Mifflinburg, PA Population: 3,625 (2020 Census)

Borough Demographics at a Glance

According to the 2020 United States Census, the borough of Mifflinburg in Union County, Pennsylvania had a population of 3,625.

Quick Context

• County Seat: Lewisburg (pop. 5,734).
• Region: Central PA, Buffalo Valley, near R.B. Winter State Park.
• Historic Note: Known for 19th-century buggy manufacturing; annual Mifflinburg Buggy Days festival.
• Area: 1.9 sq mi (all land).
• Density: ~1,900/sq mi.

Recent Trend

Population has been relatively stable: 3,540 (2010) → 3,625 (2020), a +2.4% change.