Postage rate chart for first class mail

Here is a current postage rate chart for First Class Mail in the United States:

Letters

• 1 oz (1 ounce) letter: $0.55
• 2 oz letter: $0.70
• 3 oz letter: $0.92
• 3.5 oz letter: $1.05

Large Envelopes (Flats)

• 1 oz flat: $0.55
• 2 oz flat: $0.70
• 3 oz flat: $0.92
• 3.5 oz flat: $1.05
• 6 oz flat: $1.15
• 9 oz flat: $1.25
• 12 oz flat: $1.35

Postcards

• Standard postcard: $0.35

International Mail

• 1 oz letter to Canada: $1.20
• 1 oz letter to Mexico: $1.20
• 1 oz letter to other countries: $1.30

Additional Services

• Certified Mail: $3.45 (plus postage)
• Return Receipt: $1.45 (plus postage)
• Priority Mail Express: $25.50 (plus additional fees)

Note: These rates are subject to change, so it's always a good idea to check the official USPS website for the most up-to-date information.

Also, keep in mind that these rates apply to standard First Class Mail. If you need to send a larger or heavier package, you may need to use a different service, such as Priority Mail or Parcel Post, which have different rates and requirements.