|Comune di Castel Baronia|
|• Mayor||Felice Martone|
|• Total||15.37 km2 (5.93 sq mi)|
|Elevation||639 m (2,096 ft)|
(31 May 2017)
|• Density||72/km2 (190/sq mi)|
|Time zone||UTC+1 (CET)|
|• Summer (DST)||UTC+2 (CEST)|
|Patron saint||Madonna delle Fratte|
|Saint day||2 February|
Located in the Apennines between the Ufita Valley and Daunian Mountains, the town is part of the Roman Catholic Diocese of Ariano Irpino-Lacedonia. Its territory borders the municipalities of Carife, Flumeri, San Nicola Baronia, Sturno, and Trevico.
The name of the town comes from the word Castello (from the Latin Castellum) due to the existence dating back to the Norman era, of an impenetrable fort in the highest part of the area, Trevico, 1,090 metres (3,580 ft) above sea level, which dominated the town and surrounding areas. The Baronia area was the last fort of the province of Avellino that faced the so-called "table of puglia". The word Baronia was added to Castel when the district entered under the jurisdiction of the Baronia di Vico.
The first written record of this town dates back to when a certain Gradilione in 1079, nephew of the Norman Robert Guiscard, owned the lands of Vico. In 1122 the owner of this Castle was Riccardo de Formari, killed during the battle of Flumeri. The last nobleman to own Castel Baronia was Nicola Caracciolo, from the duchy of San Vito, until the abolition in the Kingdom of Two Sicilies of feudality in 1806.
- Castello della Barona (1130)
- "Superficie di Comuni Province e Regioni italiane al 9 ottobre 2011". Istat. Retrieved 16 March 2019.
- "Popolazione Residente al 1° Gennaio 2018". Istat. Retrieved 16 March 2019.
- All demographics and other statistics from the Italian statistical institute (Istat); Dati - Popolazione residente all'1/5/2009