County ProfilePA
Union County
Population: 42,681 · 13 ZIP codes
Demographics
Source: U.S. Census Bureau (ACS/Decennial). Estimates vary by year.
People
Total population
42,681
People
Median age
41
Housing
Total households
14,546
Income
Median household income
$76,404
Housing
Total housing units
16,205
Employment
Employment rate
48.4%
Education
Bachelor’s degree or higher
26.5%
Healthcare
Insured population
89.6%
County details
Local time 01:51:35(ET)| Name | Union |
|---|---|
| Total ZIP codes | 13total |
| ZIP codes (by type) | 8 Standard5 PO Box |
| Area code | 272, 570 |
| Timezone | Eastern Time (ET) |
| Coordinates | 40.962179, -77.0554751 |
| Land area | 316 sq miles(818.3 km²) |
Map of Union county, Pennsylvania with ZIP codes
Cities and Communities in Union County
Compare the largest cities in Union County by population, median income, and growth. Use the table below to analyze key demographic shifts across the region.
| City | Population | Median incomeHousehold | ZIP codes |
|---|---|---|---|
| Lewisburg | 5,158 | $54,767 | 1ZIPs |
| Mifflinburg | 3,485 | $67,391 | 1ZIPs |
| Millmont | 2,207 | — | 1ZIPs |
| New Columbia | 1,024 | $115,176 | 1ZIPs |
| Winfield | 905 | $88,625 | 1ZIPs |
| New Berlin | 801 | $89,286 | 1ZIPs |
| West Milton | 799 | $47,574 | 1ZIPs |
| Allenwood | 334 | $75,000 | 1ZIPs |
| White Deer | 305 | — | 1ZIPs |
| Hartleton | 251 | $82,875 | 1ZIPs |
| Weikert | 221 | — | 1ZIPs |
| Laurelton | 217 | $67,188 | 1ZIPs |
| Swengel | 71 | — | 1ZIPs |
— Data unavailable or suppressed by the U.S. Census Bureau for areas with small sample sizes to protect individual privacy.
ZIP Codes in Union County
Review the most populated postal areas across Union County. Use the ranking below to compare resident density and demographic scales between the county's major zones.
| ZIP | City | Median incomeHousehold | Population (ZIP) |
|---|---|---|---|
| 17837 | Lewisburg | $88,975 | 18,734 |
| 17844 | Mifflinburg | $68,314 | 9,996 |
| 17810 | Allenwood | $77,232 | 5,270 |
| 17856 | New Columbia | $91,661 | 3,473 |
| 17889 | Winfield | $89,063 | 2,979 |
| 17845 | Millmont | $66,510 | 2,207 |
| 17855 | New Berlin | $88,929 | 924 |
| 17886 | West Milton | $47,574 | 777 |
| 17887 | White Deer | — | 305 |
| 17885 | Weikert | $92,917 | 221 |
| 17829 | Hartleton | $80,417 | 193 |
| 17880 | Swengel | $61,667 | 71 |
| 17835 | Laurelton | $48,611 | 69 |
Data Sources & Citations
The geographic and demographic information presented on this site is compiled from publicly available, authoritative sources, including:
- United States Census BureauDemographic, population, housing, and socioeconomic data sourced from Census Bureau datasets, including the Decennial Census and the American Community Survey (ACS).Census Data
- United States Postal Service (USPS)ZIP code classifications, delivery types, and postal designations used for reference purposes. USPS ZIP codes are intended for mail delivery and may not always align exactly with Census geographic boundaries.USPS