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10 Best mailbox locks of 2026

Save up to 32% off

  • 1

    L-1172C National Mailbox Lock Replacement USPS-L-1172C National Mailbox Lock C9100, Compatible with CompX L-1172C NDCBU CBU Cluster Mailboxs, with 3 Keys -10 Packs
    AGUNION

    L-1172C National Mailbox Lock Replacement USPS-L-1172C National Mailbox Lock C9100, Compatible with CompX L-1172C NDCBU CBU Cluster Mailboxs, with 3 Keys -10 Packs

    9.8
    Exceptional
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  • 2

    Kenning 24 Sets Cabinet Locks with Keys for Secure Drawer Mailbox RV Storage Box Replacement Lock, Zinc Alloy(5/8'' Cylinder Length, 0.4'' Max Panel Thickness)
    Kenning

    Kenning 24 Sets Cabinet Locks with Keys for Secure Drawer Mailbox RV Storage Box Replacement Lock, Zinc Alloy(5/8'' Cylinder Length, 0.4'' Max Panel Thickness)

    9.5
    Excellent

  • 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)

    9.2
    Excellent
    Our Rating

  • 4

    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)

    9.1
    Excellent

  • 5

    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

    8.9
    Very Good
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  • 6

    Mailbox Lock Replacement with 4 Keys - Multipurpose Mail Box Locks Compatible with Almost All Brands - Universal Lock Pick Set - File Cabinet Lock - Easy to Install - Durable and Secure
    Yandino

    Mailbox Lock Replacement with 4 Keys - Multipurpose Mail Box Locks Compatible with Almost All Brands - Universal Lock Pick Set - File Cabinet Lock - Easy to Install - Durable and Secure

    8.7
    Very Good

  • 7

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

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

    • security:Key Lock
    • material:Metal
    • style:Modern
    • access:N/A
    • color:N/A
    8.4
    Good

  • 8

    Prime-Line S 4573 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 S 4573 Mailbox Lock – Replacement, Multipurpose Mailbox Lock for Several Brands – NA-14 Keyway, Opens Counter-Clockwise with 90º Rotation, Nickel Finish (1 Set)

    32% Off
    8.3
    Good

  • 9

    Prime-Line U 9940 Mailbox Lock – Replacement, Multipurpose Mailbox Lock for Several Brands – Brass Finish, ILCO 1003M Keyway, Opens Counter-Clockwise with 90º Rotation (1 Set)
    PRIME-LINE

    Prime-Line U 9940 Mailbox Lock – Replacement, Multipurpose Mailbox Lock for Several Brands – Brass Finish, ILCO 1003M Keyway, Opens Counter-Clockwise with 90º Rotation (1 Set)

    13% Off
    8.2
    Good

  • 10

    Prime-Line MP4530 National Keyway Mail Box Lock with 9 Cams and 5 Pin (Single Pack)
    PRIME-LINE

    Prime-Line MP4530 National Keyway Mail Box Lock with 9 Cams and 5 Pin (Single Pack)

    10% Off
    8.0
    Good