Mailbox Locks and Keys for USPS, Interior & Exterior Mailboxes

EasyKeys.com offers one of the widest selections of USPS mailbox locks and replacement mailbox keys for both interior and exterior applications. Our inventory includes high-quality mailbox cam locks, USPS-approved replacement locks, and key blanks from trusted manufacturers such as CompX National, CCL Security Products, ESP/Hudson Lock, and WIND Hardware & Engineering—brands known for reliable security and long-lasting performance.

Whether you're replacing a lost mailbox key, upgrading a worn or damaged lock, or securing a brand-new mailbox, EasyKeys.com makes it simple to find the exact match. Our selection includes popular USPS-style cam locks, multi-application mailbox locks, and keyed-alike options for property managers or multi-unit buildings. Many locks on this page also include replacement key codes, helping you quickly identify the correct key for your existing mailbox hardware.

Not sure which mailbox lock or key you need? Our team is here to help you choose the right option with confidence, ensuring smooth installation and dependable daily use.