Localizador de códigos postais

Postal codes don't work the same way everywhere. Some countries use a mix of letters and numbers, some use numbers only, and some have no postal-code system at all. Keep that in mind when interpreting your result: a "no match" isn't always an error — it may simply mean the country you searched doesn't assign postal codes.

Stacks of airmail envelopes with stamps and postmarks — Photo: Ann H / Pexels.

Online Postcode and Postal Code Finder Tool

The search field above is a self-service online postcode finder. You type an address detail, and the tool matches it against CodeReff's reference database of postcodes, zip codes, and PIN codes, then returns the closest match. There is no sign-up, no quote request, and no download — the search runs directly on this page and is free to use.

Because the input is free text, you can search at the level you already have. A full address gives the tightest match, but a town and country is usually enough to return something usable. The tool is built for two practical jobs: filling a gap in a form you're completing, and confirming a code before you commit to sending something.

Postal codes are national systems, not a global standard. The UK, Germany, and Canada use alphanumeric postcodes; the United States uses numeric ZIP codes (usually five digits, sometimes with a four-digit extension); India uses a six-digit PIN code. A handful of countries assign no postal codes at all, so a search there returns nothing — that is the correct result, not a failure of the tool.

Use it as a fast reference check. If a wrong code carries legal or financial consequences — customs paperwork, a contract address, a regulated shipment — confirm the result against the relevant national postal operator before you rely on it.

Check or Verify a Post Code Online Right Now

To check a postcode now, enter the address it belongs to — street, town, region, or country — into the field above and review what comes back. More detail narrows the match; less detail widens it. If you already have a code and want to sanity-check it, search the address separately and compare the two values rather than typing the code itself.

An empty result almost always means one of three things:

The address was incomplete or spelled with a local variant the database doesn't hold.
The country doesn't operate a postal-code system, so nothing exists to return.
The code has been restructured since the record was last updated.

Before you trust a match, check two basics. First, does the result sit in the country and region you searched? Second, does its shape match that country's format — letters and numbers for a UK postcode, five digits for a US ZIP, six digits for an Indian PIN? A valid-looking code in the wrong format is a sign you should search again.

Verification here is a reference check, not an authoritative confirmation. Carriers and postal operators hold the definitive record, and their boundary changes filter down to third-party databases on a delay.

Find My Postcode by Entering a Full Address

A full address is the most reliable input, because each line removes candidate matches. Enter it top-down in the order you'd write it on an envelope: street and number first, then the town or city, then the region or state, and finally the country. Adding the country matters when the same town name exists in several places.

Accuracy depends on matching local conventions. If the street is officially "Bahnhofstraße" and you type "Bahnhofstrasse", a strict match may miss — so try the local spelling before assuming there's no result. Official abbreviations, accents, and house-number suffixes (3A, 12B, Unit 4) all affect the outcome. If a full address returns nothing, drop back to street and town only, then to town and country: broader searches succeed where specific ones fail.

The habit worth building is checking rather than guessing. A wrong postcode in a personal form is an annoyance; on a shipping label it becomes a misrouted parcel, and the delay usually costs more than the seconds the lookup takes.

What Is My Postcode Based on My Home Address?

Your postcode is assigned to your address by your national postal operator, not chosen by you. It identifies the delivery area your home sits in, and its structure depends entirely on where you live.

In the United Kingdom, a postcode is alphanumeric and splits into two parts: an outward code naming the postal area and district, and an inward code narrowing it to a sector and unit — roughly a small group of addresses. Royal Mail introduced the first London postal districts in 1857 and rolled the modern system out nationally between 1959 and 1974 to support automated sorting.

In the United States, the ZIP code is numeric, normally five digits, with an optional four-digit extension for a more precise delivery point. In India, the PIN code is six digits, where the first digit marks the region and the following digits narrow it to district and delivery office. Other countries follow their own logic: some are purely numeric, some mix letters and digits, and some assign none at all.

To find yours, search your home address above. If you're unsure whether your country uses codes at all, browse the country directory linked at the end of this page.

Which Site Can Accurately Look Up a Postcode or Area Code?

No independent comparison of postcode lookup sites currently exists, so no site can fairly claim to be the most accurate. What you can assess is the source behind the result. The most reliable answer for any country comes from its own postal operator — Royal Mail for UK postcodes, USPS for US ZIP codes, India Post for PIN codes — because they publish the authoritative list and the boundary changes.

Reference sites like CodeReff are useful when you need a quick answer without navigating a national operator's own interface, or when you're working across several countries at once. Judge any site you use on four things: does it name where its data comes from, does it say how often that data is refreshed, does it state what it doesn't cover, and does it tell you when to escalate to the official source.

Postcodes and area codes are different systems and need different tools. A postcode or ZIP code maps a physical delivery address for mail; an area code maps a telephone numbering region for calls. CodeReff keeps them separate — use the search above for postal codes, and the dedicated area code lookup for dialling codes.

Scattered envelopes and postcards with postage signs — Postal codes and telephone area codes are separate systems — one routes mail, the other routes calls. Photo: craveiro_ pics / Pexels.

Postcode Finder FAQ

Enter your address into the search field above — street, town, region, or country. The tool returns the postcode, zip code, or PIN code that matches what you provide.

They're the same idea with different names. Both identify a specific delivery area to help sort and route mail. "Postcode" is used in the UK and many other countries; "zip code" is the US-specific term.

Yes — it's available at no cost as part of CodeReff's reference-data platform.

Coverage varies by country, and some countries don't use postal codes at all, so no result will exist for those regardless of the address entered. If you need an authoritative answer, confirm against that country's national postal operator.

No — the search above is for postal codes only. Area codes are a separate telephone numbering system. Use the dedicated area code lookup for dialling codes.

Usually one of three reasons: the address was incomplete, the country doesn't use a postal-code system, or the code has changed since it was last recorded. Try again with less detail, such as just the town and country.

This page is built primarily for finding a postcode from an address. If you already have a code and want to confirm it, search the same address and compare the result.

Explore Further

Browse postal codes by country instead of searching one address, look up a telephone area code, or check a banking identifier such as a SWIFT code or IBAN.