A zip code (short for “Zone Improvement Plan” code) is a series of numbers used to identify a specific geographic area for mail delivery. In the United States, zip codes are five digits long. Other countries use similar systems under different names: postal codes in the UK and Canada, PIN codes in India, and postcodes in Australia.

If you’ve come across a “zip code” field while signing up for an international platform, filling out a payment form, or creating a foreign bank account, you’re not alone. Most Nigerians run into this when a form asks for a US-style zip code and they’re not sure what to enter.

They’re essentially the same thing. “Zip code” is the term used in the United States. “Postal code” is the broader international term. The UK uses “postcodes” (e.g., SW1A 1AA), Canada uses alphanumeric postal codes (e.g., M5V 2T6), and India uses six-digit PIN codes.

Nigeria does not use a nationwide zip code system in the same way the US does, which is why this field causes confusion on international forms. Some Nigerian addresses have local postal codes assigned by NIPOST, but they are rarely used in everyday transactions.

Most international platforms, payment processors, and financial services were built with US or European address systems in mind. When you sign up for services like PayPal, Payoneer, Upwork, Fiverr, or even create a foreign bank account, the form usually requires a zip code as part of address verification.

This is also common when:

If the form requires a US zip code specifically (for example, when setting up a US dollar account or virtual card), you’ll typically need to use the zip code associated with the account address provided to you by the service.

If a platform provides you with a US-based account address, the zip code will be part of that address. Here are some US zip codes you may encounter frequently:

When you open a Grey USD account, your account details include a US routing number and account number. If a form asks for a zip code alongside those details, use the zip code associated with the address Grey provides in your account information.

If you need to look up a zip code for a specific US address, you can use the USPS Zip Code Lookup tool. Just enter the city and state, and it will return the correct zip code.

For other countries:

When you create a Grey account and open a USD, GBP, or EUR wallet, Grey provides you with dedicated account details for receiving international payments. If any external platform or form asks for a zip code to go with your Grey account details, use the zip code that matches the address shown in your Grey account information.

Not sure where to find it? Open the Grey app, go to your USD wallet, and tap on your account details. The full address, including the zip code, is displayed there.

If you don’t have a Grey account yet, you can create one here and get your own USD, GBP, and EUR account details in minutes. You can also check the fees and charges before signing up.

What is the meaning of a zip code?

A zip code is a numeric code used in the United States to identify a specific area for mail delivery and address verification. It stands for “Zone Improvement Plan.” Other countries use similar systems called postal codes or postcodes.

Does Nigeria have zip codes?

Nigeria does not use zip codes in the US sense. Nigeria has a postal code system managed by NIPOST, but it is not widely used. When international forms require a zip code, they are typically asking for a US or UK postal code associated with your account address, not a Nigerian one. You can get a US account address by signing up on Grey.

What zip code do I use for my Grey account?

Use the zip code shown in your Grey account details. Open the Grey app, navigate to your wallet, and check the account information section for the full address, including zip code.

What is the difference between a zip code and a postal code?

They serve the same purpose. “Zip code” is the US term, while “postal code” is used internationally. Both identify a geographic area for mail delivery and address verification.