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Where am ILOCATED

Union County, Pennsylvania

Union County, Pennsylvania, has 42,313 residents (July 2025 estimate). Its county seat is Lewisburg. It uses Eastern Time and covers 316 sq mi (818 km²) of land.

PhiladelphiaPittsburghAllentown
Union County in Pennsylvania
Northumberland CountyLewisburgMifflinburgLinntownWinfieldWest Milton
Union County and its neighbors (simplified outlines). Open in OpenStreetMap ↗
Resident population, July 2025
42,313
Land area
316 sq mi (818 km²)
County seat or government
Lewisburg
Time zone
Eastern TimeUTC-05:00 in January; UTC-04:00 in July
Median household income
$76,404 ± $4,078
Median home value
$240,100 ± $8,080
Median rent, with utilities
$974 ± $47
Homes lived in by their owners
72.3% ± 2.2 points
County type
County
Metro or micro area
Lewisburg, PA micro areaCentral county
Water area
1.78 sq mi (4.61 km²)
State
Pennsylvania
County code (FIPS)
42119
Coordinates (central point)
40.962179, -77.055475
Open this point in the location finder

These coordinates mark a central point for the area, not a street address. Income, home value, rent and homes lived in by their owners: U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, ± margin at 90% confidence; checked on October 13, 2026.

Time zones in Union County

Time zoneLocal time and UTC offsetNext clock change
Eastern TimeAmerica/New_YorkUTC-05:00 in January; UTC-04:00 in July. Enable JavaScript for the live clock.Enable JavaScript for upcoming changes.

Near a time-zone line, check where you are with the time-zone finder. Your phone’s setting can differ.

ZIP Code areas, largest first

  1. 1783718,403 people
  2. 1787014,490 people
  3. 1784410,291 people
  4. 178105,309 people
  5. 178563,167 people
  6. 178893,039 people
  7. 178452,058 people
  8. 178551,014 people
  9. 17886804 people
  10. 17887591 people
  11. 17829212 people
  12. 17885181 people
All 14
  1. 17835114 people
  2. 1788029 people

14 ZIP Code areas overlap Union County. People counts are 2020–2024 estimates for each whole ZIP area. Mailing ZIPs can differ; check an address with USPS ZIP Code Lookup.

Official county information

We don’t have a website for this county yet. The US government’s local-office directory ↗ lists its offices. A geographic lookup cannot determine eligibility, tax liability or a court obligation.

Townships in Union County, largest first

  1. East Buffalo Township7,464 people
  2. White Deer Township4,402 people
  3. Gregg Township4,010 people
  4. Kelly Township3,765 people
  5. Buffalo Township3,584 people
  6. West Buffalo Township2,862 people
  7. Limestone Township1,894 people
  8. Hartley Township1,701 people
  9. Union Township1,607 people
  10. Lewis Township1,408 people

People counts are American Community Survey 2020–2024 5-year estimates. All townships in Pennsylvania, by county

School districts in Union County, largest first

  1. Lewisburg Area School District17,956 people
  2. Mifflinburg Area School District16,088 people
  3. Warrior Run School District15,834 people
  4. Milton Area School District15,717 people

Districts with land in the county; a district can cross county lines. People counts are American Community Survey 2020–2024 5-year estimates. A district boundary doesn’t decide which school a student attends.

Cities, towns and communities, largest first

These areas overlap the mapped boundary; an overlap does not mean that every address belongs to both.

  1. Lewisburg, Pennsylvania (borough)5,257 people
  2. Mifflinburg, Pennsylvania (borough)3,473 people
  3. Linntown, Pennsylvania (CDP)1,764 people
  4. Winfield, Pennsylvania (CDP)909 people
  5. West Milton, Pennsylvania (CDP)804 people
  6. New Berlin, Pennsylvania (borough)781 people
  7. New Columbia, Pennsylvania (CDP)766 people
  8. Vicksburg, Union County, Pennsylvania (CDP)289 people
  9. Laurelton, Pennsylvania (CDP)258 people
  10. Hartleton, Pennsylvania (borough)248 people
  11. Allenwood, Pennsylvania (CDP)246 people

Bordering areas, nearest first

Distances are straight lines between map points.

  1. Snyder County, Pennsylvania14 mi south
  2. Northumberland County, Pennsylvania20 mi southeast
  3. Lycoming County, Pennsylvania26 mi north
  4. Clinton County, Pennsylvania35 mi northwest
  5. Mifflin County, Pennsylvania40 mi southwest
  6. Centre County, Pennsylvania42 mi west

Before using this answer on a form

Use a precise point for address-level questions. A device accuracy circle can cross a boundary; confirm tax, voting or jury details with the responsible office.

Find the county where you are now, check its ZIP area, or check the time zone where you are.

See this county on Census.gov ↗

Areas that only touch the edge

These areas meet the boundary only along a sliver. Most addresses here are not in them; for an address near the line, check with the county.