Countries · Italy

Italy: how to write an address

Address verification puts every address into the postal form of the country and checks it against the national address register: street, house number, postcode, coordinates. Here you'll find how to write an address there, what we check and three before-and-after examples.

Verify an address API documentation

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How address verification and duplicate detection work.

What an address looks like

House number·after the street (“Hauptstraße 5”)
Postcode·12345
City·in capitals, in its local name
Country·country line and ISO code, in the reader's language

The postcode (CAP) is the heart of the Italian address: in the big cities it changes from one street to the next and sometimes along the same street, by odd and even numbers or by stretches (“zoned CAP”), and a generic postcode like 20100 is not enough for delivery. In many municipalities a hamlet has no postcode of its own: it goes on the line above the address, and the locality stays the municipality. The province is written as a two-letter code after the municipality.

What we verify

Every municipality, the hamlets and their postal rules, the zone postcode in the big cities, the house number where the national register has it, the coordinates. The address comes out in the Italian postal standard, with the outcome beside it and every change declared.

Addresses: the whole country · postcodes: 100% · data as of 2 Nov 2026.

Street·exists in the municipality, written in full and in the register's spelling; abbreviations are expanded in the country's language
House number·exists on that street; if the street exists and the number does not, the outcome flags it
Postcode·confirmed or filled in by the register, in the country's format
Coordinates·latitude and longitude of the house number, with the precision declared
Autocomplete·the street completes as you type, from the register; the house number and the postcode come with the selection (API)
WooCommerce · PrestaShop·autocomplete at checkout and order verification with the plugins

ANNCSU © Agenzia delle Entrate; © ISTAT; ANPR © Ministero dell'Interno; Wikidata; © OpenStreetMap contributors · CC BY 4.0; CC0; ODbL

Before and after

Three addresses written the way people write them — abbreviated, without postcode, in lower case — and how they come out: public buildings and streets of the city centre, verified down to the house number.

p.zza palazzo di città 1, 10100 torino → Piazza Palazzo di Città 1
10122 TORINO TO postcode fixed · street written in full · coordinates of the house number · © OpenStreetMap contributors
via f. filzi 22, milano → Via Fabio Filzi 22
20124 MILANO MI postcode filled in · street written in full · coordinates of the house number
v. s. maria maggiore 6, 40121 BOLOGNA → Via Santa Maria Maggiore 6
40121 BOLOGNA BO street written in full · coordinates of the house number

With the API

The same endpoint as every country: country_code is enough. The response carries the address in postal form, the outcome with the changes, and where the register is in service the coordinates, the municipality code and the district. Everything in the API documentation.

curl -X POST https://www.radaraddress.com/api/v1/contact \
  -H 'Authorization: Bearer YOUR_TOKEN' \
  -H 'Content-Type: application/json' \
  -d '{"address":"p.zza palazzo di città 1","postcode":"10100","city":"torino"}'

Frequently asked questions

Do you also verify addresses that are in a file?

Yes. In batch jobs a column with the country is enough, or the country set for the whole file: every row comes back in the country's postal form, with the outcome beside it and, where the register is in service, verified down to the house number.

What happens if an address is not in the register?

The outcome flags it. If the street exists and the house number does not, it points to the house number; if the street is not found in the municipality, the address still comes out in the country's postal form, with the warning.

The other countries

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