How an address is written in St. Pierre & Miquelon
The postal format table for St. Pierre & Miquelon — the order the lines go in, the parts its operator requires, what it calls them, and the words it prints on a box — and, separately, what this server actually holds for St. Pierre & Miquelon, so the page never implies a check it cannot run.
Live demo
POST /demo/address · no key needed
Response
Look up any address to see the full API response, straight from the live service. The country decides which format it is read against.
The order the lines go in
The parts are named rather than filled in: Spaw does not know an address in St. Pierre & Miquelon and will not invent one. This block is produced by the same function that rewrites a real address, so the line order, the capitals St. Pierre & Miquelon asks for and any text its operator prints on every envelope are the checker's own behaviour rather than a second description of it.
Organisation 12 STREET NAME Flat or unit Postal code TOWN OR CITY
No recipient line: nothing in the response is about a person, so the name the envelope carries is not part of what is checked.
| field | called here | required | capitals |
|---|---|---|---|
| organization | Organisation | optional | — |
| addressLine1 | Street name | required | yes |
| addressLine2 | Flat or unit | optional | — |
| locality | Town or city | required | yes |
| postalCode | Postal code | required | — |
No house-number rule is carried for St. Pierre & Miquelon, so the international default is used: the house number comes before the street name. The postal code is written before the town.
The postal code
St. Pierre & Miquelon postal codes are checked against the pattern below rather than a description of it, because the shape is too particular to summarise without losing a case.
pattern 9[78]5\d{2}
A national directory is installed for St. Pierre & Miquelon, so a postal code here is not only checked for shape but looked up: 1 codes from geonames-postal-codes, version 2026-09-17, of which 1 are live and 0 have been retired. A retired code is usually a real address with an out-of-date code rather than a typo, so it is scored rather than refused.
What St. Pierre & Miquelon calls an address that is not a front door
No box naming is carried for St. Pierre & Miquelon yet, so the international spellings below are what apply. That has one consequence worth knowing: an address here with none of them answers unknown rather than street, because without the operator's own words a missing marker proves nothing.
| address_type | written as |
|---|---|
| private_mailbox Private mailbox at a mail-receiving agency | PMB |
| po_box Post-office box | PO BOX, P O BOX, POST OFFICE BOX, POSTBOX |
| general_delivery Held at the counter for collection | POSTE RESTANTE, GENERAL DELIVERY |
What can be checked for a St. Pierre & Miquelon address
Read from the datasets this server holds right now, not written into the page. For most countries the answer is the written form and the postcode shape and nothing beyond them — in particular not the row people assume is always there. An address can be perfectly formed and still not exist, and where no register is installed nothing here will pretend to know which.
| check | for PM | what the answer means |
|---|---|---|
| Written form | yes | The address is split into St. Pierre & Miquelon's own parts and rewritten in the order above. A missing required part is named in one typed reason rather than a general failure. |
| postal code pattern | yes | Checked against the pattern the table carries for St. Pierre & Miquelon. A value that does not match answers invalid_postal_code. |
| postal code exists | yes | 1 codes from geonames-postal-codes, live and terminated ones apart, so a retired code reads as retired rather than as a typo. |
| Kind of delivery point | partly | No St. Pierre & Miquelon box naming is carried. The international spellings are still read, but an address with none of them answers address_type: unknown — not street, which would be a claim. |
| Street exists | yes | The address register carries every street its buildings stand on, so match_level answers street when the street is known and the building is not. |
| Building exists | yes | 25,519,974 addresses from fr-base-adresse-nationale. It covers part of the country, so a match answers exists: true and a miss still answers null. |
| Companies at the address | no | No open company register is installed for St. Pierre & Miquelon, so companies_registered answers null and no mail-drop conclusion is drawn from a count. |
| Known mailbox branch | no | No operator branch list covers St. Pierre & Miquelon, so is_mail_drop is never set from one here. |
| Post actually arrives | no | Not from this page, and not from open data in any country: whether post is delivered, and the vacant, residential and agency flags that go with it, are the postal service's own licensed product. Those fields answer deliverability_checked: false rather than a guess. |
Null means not evaluated, never no. How to read an address-existence answer sets out what a premise, street or postcode match proves, and what absence proves.
Other countries
address-formats 2026-09-05 · address-rules 2026-09-17 · fr-base-adresse-nationale 2026-09-12 · geonames-postal-codes 2026-09-17 · checked 2026-09-18
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