2018 U.S. Postage Stamp Rates and Prices
In 2018, the cost of a U.S. postage stamp reflected a mix of long‑standing rate structures and adjustments to cover rising operational costs. A First‑Class Forever stamp cost 55 cents, up from 50 cents in 2017, while postcard rates remained at 35 cents. Additional options included extra ounce charges, two‑ounce First‑Class rates, and limited‑edition commemorative stamps. This guide explains which rates applied in 2018, how the Postal Service set prices, and how you can identify and use stamps from that year.
Key 2018 Postage Stamp Rates
The following table summarizes the most common U.S. Postal Service rates in effect for 2018. These are retail (post office) prices; paid rates via online vendors or meters may differ slightly.
| Service Type | Denomination / Price | Details |
|---|---|---|
| First‑Class Letter (1 oz) | $0.55 | Forever stamp price; effective Jan 7, 2018 |
| Postcard | $0.35 | Image side must measure 3.5"–6" x 5"–11.5" |
| First‑Class Additional Ounce | $0.20 | Each extra ounce up to 3.5 oz |
| First‑Class 2‑Ounce | $0.70 | Covers letters up to 2 oz |
| Non‑Machinable Surcharge | $0.30 | Applied to irregularly shaped or thick letters |
| Priority Mail 1‑lb Flat | $5.70–$6.10 | Zone‑dependent; includes tracking |
| Retail Rate Source | Post Office window or counter | Prices shown above reflect published 2018 retail rates |
Price Trends Leading to 2018
Postal pricing in the late 2010s followed a pattern of gradual increases intended to offset rising costs such as labor, transportation, and facilities. In 2014, the Forever stamp rose to 49 cents; in 2017 it increased to 50 cents. The change to 55 cents in January 2018 continued this trend and aligned with an overall USPS pricing adjustment that also affected packages and commercial mail prices.
Effective Dates and Implementation
- Jan 1, 2018: New USPS retail price rules take effect.
- Jan 7, 2018: Forever stamp price changes to 55 cents.
- Mid‑2018: Some limited‑edition and coil stamps issued at existing rates.
Types of Stamps Available in 2018
In addition to standard First‑Class Forever stamps, the USPS offered several options in 2018:
- Forever Stamps: Denominated "Forever"; valid for any first‑class letter regardless of future price increases.
- Definitive Stamps: Regular stamps with standard subjects (flags, eagles) issued in booklets, coils, and sheets.
- Commemorative Stamps: Themed issues honoring events or figures; typically sold at first‑class rate but sometimes with a surcharge.
- Postcard Stamps: Sold in booklets and sometimes at self‑service kiosks; 35 cents for standard sized postcards.
Where to Buy and How to Verify
In 2018, stamps were sold at post offices, many retail stores, and online via usps.com. Self‑service kiosks at post offices often offered coils and booklets at metered rates. To verify authenticity and value:
- Check the denomination line (e.g., "Forever" or a cent value).
- Inspect the year of issue, which may appear in small print near the bottom or on the pane label.
- Compare expected prices with USPS rate charts or announcements from the Postal Service.
Frequently Asked Questions
Understanding common questions helps clarify how 2018 stamp prices worked and how they were used.
- Did prices change mid‑year? The primary adjustment to 55 cents occurred in January. No further retail increases were scheduled for the remainder of 2018.
- Can old 2018 stamps still be used? Yes; Forever stamps and valid definitive stamps remain usable for current first‑class prices, regardless of when they were issued.
- How were postcard and letter rates determined? USPS sets rates based on a formula that considers delivery costs, revenue targets, and regulatory constraints; in 2018 this resulted in 35 cents for postcards and 55 cents for the first ounce of a letter.
Summary and Takeaways
In 2018, a First‑Class Forever stamp cost 55 cents, postcards were 35 cents, and additional ounce fees were 20 cents each. Prices reflected ongoing adjustments to operational costs and were set through a formal USPS rate‑making process. Forever stamps purchased that year remain valid for first‑class mail today, making them a flexible option for consumers and collectors alike.