How much does a stamp cost in 2025
A Forever stamp on a standard first-class letter currently costs $0.66. This price, set by the U.S. Postal Service, applies to letters up to 1 ounce. For postcards, the cost is lower, typically $0.63 or less depending on size and destination. These rates update periodically with prior approvals, and additional ounces or special services increase the total postage required.
Postcard stamp amount basics
A postcard stamp covers the delivery of a single, standardized postcard within the United States. Current pricing for a postcard mailed domestically is often less than a First-Class letter, reflecting the lower weight and smaller size. Specific postcard rates depend on whether the card is machinable, its dimensions, and whether it includes extra services like registration or insurance. Understanding these details helps you avoid underpaying or overpaying at the counter or in a mailbox.
What defines a postcard
- Size: Minimum 3.5 x 5 inches; maximum 4.25 x 6.0 inches
- Thickness: Between 0.007 and 0.016 inches
- Weight: Up to 1 ounce for the baseline postcard rate
First-class letter vs postcard cost comparison
Comparing letters and postcards helps clarify why pricing structures differ. Letters offer more flexibility for enclosures, heavier content, and larger formats, while postcards provide a low-cost option for brief, one-sided communication. For both, meeting exact size and weight specifications helps you secure the published rate rather than facing additional charges at the post office.
| Item | Published rate (approx.) | Notes |
|---|---|---|
| First-class letter, 1 oz | $0.66 | Standard domestic letter |
| Postcard | $0.63 | Standard domestic postcard, machinable |
| Additional ounce (letter) | $0.24 | Cumulative for each extra ounce or fraction |
| Postcard non-machinable | varies | Higher if irregular size, square, or with die-cut shapes |
How to calculate total postage for postcards and letters
To determine the correct amount, start by confirming weight and dimensions. A single first-class letter up to 1 ounce requires one Forever stamp at the current $0.66 rate. If your letter is heavier, add $0.24 for each additional ounce or fraction thereof. For postcards, use the current postcard rate and add fees for extra services like insurance or certified mail. Always double-check the latest official rates to ensure accuracy before mailing.
Other common scenarios using stamps or postage
Calculations change when you send larger envelopes, international mail, or use special services. Each category has its own pricing rules, service options, and exceptions. Below are common cases and how they affect the total postage cost.
| Scenario | Metric | Estimate or range | Notes |
|---|---|---|---|
| International letter (1 oz) | Price | varies | Depends on destination, service type |
| Large envelope (1 oz) | Price | varies | Higher than letter rate for same weight |
| Postcard with insurance | Additional cost | varies | Adds coverage, requires extra postage |
| Priority Mail small flat | Price | varies | Fixed-price service for faster delivery |
History and notable trends in U.S. postage rates
U.S. postal rates have risen gradually over decades, reflecting operational costs and policy decisions. The introduction of the Forever stamp provided price stability for first-class mail: once purchased, it remains valid for a 1-ounce letter regardless of future rate increases. Postcard pricing has also changed, though typically at a slower pace than letter rates. Tracking these trends helps contextualize current postcard stamp amounts and plan for future changes.
Plan your mailing with confidence
Knowing the current first-class and postcard rates, how to weigh and size your mail, and when to add extra services ensures you pay the right amount every time. Whether you’re sending a simple message or an important notification, choosing the correct stamp or metered postage helps your mail arrive on time and within budget. Use this guide to confidently prepare and drop off outgoing mail.