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10 Best mailbox locks of 2025

Save up to 35% off
  • Best Choice

    1

    CompX National C9100 USPS-L-1172C Mailbox Lock (Clockwise) (10 Pack)
    Compx National

    CompX National C9100 USPS-L-1172C Mailbox Lock (Clockwise) (10 Pack)

    13% Off
    9.7
    Exceptional
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  • Value for Money

    2

    CompX USPS-L-1172C National Mailbox Lock C9100 (Lock with 3-Keys)
    COMPX NATIONAL

    CompX USPS-L-1172C National Mailbox Lock C9100 (Lock with 3-Keys)

    • security:Key Lock
    • material:Metal
    • style:Modern
    • access:N/A
    • color:N/A
    9.6
    Exceptional

  • 3

    Prime-Line S 4140 Mailbox Lock – Replacement, Multipurpose Mailbox Lock for Several Brands – ILCO 1003M Keyway, Opens Counter-Clockwise with 90º Rotation, Nickel Finish (1 Set)
    PRIME-LINE

    Prime-Line S 4140 Mailbox Lock – Replacement, Multipurpose Mailbox Lock for Several Brands – ILCO 1003M Keyway, Opens Counter-Clockwise with 90º Rotation, Nickel Finish (1 Set)

    9.3
    Excellent
    Our Rating

  • 4

    Prime-Line MP4945 Mail Box Lock, 5-Cam, 5-Pin, 13/16 In. Threaded, Counter-Clockwise (Single Pack)
    PRIME-LINE

    Prime-Line MP4945 Mail Box Lock, 5-Cam, 5-Pin, 13/16 In. Threaded, Counter-Clockwise (Single Pack)

    35% Off
    9.2
    Excellent

  • 5

    Prime-Line MP4946 Mailbox Lock, 1-9/16 In. Cam Reach, Diecast Construction, Nickel (Single Pack)
    PRIME-LINE

    Prime-Line MP4946 Mailbox Lock, 1-9/16 In. Cam Reach, Diecast Construction, Nickel (Single Pack)

    10% Off
    9.1
    Excellent
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  • 6

    Mailbox Lock Replacement - Universal Mailbox Locks with 4 Keys - Easy to Install Mail Box Lock and Key Set - Durable and Secure Lock Replacement with 4 Keys for Almost All Locking Mail Boxes
    VIXAVI

    Mailbox Lock Replacement - Universal Mailbox Locks with 4 Keys - Easy to Install Mail Box Lock and Key Set - Durable and Secure Lock Replacement with 4 Keys for Almost All Locking Mail Boxes

    9.0
    Excellent

  • 7

    Prime-Line MP4526 Mailbox Lock – Replacement, Multipurpose Mailbox Lock for Several Brands – NA-14 Keyway, Opens Clockwise with 90º Rotation, Nickel Finish (1 Set)
    PRIME-LINE

    Prime-Line MP4526 Mailbox Lock – Replacement, Multipurpose Mailbox Lock for Several Brands – NA-14 Keyway, Opens Clockwise with 90º Rotation, Nickel Finish (1 Set)

    8.9
    Very Good

  • 8

    2 PCS Mailbox Locks, Mailbox Lock 16 mm, Comes with 4 Different Lock Plates, Security Mailbox Lock, cam Lock, Lever Lock, Lever Lock for mailboxes, Cupboard Doors
    QBXMY7

    2 PCS Mailbox Locks, Mailbox Lock 16 mm, Comes with 4 Different Lock Plates, Security Mailbox Lock, cam Lock, Lever Lock, Lever Lock for mailboxes, Cupboard Doors

    8.7
    Very Good

  • 9

    Prime-Line MP4573 Mailbox Lock – Replacement, Multipurpose Mailbox Lock for Several Brands – NA-14 Keyway, Opens Counter-Clockwise with 90º Rotation, Nickel Finish (1 Set)
    PRIME-LINE

    Prime-Line MP4573 Mailbox Lock – Replacement, Multipurpose Mailbox Lock for Several Brands – NA-14 Keyway, Opens Counter-Clockwise with 90º Rotation, Nickel Finish (1 Set)

    8.6
    Very Good

  • 10

    Mailbox Lock Replacement with 2 Keys - Universal Fit for Post Office Boxes, ILCO 1003M Keyway, 90° Counter-Clockwise Rotation, Nickel Finish - Compatible with Most Brands (1-Pack)
    Xinxinlin

    Mailbox Lock Replacement with 2 Keys - Universal Fit for Post Office Boxes, ILCO 1003M Keyway, 90° Counter-Clockwise Rotation, Nickel Finish - Compatible with Most Brands (1-Pack)

    8.4
    Good