Ariano Irpino

Ariano Irpino
Ariano
Ariano di Puglia
Comune di Ariano Irpino
Panorama of Ariano Irpino
Nickname: 
City of the Three Knolls
Ariano Irpino within the Province of Avellino
Ariano Irpino
Location of Ariano Irpino in Italy
Ariano Irpino
Ariano Irpino (Campania)
Coordinates: 41°9′10″N 15°5′20″E / 41.15278°N 15.08889°E / 41.15278; 15.08889
CountryItaly
RegionCampania
ProvinceAvellino (AV)
Government
 • MayorEnrico Franza (PSI)
Area
 • Total
186.74 km2 (72.10 sq mi)
Elevation
788 m (2,585 ft)
Highest elevation
811 m (2,661 ft)
Lowest elevation
179 m (587 ft)
Population
 (31 August 2025)
 • Total
20,644
 • Density110.55/km2 (286.32/sq mi)
DemonymArianese
Time zoneUTC+1 (CET)
 • Summer (DST)UTC+2 (CEST)
Postal code
83031
Dialing code0825
ISTAT code064005
Patron saintOtho Frangipane
Saint day23 March
WebsiteOfficial website

Ariano Irpino (Italian pronunciation: [aˈrjaːno irˈpiːno]), known until 1930 as Ariano di Puglia, and historically and in the local dialect simply as Ariano, is an Italian commune with a population of 20,706 inhabitants located in the Province of Avellino within the Campania region.

Perched atop a highland straddling the Apennines and endowed with an expansive territory at the crossroads of ancient routes, this small town swiftly gained strategic prominence, rising from the Early Middle Ages to become the seat of both the Diocese of Ariano and the County of Ariano.

Chosen by King Roger II of Sicily as the venue for the renowned Assizes of Ariano, celebrated for the artistry of its maiolica, the town proudly bears the title of city within the farthest reaches of the regional hinterland, directly bordering Apulia.