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Top rated mailbox locks

AI-generated summary · updated July 21, 2026 · verify details before purchase.

  1. S&G 1100 Heavy Duty Combination Padlock
    Best overall Master Lock

    S&G 1100 Heavy Duty Combination Padlock

    4.6/5 $21.92

    A robust, weather-resistant lock with a 5-digit combo, ideal for most residential mailboxes.

    • Durable hardened steel body
    • Weather-sealed shackle
    • Combination can wear over time
  2. Master Lock 5400D Waterproof Padlock
    Best budget pick Master Lock

    Master Lock 5400D Waterproof Padlock

    4.4/5 $14.99

    A low-cost, water-resistant padlock with a 4-digit combination that meets USPS requirements.

    • Affordable
    • Corrosion-resistant coating
    • Shackle not as thick as premium models
  3. Kwikset 913 4-Digit Combination Lock
    Best for renters Kwikset

    Kwikset 913 4-Digit Combination Lock

    4.3/5 $11.13

    A simple, easy-to-reset combination lock that fits most standard mailbox slots.

    • Easy to reset
    • Lightweight
    • Limited security level
  4. Schlage B660 Combination Padlock
    Best high-security pick SCHLAGE

    Schlage B660 Combination Padlock

    4.5/5 $46.27

    Features a hardened boron alloy shackle and a 4-digit combination, offering superior resistance to bolt-cutting.

    • Boron-hardened shackle
    • Precision combo dial
    • Higher price
  5. Fortress 3600G Heavy Duty Padlock
    Best for high-traffic mailboxes Master Lock

    Fortress 3600G Heavy Duty Padlock

    4.2/5 $20.05

    Heavy-duty lock with a large 5-digit combo, designed for frequent use and extreme weather.

    • Large combo for more combos
    • Stainless steel finish
    • Bulky size
  6. Lockwood 4011 Stainless Steel Padlock
    Best stainless-steel option LanuBe

    Lockwood 4011 Stainless Steel Padlock

    4.1/5 $25.99

    Stainless steel construction resists rust and corrosion, with a 4-digit combination suited for coastal areas.

    • Full stainless steel
    • Corrosion resistant
    • Combo dial can be stiff
  7. Yale YVL10 5-Digit Combination Padlock
    Best compact lock Hedume

    Yale YVL10 5-Digit Combination Padlock

    4.4/5 $14.99

    Compact 5-digit lock with a reinforced shackle, perfect for smaller mailboxes where space is limited.

    • Compact size
    • Reinforced shackle
    • Limited combo combinations

Buying advice

When choosing a mailbox lock, consider the lock’s material (hardened steel or stainless for durability), the required combination length (USPS minimum is 4 digits), weather resistance, and ease of resetting the combo. For high-traffic or exposed mailboxes, prioritize heavy-duty construction and corrosion-resistant finishes; for occasional residential use, a budget-friendly lock with adequate security will suffice.

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