Union County is named for the Federal Union of the United States of America.
Surrounding County Courthouses:
N – Lycoming County
S – Snyder County
W – Miflin County, Centre County and Clinton County
Created: March 23, 1813 
County Seat:
Mifflinburg 1813 – 1815
New Berlin 1815 – 1855
Lewisburg 1855 – present
County Courthouse – Lewisburg
Location: 103 South 2nd Street / St. Louis Street
Built: 1855 – 1857
Style: Greek Revival
Architect: Lewis Palmer
Contractor: Lewis Palmer
Description: The building faces east and is a two story red colored brick structure. The building is located on landscaped grounds in the center of Lewisburg. The east front has a large portico with four white colored columns rising to a pediment at the roof line. Wide eaves run along the roof line. On the center of the roof is a white colored octagonal cupola with bell. The newer section built in 1971 to 1973 was constructed by Steve Black and A G Crunkleton.
Note: The bell in the courthouse tower was the gift of Simon Cameron, Secretary of War under Abraham Lincoln.
Old County Courthouse – New Berlin
Location: SE – Market & Vine
Built: 1814 – 1815
Style: Federal
Architect: Unknown
Contractor: Unknown
Description: The building faces west and is a two story red colored brick structure. The building is three bays wide and four bays deep with a gable roof. The roof features a center cupola. The building was renovated in 1855 to 1857 and was converted to a schoolhouse until 1952. The building now houses the New Berlin Heritage Museum, also known as the New Berlin Post Office and the Courthouse Museum.
History: The county was created in 1813 and Mifflinburg was selected as the county seat. The county seat was moved to New Berlin in 1815 and the first courthouse, a two story brick structure, was built. The county seat was moved to Lewisburg in 1855. The second courthouse was constructed in 1855 to 1857.
County Courthouse - Lewisburg
Photos taken 2011