ISO 3166-2 codes for Italy cover 103 provinces. Each province has a 2-letter code, that is also used for car signs. Together with the ISO 3166-1 code IT for Italy they form the ISO 3166-2 codes. The purpose of this family of standards is to establish a worldwide series of short abbreviations for places, for use on package labels, containers and such. Anywhere where a short alphanumeric code can serve to clearly indicate a location in a more convenient and less ambiguous form than the full place name.
Note: In 1999, the former Province Forlì / FO was renamed as Province Forlì-Cesena, commonly coded with FC. In the same year, the common coding for the Province Pesaro-Urbino has become PU instead of PS. However, ISO 3166-2 still sticks to the old codings.
Its distribution for Italy is bimodal reflecting the contrast between lowlands (e.g., the Po plain) and hilly or mountainous terrain (e.g., the Alps, the Apennines).
The frequency distribution of curvature for Italy is an exaggerated version of the bimodal histogram found for slope reversal, again reflecting the influence of the Alps and Po plain landforms.
Provinces bounded by distinct morphological or geological limits (e.g., the Alps, the Apennines, the Northern Italian Plain) are better defined (Figure 4 and 5) than provinces partially circumscribed by a geographic boundary, such as the coast line (e.g., Sardinia, and partly Sicily).
Therefore, the provinces of Barletta-Andria-Trani, Fermo, and Monza e Brianza are defined as of 2004-06-11, the date the laws were passed.
Most of Coastland (Küstenland) province and the enclave of Zara in Dalmatia were annexed to Venezia region, becoming the provinces of Gorizia, Pola, and Trieste.
1954-10-25: Zone A of Free Territory of Trieste annexed to Italy as the province of Trieste.