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Credit Card Postal Code or ZIP Code: What Should You Enter?

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When shopping online or travelling abroad, you have probably been asked to enter a postal code or ZIP code. But what is the difference between these terms, and why do they matter for credit card transaction security?

In this article, we look at Canadian postal codes and U.S. ZIP codes, and explain their role in helping prevent fraud.

Understanding the difference between a credit card postal code and ZIP code

What is a credit card postal code?

Used in Canada, including by Canada Post, a postal code is a six-character combination of three letters and three numbers. For example, the postal code for Montréal’s Olympic Park is H1V 3N7. Every Canadian address is associated with a postal code, making mail easier to sort and deliver.

In addition, credit card issuers use your postal code as a security check.

What is a credit card ZIP code?

The United States uses ZIP codes, which are five-digit numbers. Perhaps the best-known example is 90210, associated with Beverly Hills, California.

Why do postal codes and ZIP codes matter for credit card transactions?

When making a purchase online or at a gas station, particularly in the United States, you may be asked to enter the postal code or ZIP code associated with your credit card.

This verification step helps confirm that the buyer is the legitimate cardholder. If someone has your card number but does not know the associated code, this check can make it harder for them to make a purchase.

Tips for Canadians travelling in the United States

This question often comes up on travel forums and in the Milesopedia Facebook group: Canadians can run into a problem when filling up at a U.S. gas station. After you insert your credit card into the pump’s card reader, the U.S. system may not accept the letters in a Canadian postal code.

The trick is to enter the three numbers from your Canadian postal code, followed by “00”. For example, if your postal code is H2J 2L1, enter 22100 as the ZIP code.

Credit card postal code and ZIP code: using a Canadian postal code at a U.S. gas pump

If adding “00” does not work, try another credit card you have with you. Carrying more than one credit card is especially useful when travelling. Consider one of the best credit cards for gas and transit, or a credit card with no foreign transaction fees (to save on the conversion fees charged on top of the exchange rate).

You can also go inside the gas station and ask the attendant to help you pay with your credit card.

Frequently asked questions about credit card postal codes and ZIP codes

Where can I find my credit card ZIP code?

To find the postal code or ZIP code associated with your credit card, check your billing address in your online banking account or on your credit card statement.

Do Canadian credit cards have a ZIP code?

Canada uses postal codes. However, the similar terms can cause confusion.

The postal code associated with a Canadian credit card consists of six characters, alternating letters and numbers.

Why do some websites reject my postal code or ZIP code?

There can be several reasons: the website may not ship to your area, you may have entered the code incorrectly, or the website may be using an outdated database.

Can I use a postal code or ZIP code to find an area on a map?

Yes. Most online mapping services let you find an area or a specific address using a postal code or ZIP code.

Is it safe to enter my postal code or ZIP code online?

Providing your postal code or ZIP code on a secure, trusted website generally carries little risk. However, avoid sharing other sensitive information, such as your credit card number, unless it is necessary.

Do the letters and numbers in postal codes have a meaning?

Yes. Postal codes are often structured to reflect specific regions, delivery routes or other geographic information. In Canada, for example, the letters can identify a geographic area, while the numbers help identify a more specific area within it.

Annual fee
$191.88
Our valuation
$255

Milesopedia first-year estimateFirst-year valueWelcome bonus$255Total$255Rewards on your spending are not included. The calculator that adds them from your own profile is on the card's page.

Welcome offer
Up to 15,000 points
Apply Now

on American Express's website

Apply with confidence — no impact on your credit scoreApply with confidenceCheck whether your application will be approved before you submit it, with no impact on your credit score*When you apply for a personal American Express Credit Card, we will tell you whether you are eligible without affecting your credit score. So you can apply with confidence.*Instant decisions are only available for consumer Card applications (also called “personal Cards”).

The American Express Cobalt® Card is the best credit card from American Express, whether you want points for travel or cash back.

American Express Cobalt® Card welcome offer

The welcome bonus is paid out monthly over your first 12 months. You earn 1,250 Membership Rewards points for each monthly billing period in which you charge $750 in net purchases to your card, in any category (1X, 2X, 3X or 5X). That adds up to 15,000 Membership Rewards points over the year, a welcome offer we value at $255.

Earning the full bonus means $9,000 in net purchases spread across 12 monthly billing periods. This offer rewards steady monthly spending rather than one large purchase.

You can use these points as statement credits on everyday or travel purchases, at the same rate either way: 1,000 points = $10.

You can also transfer them to Aeroplan, Avios (British Airways and Qatar Airways), Flying Blue, Marriott Bonvoy or Hilton Honors. With the full welcome bonus, that is a choice between:

  • 15,000 Aeroplan points
  • 15,000 Avios points
  • 15,000 Flying Blue Miles
  • 18,000 Marriott Bonvoy points

If hotel points are what you are after, our ultimate guide to Marriott Bonvoy and our complete map of Marriott Bonvoy hotels by category show what those points can actually buy.

American Express Cobalt® Card benefits

Here is what the card gives you, starting with the benefits cardholders use most.

