Countries · Greece

Greece: how to write an address

Every address in the country comes back in the national postal form and is checked against the addresses in the available open sources: street, house number, postcode, coordinates. This country does not publish an open address register, so the check applies where the address is there. Here you find how an address is written 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·123 45; the country prefix in front (D-, F-, CH-) is removed
City·in capitals, in its local name
Country·country line and ISO code, in the reader's language

The house number follows the street (“Ερμού 15”); the street type is written only when the street is not an ordinary one (“Λεωφόρος”, “Πλατεία”), and many streets are named after a person in the genitive, often with the first name abbreviated (“Ελ. Βενιζέλου”). The postcode has five digits in two groups (“105 63”) and in cities it changes from one block to the next. Greece does not publish an address register: we check against the streets and numbers declared to the land registry and against OpenStreetMap, without claiming completeness.

What we verify

Addresses: from the addresses of registered property sales and from other sources, with no claim of completeness · postcodes: 13% · data as of 11 Oct 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

Πηγή δεδομένων: Ν.Π.Δ.Δ. ΕΛΛΗΝΙΚΟ ΚΤΗΜΑΤΟΛΟΓΙΟ; όρια και οικισμοί: ΕΛ.ΣΤΑΤ. (geodata.gov.gr); ταχυδρομικοί κώδικες: Δήμοι Θεσσαλονίκης, Πειραιά, Χαλανδρίου, Αμαρουσίου (CC BY 4.0), Δήμος Αθηναίων (ODbL 1.0); ονόματα οικισμών: Wikidata (CC0); © OpenStreetMap contributors · CC BY 4.0 (HVD); 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.

σταδίου 10, αθήνα → Σταδίου 10
105 64 ΑΘΗΝΑ postcode filled in · city in postal form · coordinates of the house number
ερμού 15, 10563 ΑΘΗΝΑ → Ερμού 15
105 63 ΑΘΗΝΑ coordinates of the house number
25ης αυγούστου 5, ηράκλειο → 25ης Αυγούστου 5
712 02 ΗΡΑΚΛΕΙΟ postcode filled in · city in postal form · 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":"σταδίου 10","city":"αθήνα","country_code":"GR"}'

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.

Where do the data come from?

From the addresses of residential property sales registered since 2010 (the PSRA's Residential Property Price Register, without coordinates), from the commercial premises of the Valuation Office (Tailte Éireann, CC BY 4.0, with Eircode and coordinates) and from OpenStreetMap (© OpenStreetMap contributors, ODbL): this country does not publish an open address register, and the three sources together do not replace one. Where they do not have the address, it comes out in the country's postal form without being declared wrong.

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