Italian Region Codes: Complete ISO 3166-2 Guide

Italy is divided into 20 regions and over 100 provinces, all with standardized ISO 3166-2 codes. These codes are used in address forms, shipping, tax calculations, and e-commerce applications serving the Italian market.

This page lists every Italian region, highlights key provinces, and shows how to work with them using @koshmoney/countries.

All 20 Italian Regions

Italy’s 20 regions are the primary administrative divisions. Five of them have special autonomous status (marked below).

Northern Regions

Code	Name	Capital	Autonomous
IT-21	Piemonte	Turin	No
IT-23	Val d’Aoste	Aosta	Yes
IT-25	Lombardia	Milan	No
IT-32	Trentino-Alto Adige	Trento	Yes
IT-34	Veneto	Venice	No
IT-36	Friuli-Venezia Giulia	Trieste	Yes
IT-42	Liguria	Genoa	No
IT-45	Emilia-Romagna	Bologna	No

Central Regions

Code	Name	Capital	Autonomous
IT-52	Toscana	Florence	No
IT-55	Umbria	Perugia	No
IT-57	Marche	Ancona	No
IT-62	Lazio	Rome	No

Southern Regions

Code	Name	Capital	Autonomous
IT-65	Abruzzo	L’Aquila	No
IT-67	Molise	Campobasso	No
IT-72	Campania	Naples	No
IT-75	Puglia	Bari	No
IT-77	Basilicata	Potenza	No
IT-78	Calabria	Catanzaro	No

Islands

Code	Name	Capital	Autonomous
IT-82	Sicilia	Palermo	Yes
IT-88	Sardegna	Cagliari	Yes

Key Provinces

Italy has over 100 provinces (type “Province” in ISO 3166-2). Here are the most commonly referenced:

Code	Province	Region
IT-RM	Roma	Lazio
IT-MI	Milano	Lombardia
IT-NA	Napoli	Campania
IT-TO	Torino	Piemonte
IT-FI	Firenze	Toscana
IT-BO	Bologna	Emilia-Romagna
IT-GE	Genova	Liguria
IT-VE	Venezia	Veneto
IT-PA	Palermo	Sicilia
IT-BA	Bari	Puglia
IT-CA	Cagliari	Sardegna
IT-BZ	Bolzano	Trentino-Alto Adige
IT-TN	Trento	Trentino-Alto Adige
IT-TS	Trieste	Friuli-Venezia Giulia

Understanding Italian Subdivision Codes

Italy uses two different code patterns:

Regions use 2-digit numeric codes:

Component	Example	Meaning
Country prefix	IT	Italy
Separator	-	Standard delimiter
Region number	62	Lazio
Full code	IT-62	Lazio, Italy

Provinces use 2-letter alphabetic codes:

Component	Example	Meaning
Country prefix	IT	Italy
Separator	-	Standard delimiter
Province code	RM	Roma
Full code	IT-RM	Roma (Province), Italy

[!NOTE] Region codes use non-contiguous numbers (21, 23, 25, 32, 34…) that reflect historical administrative numbering, not a sequential count.

Using Italian Codes in Code

Look Up a Subdivision


import { subdivision } from '@koshmoney/countries';
 
// Region
subdivision.whereCode('IT-25');
// { code: 'IT-25', name: 'Lombardia', type: 'Region', countryCode: 'IT' }
 
// Province
subdivision.whereCode('IT-MI');
// { code: 'IT-MI', name: 'Milano', type: 'Province', countryCode: 'IT' }

Get All Italian Subdivisions


import { subdivision } from '@koshmoney/countries';
 
const allIT = subdivision.forCountry('IT');
 
// Filter by type
const regions = allIT.filter(s => s.type === 'Region');
console.log(regions.length);  // 20
 
const provinces = allIT.filter(s => s.type === 'Province');
console.log(provinces.length);  // 100+

Validate a Code


import { subdivision } from '@koshmoney/countries';
 
subdivision.isValidCode('IT-25');    // true (Lombardia)
subdivision.isValidCode('IT-RM');    // true (Roma)
subdivision.isValidCode('IT-XX');    // false
 
subdivision.isValidRegion('IT', 'MI');  // true (Milano)

Tree-Shaking for Italian Data Only


import '@koshmoney/countries/subdivision/IT';
import { whereCode, forCountry } from '@koshmoney/countries/subdivision';
 
const lombardia = whereCode('IT-25');
const allIT = forCountry('IT');

Postal Code System

Italy uses a 5-digit postal code (CAP — Codice di Avviamento Postale). The first two digits indicate the province:

First Digits	Province / Area
00	Roma
10	Torino
20	Milano
30	Venezia, Padova
40	Bologna
50	Firenze
60	Ancona
70	Bari
80	Napoli
90	Palermo


import { postalCode } from '@koshmoney/countries';
 
postalCode.isValid('IT', '00100');  // true (Roma)
postalCode.isValid('IT', '20121');  // true (Milano)
postalCode.isValid('IT', '1234');   // false (only 4 digits)

EU Membership and Currency

Italy is a founding EU member and uses the Euro:


import { membership } from '@koshmoney/countries/membership';
import { currency } from '@koshmoney/countries/currency';
 
membership.getMemberships('IT');
// { EU: true, SEPA: true, EEA: true, Eurozone: true, Schengen: true }
 
currency.getCurrency('IT');
// { code: 'EUR', symbol: '\u20ac', name: 'Euro' }

Common Use Cases

Address Forms

Italian address forms require the province code (sigla provincia). This is the 2-letter ISO code:


import { subdivision } from '@koshmoney/countries';
 
const provinces = subdivision.forCountry('IT')
  .filter(s => s.type === 'Province');
 
const dropdown = provinces.map(p => ({
  label: `${p.name} (${p.code.split('-')[1]})`,
  value: p.code,
}));
// [{ label: 'Agrigento (AG)', value: 'IT-AG' }, ...]

E-Commerce and Codice Fiscale

The Italian tax code (Codice Fiscale) encodes the province of birth. Province codes from ISO 3166-2 align with the codes used in official documents:


import { subdivision } from '@koshmoney/countries';
 
function validateProvince(provinceCode: string): boolean {
  return subdivision.isValidCode(`IT-${provinceCode}`);
}
 
validateProvince('RM');  // true
validateProvince('XX');  // false

North/South Regional Analysis

Italian economic data is often analyzed by macro-region. Region codes help classify:


const northRegions = new Set(['IT-21', 'IT-23', 'IT-25', 'IT-32', 'IT-34', 'IT-36', 'IT-42', 'IT-45']);
const centralRegions = new Set(['IT-52', 'IT-55', 'IT-57', 'IT-62']);
const southRegions = new Set(['IT-65', 'IT-67', 'IT-72', 'IT-75', 'IT-77', 'IT-78', 'IT-82', 'IT-88']);
 
function getMacroRegion(regionCode: string): string {
  if (northRegions.has(regionCode)) return 'north';
  if (centralRegions.has(regionCode)) return 'central';
  if (southRegions.has(regionCode)) return 'south';
  return 'unknown';
}

Country Code Converter Tool — look up IT and all other codes
European Countries List — all countries in Europe
Eurozone Countries — all 20 Euro-using countries
French Region Codes — similar guide for France
Subdivision API Reference — full subdivision API documentation