Design

Printed Postcard Specs: 4" x 6"

August 8, 2025
By:
Brandon
⏱️ 3 minutes

Overview

Our 4" x 6" printed postcards are the most affordable and widely accepted size for USPS First Class Mail, making them perfect for high-volume campaigns on a budget. Their compact size ensures your message is seen immediately — no envelope to open, just bold, full-color messaging on both sides.

Typical Use Cases:

  • Limited-Time Offers: Quick promos, discount codes, or flash sale alerts.
  • Event Reminders: Last-minute “Don’t forget!” mailers for fundraisers, community gatherings, or open houses.
  • Donor Thank-Yous: Short appreciation notes to acknowledge contributions and keep relationships warm.
  • Seasonal Greetings: Holiday or milestone cards to maintain regular touchpoints.
  • Local Awareness Campaigns: Neighborhood service announcements or grand opening invitations.

Design Dimensions

| Design Area | Dimensions | Notes | |-----------------|-------------|---------------------------------------| | Full Bleed Size | 4.2" x 6.2" | Extend background color/images to this size for borderless printing | | Trim Zone | 4" x 6" | Finished postcard size after cutting | | Safe Zone | 3.7" x 5.7" | Keep text/logos inside this area to prevent accidental trimming | | Address Block | 2.625" H × 4" W (front side) | Must remain clear for mailing address and postage |

Product Specs

| Specs | Details | |---------------------|--------------------------------------------------------------| | Paper Stock | Thick 100# Card Stock | | Printing | Full-color, both sides | | Personalization | Merge fields available for names, discount codes, custom messages | | Addressing and Mailing| Address block + indicia placement required on the front side | | Integration Support | Shopify, Klaviyo, Zapier, and more |

Quick Reference

  • Full Bleed Size: 4.2” x 6.2”
  • Trim Zone: 4” x 6”
  • Safe Zone: 3.7” x 5.7”

Download the Design Template

Click below to access the Canva template for this 4"x6" postcard. It includes pre-set trim zones, safe area guides, and address placement — so you can design confidently without starting from scratch.

👉 Download Template

Need Help?

Not sure how to format your postcard for print? Contact our team — we’ll make sure your design is USPS-compliant and looks amazing in mailboxes.

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