian alone, not Hispanic	1.8%±0.3 pts	3.8%	no clear change
American Indian and Alaska Native alone, not Hispanic	0.1%±0.1 pts	0.1%	–
Native Hawaiian and Other Pacific Islander alone, not Hispanic	0.0%±0.1 pts	0.0%	–
Two or more races, not Hispanic	1.1%±0.3 pts	3.6%	–
Some other race alone, not Hispanic	0.3%±0.2 pts	0.5%	–
Born outside the United States	3.9%±0.6 pts	7.7%	+1.1 pts
Speak a language other than English at home (age 5+)	11.0%±1.2 pts	12.4%	–
Civilian veterans (age 18+)	6.4%±0.8 pts	6.1%	–
With a disability	12.5%±1.2 pts	14.4%	–
No health insurance coverage	10.4%±1.8 pts	5.6%	no clear change
High school graduate or higher (age 25+)	86.2%±1.5 pts	92.1%	–
Bachelor's degree or higher (age 25+)	26.5%±1.9 pts	35.2%	no clear change
Graduate or professional degree (age 25+)	12.0%±1.2 pts	14.3%	–
Moved from another state in the past year	5.4%±0.8 pts	1.9%	–

Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profiles DP02, DP05) · Check it at data.census.gov

What do households in Union County earn?

Half of Union County's 14,546 households earn less than $76,404 a year (±$4,078), against $77,971 in Pennsylvania. In 2015-2019 it was $73,102 in 2024 dollars; the margins of error cannot tell the two periods apart. 9.0% of residents live below the poverty line.

Income and poverty in 2024 dollars, ACS 2020-2024 5-year estimates
Measure	Union County	Pennsylvania	Change since 2015-2019
Median household income	$76,404±$4,078	$77,971	no clear change
Mean household income	$105,957±$6,878	$107,538	–
Per capita income	$37,605±$2,477	$44,355	+$4,279
People below the poverty line	9.0%±1.6 pts	11.7%	−2.8 pts
Children under 18 below the poverty line	10.3%±3.2 pts	15.6%	no clear change
Households receiving SNAP	11.8%±2.4 pts	14.4%	–
Households with a broadband subscription	80.3%±2.3 pts	89.7%	–

Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP03) · Check it at data.census.gov

What does housing cost in Union County?

Owners occupy 72.3% of Union County's occupied homes and renters 27.7%. The median owner-occupied home is valued at $240,100 by its owner (±$8,080). The median renter pays $974 a month including utilities, and 39.0% of renters pay 35% or more of their income on rent.

Housing, ACS 2020-2024 5-year estimates
Measure	Union County	Pennsylvania	Change since 2015-2019
Median home value (owner-occupied)	$240,100±$8,080	$254,500	no clear change
Median gross rent	$974±$47	$1,209	no clear change
Renters paying 35% or more of income on rent	39.0%±7.4 pts	39.5%	no clear change
Median monthly owner costs, with a mortgage	$1,625±$72	$1,762	–
Owner-occupied homes	72.3%±2.6 pts	69.3%	no clear change
Housing units	16,205±140	5,806,452	−1,152
Homeowner vacancy rate	0.8%±0.8 pts	0.8%	–
Rental vacancy rate	5.3%±2.6 pts	4.9%	–
Single-family detached homes	71.9%±2.5 pts	56.6%	–
Mobile homes	8.2%±1.6 pts	3.5%	–
Built 2020 or later	0.8%±0.5 pts	1.0%	–
Built 1939 or earlier	23.6%±2.2 pts	25.0%	–

Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP04) · Check it at data.census.gov

How many new homes is Union County building?

Builders took permits for 63 new housing units across Union County in 2025 (63 single-family), 1.5 per 1,000 residents.

2019 87 units
2020 46 units
2021 55 units
2022 55 units
2023 86 units
2024 54 units
2025 63 units

Source: Building Permits Survey, annual county files 2019-2025, U.S. Census Bureau · Census Building Permits Survey

How do people in Union County get to work?

69.6% of Union County's workers drive alone and 9.0% work from home. The average trip to work takes 17.9 minutes. The unemployment rate in 2020-2024 averaged 2.2%.

Work and commuting, ACS 2020-2024 5-year estimates
Measure	Union County	Pennsylvania	Change since 2015-2019
In the labor force (age 16+)	49.5%±1.7 pts	62.7%	–
Unemployment rate	2.2%±0.8 pts	5.3%	−1.5 pts
Drove alone to work	69.6%±2.4 pts	68.2%	–
Carpooled	7.0%±1.4 pts	7.5%	–
Public transportation	0.2%±0.1 pts	3.6%	–
Walked	11.4%±1.5 pts	3.3%	–
Worked from home	9.0%±1.3 pts	15.6%	+2.2 pts
Mean travel time to work	17.9 min±0.8	26.3 min	−3.6 min

Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP03) · Check it at data.census.gov

What are Union County's census tracts?

Union County is divided into 11 census tracts. Among those with a reliable estimate, median household income runs from $54,513 (Tract 907) to $161,250 (Tract 9808).

Census tracts of Union County, ACS 2020-2024 5-year estimates; sort by any column

Tract 901.0242119090102	New Columbia (16%)	5,495	5,485±176	$83,243	$189,200	$825	11.0%
Tract 902.0142119090201	Hartleton (13%)	1,999	1,949±185	$68,611	$182,900	$873	14.3%
Tract 902.0242119090202	–	4,264	4,174±234	$73,052	$253,800	$1,057	8.1%
Tract 90342119090300	Mifflinburg (98%)	3,583	3,569±64	$68,068	$214,500	$924	4.5%
Tract 90442119090400	New Berlin (28%)	4,185	4,282±282	$88,950	$253,000	$890	7.5%
Tract 905.0242119090502	West Milton (6%)	7,040	6,210±120	$62,500	$230,000	$926	9.2%
Tract 90642119090600	Linntown (43%)	5,914	5,532±322	$139,688	$350,600	$1,457	3.2%
Tract 90742119090700	Lewisburg	3,329	3,141±194	$54,513	$234,000	$997	20.9%
Tract 9801.0142119980101	–	3,005	2,927±84	not published	not published	not published	0.0%
Tract 9805.0142119980501	–	547	1,139±35	not published	not published	not published	0.0%
Tract 980842119980800	Lewisburg (52%)	3,320	4,048±201	$161,250	$602,300	not published	0.0%

Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) · Check it at data.census.gov

How does Union County compare with Pennsylvania's other counties?

Union County's rank among Pennsylvania's counties with a reliable estimate (1 = highest)
Measure	Rank
Population	50th of 67
Growth 2020-2025	37th of 67
Residents per square mile	35th of 67
Median household income	21st of 67
Median home value	21st of 67
Median gross rent	26th of 67
Poverty rate	54th of 67
Bachelor's degree or higher	26th of 67
Median age	52nd of 67

Every county in Pennsylvania

Source: PlainCities ranks from the American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) and PEP Vintage 2025 · How ranks are computed

How these figures are made: methodology and release checks · reading a margin of error · every state · corrections

Not on this page: crime, weather and schools for Union County are other agencies' records. Crime: the FBI's Crime Data Explorer · climate: NOAA's U.S. Climate Normals · schools: the National Center for Education Statistics' school search.