  • 5X points on eligible eats and drinks in Canada: groceries, restaurants and bars, home food delivery and convenience stores. A spend cap applies.
  • 3X points on eligible streaming subscriptions in Canada.
  • 2X points on eligible gas, public transit and ride sharing purchases in Canada.
  • 1 additional point on eligible hotel and car rental bookings made through American Express Travel Online.
  • 1X point per dollar on everything else, with no category restrictions.
  • Points that hold the same value either way: 1,000 points = $10 as a statement credit, or a 1:1 transfer to several airline and hotel loyalty programs.
  • No minimum income requirement, as with every American Express Canada card.
  • Additional cards at no extra cost: the first and every other supplementary card is $0.
  • The Hotel Collection: a room upgrade when available, 12pm check-in and late check-out when available, and up to $100 USD in hotel credit on amenities charged to the room for a stay of two or more consecutive nights, booked through American Express Travel.
  • Front Of The Line® presale and reserved tickets for concerts and theatre performances, plus offers and events curated for cardmembers through Amex Experiences.
  • A soft credit check before you apply: you can see whether you will be approved with no impact to your credit score. This applies to American Express personal card applications.

To see how it compares with the rest of the line-up, read our round-up of the best credit cards from American Express in Canada.

The 5X categories and where they apply

The 5X rate is the reason most people carry this card. In Canada it covers four kinds of merchants:

  • Groceries: Metro, IGA, Sobeys, Super C, Safeway, Whole Foods.
  • Restaurants and bars: sit-down meals, takeout and drinks.
  • Home food delivery.
  • Convenience stores: Couche-Tard, 7-Eleven.

The 2X rate covers gas stations such as Esso, Shell and Petro-Canada, along with public transit and ride sharing.

With the American Express Cobalt® Card, you earn between 1 and 5 points per dollar:

Category Points per dollar
Grocery (Metro, IGA, Sobeys, Super C, etc.) 5
Home food delivery 5
Restaurants and bars 5
Convenience stores 5
Streaming services 3
Service station 2
Transport 2
Travel 1
Other 1

That works out to a 1 to 5% return on those purchases. For example, if you spend $1,000 per month across groceries, restaurants and food delivery, you earn $50 back per month, or $600 per year from that category alone. Transfer the points to a program such as Aeroplan instead and the return can be higher.

You can also stack these categories with the hundreds of stores that offer 5x points.

American Express Cobalt® Card insurance coverage

The card comes with a broad insurance package. The amounts below are the coverage limits; conditions, age limits and exclusions are set out in the certificate of insurance linked in the Insurance section above.

Travel insurance

  • Emergency medical: up to $5,000,000 for the first 15 days of a trip.
  • Travel accident: accidental death and dismemberment of up to $250,000 for you, your spouse and dependent children under age 23 when travelling on a common carrier (plane, train, bus or ship) and the tickets are charged to your card. Supplementary cardholders and their families are covered too.
  • Flight delay: up to $500 for necessary hotel, meal and sundry expenses bought within 48 hours when you are delayed or denied boarding for four hours or more and no other transportation is available. This $500 is an aggregate limit per occurrence, shared with missed connection and delayed baggage coverage.
  • Delayed baggage: up to $500 for essential clothing and sundries bought within four days when your outbound luggage is delayed six hours or more. This $500 is an aggregate limit per occurrence, shared with missed connection and flight delay coverage.
  • Lost or stolen baggage: up to $500 per occurrence for all insured persons combined, for checked or carry-on baggage and personal effects in transit, when the airline tickets are charged to your card. Within that limit, jewellery is capped at $300 per occurrence and golf clubs, including golf bags, at $250 per occurrence.
  • Hotel and motel burglary: up to $500 against the loss of most personal items if your hotel or motel is burglarized, when the stay is charged to your card.

Rental car insurance

Theft and damage coverage is included for a rental car with an MSRP, for its model year, of up to $85,000 excluding all taxes, for rentals of up to 48 days. To use it, decline the Loss Damage Waiver (LDW) or any similar option from the rental company and charge the full rental to your card. There is no cost for this coverage, and it replaces the daily insurance the rental company charges, usually $16 to $23 per day.

Mobile device insurance

Your device is covered for up to $1,000 per occurrence when it is charged to the card, for up to two years from the date of purchase. The payout is based on the depreciated value of the device, which falls by 2% of the purchase price for every completed month, less a 10% deductible. Theft and accidental damage coverage starts on the 91st day after purchase, because the first 90 days are covered by purchase protection.

Purchase protection and extended warranty

Eligible items charged to your card are insured against accidental physical damage or theft for 90 days from the purchase date, up to $1,000 per occurrence for all items combined. The card also extends the original manufacturer’s warranty by up to one additional year on eligible items, with indemnification limited to $10,000 per insured item and $25,000 per Cardmember per policy year for all items combined.

American Express Cobalt® Card fees

  • Card fee: $15.99 per month, which equals $191.88 per year, for residents outside Quebec. Quebec residents are billed $191.88 per year.
  • Additional cards: $0.
  • Purchase interest rate: 21.99%.
  • Cash advance interest rate: 21.99%.
  • Foreign transaction fee: 2.5%.
  • Minimum income required: none.

