Several non-postal websites offer change of address (COA) services. Some claim to offer a COA service with the Postal Service and some sites offer the service at no charge. Others charge customers fees ranging from $6.99 to $20.

USPS has no affiliation with the businesses that manage these websites. Customers who have been charged more than $1 for identity verification to change their address have submitted their applications and made those payments to these websites, not USPS.

Any customer who used one of these websites and is requesting a refund at a postal retail unit should be referred to the business that operates the website used.

USPS offers three ways for customers to submit COA orders:

• Use the Mover’s Guide, available at all Post Offices.
• Call 800-ASK-USPS to change an address using the Postal Service’s Call Center.
• Visit usps.com to make address changes online.

source: USPS