Because the fee is billed monthly rather than in one annual charge, you can stop and restart the cost in step with how much you are actually using the card.

Annual fee

Primary card$191.88
Additional card$0

Annual income required

Individual$0
Household$0

Conversion fees

2.5%

Earning rate

  • 5xRestaurants
  • 5xGroceries
  • 5xConvenience
  • 3xStreaming
  • 2xTransit
  • 2xGas & EV
  • 1xAll spending

Value

1st Year Value$1,828
2nd Year Value$799

Transfer partners

  • AeroplanAirline
  • British Airways ClubAirline
  • Cathay Asia MilesAirline
  • Etihad GuestAirline
  • Flying BlueAirline
  • Hilton HonorsHotel
  • Marriott BonvoyHotel

Travel insurance

Travel medical (under 55)Up to $5,000,000 / 15 days
Travel medical (55-64)Up to $5,000,000 / 15 days
Delayed BaggageUp to $500
Lost BaggageUp to $500
Flight DelayUp to $500
Hotel BurglaryUp to $500
Travel AccidentUp to $250,000

Purchase protection

Purchase ProtectionUp to $1,000 / 90 days
Extended Warranty+1 years
Mobile DeviceUp to $1,000 / 2 years
Auto Rental Collision (primary)Up to $85,000 / 48 days

Our featured card

Featured
Annual fee
$120
Our valuation
$990

Milesopedia first-year estimateFirst-year valueWelcome bonus$990Total$990Rewards on your spending are not included. The calculator that adds them from your own profile is on the card's page.

Welcome offer
Up to 110,000 points

Ends Sep 22, 2026

Apply Now

on American Express's website

Apply with confidence — no impact on your credit scoreApply with confidenceCheck whether your application will be approved before you submit it, with no impact on your credit score*When you apply for a personal American Express Credit Card, we will tell you whether you are eligible without affecting your credit score. So you can apply with confidence.*Instant decisions are only available for consumer Card applications (also called “personal Cards”).

The Marriott Bonvoy® American Express®* Card is the best credit card in Canada for free hotel nights.

New Cardmembers can earn up to 110,000 Marriott Bonvoy® points with the current offer:

  • Earn 80,000 points after you spend $6,000 on your Card in your first 6 months of Cardmembership.
  • Plus, earn 30,000 points by making a purchase during your 15th month of Cardmembership.

This offer ends on September 22, 2026. The annual fee is $120, and there is no annual fee on Additional Cards, so you can add a partner or a family member at no extra cost.

Every year after your first Card anniversary, you receive an Annual Free Night Award good for a redemption of up to 35,000 points at eligible hotels and resorts worldwide. At a valuation of 0.9 cents per Marriott Bonvoy point, that certificate is worth roughly $315, which on its own more than covers the $120 annual fee. That is the main reason to keep this Card year after year instead of cancelling it.

To get the most out of the certificate, aim it at a night that would otherwise price close to the 35,000 point ceiling.

The Card also gives you 15 Elite Night Credits each calendar year and automatic Marriott Bonvoy Silver Elite status. Those credits count toward the next Elite tier, so you begin every year 15 nights ahead of where you would otherwise start.

You move up to Gold Elite status automatically when you reach $30,000 in purchases on the Card in a year, or when you combine 10 qualifying paid nights within one calendar year with the 15 Elite Night Credits from your Card.

Marriott Bonvoy points are generally valued at 0.9 cents each. On that basis, the 110,000 point welcome offer is worth about $990, and an Annual Free Night Award used at its full 35,000 point ceiling is worth about $315.

Marriott Bonvoy points pull their weight on free nights rather than on gift cards or merchandise, which is why this Card should be judged on the hotel stays it produces.

You earn 5 points per dollar on eligible purchases at participating Marriott Bonvoy hotels and 2 points per dollar on all other purchases. Points can be redeemed for free nights with no blackout dates at more than 7,000 hotels around the world.

The Card carries a solid package of coverages: $500,000 travel accident insurance, flight delay, baggage delay, lost or stolen baggage and hotel or motel burglary at $500 each, car rental theft and damage up to $85,000 for rentals of up to 48 days, Purchase Protection for 90 days and a one year Extended Warranty.

Two things to plan around: the 2.5% foreign transaction fee on purchases made in a foreign currency, and the 21.99% purchase interest rate, which makes this a Card to pay in full every month. Like all American Express Canada Cards, no minimum income is published for this Card, and you can see whether you would be approved before you apply, with no impact on your credit score.

Annual fee

Primary card$120
Additional card$0

Annual income required

Individual$0
Household$0

Conversion fees

2.5%

Earning rate

  • 5xMarriott Bonvoy hotels
  • 2xAll spending

Value

1st Year Value$1,437
2nd Year Value$312

Travel insurance

Delayed BaggageUp to $500
Lost BaggageUp to $500
Flight DelayUp to $500
Hotel BurglaryUp to $500
Travel AccidentUp to $500,000

Purchase protection

Purchase ProtectionIncluded
Extended Warranty+1 years
Auto Rental Collision (primary)Up to $85,000 / 48 days

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