Top 10 Mailbox with Lock – Post-Mount Mailboxes

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1. Mail Boss


Mail Boss 7506 Mail Manager Curbside Locking Security Mailbox, Black,Large

Mail Boss #ad - Patented: includes patented anti-pry latch lock mechanism to prevent leveraged entry with a screwdriver & high security anti-drill, anti-pick 12-disc wafer lock.

Security: innovative baffle door accepts small parcels, packages, and a box of checks and also deters fishing. Quality: 14- and 16-gauge galvanized welded steel construction defends against vandalism. Accessories: includes concealed outgoing mail clip, 3 keys, and required installation hardware. Usps approved full-service residential locking security mailbox prevents mail-identity theft; Stainless steel hinges for ease of use. Does not include or require Mounting Plate.
BrandMail Boss #ad
ManufacturerMail Boss #ad
Height11 Inches
Length21 Inches
Weight22 Pounds
Width10 Inches
Part Number7506
WarrantyLimited Lifetime



White, Architectural Mailboxes Oasis Classic Large High Security Parcel Mailbox

ARCHITECTURAL MAILBOXES #ad - 18-inch d x 15-inch h x 11. 5-inch w, 23-pound - use adapter Plate 7530-10 for 4x4 wood post installation. Body constructed of heavy 16 and 18 gauge galvanized steel fully powder coated prior to assembly for durability and long life.

Postmaster general approved and patented design allows delivery of mail bundles and small parcels - perfect for Internet and catalog shoppers. Doors include rubber seals to keep deliveries clean and dry - all hardware made from stainless steel and other corrosion resistant materials. Suitable for installation into a pilaster or column - the entire outer shroud is one piece to resist moisture and the elements.
ManufacturerArchitectural Mailboxes #ad
Height15 Inches
Length18 Inches
Weight26 Pounds
Width11.5 Inches
Part Number6200W
WarrantyLimited Lifetime Warranty

3. Mail Boss


For Use with Mailbox, 43 x 4 x 4 inches, Black In-Ground Mounting Post, Mail Boss 7121

Mail Boss #ad - Accepts all mail Boss brand Locking Security Mailboxes. Can be used with a wooden post for deep in-ground installations. Includes 4 mounting bolts and clear instructions. Features durable powder-coated finish. Post made of heavy-duty 10- and 14-gauge electrogalvanized steel.
BrandMail Boss #ad
ManufacturerMail Boss #ad
Height25 Inches
Length5.37 Inches
Weight0.01 Pounds
Width14.43 Inches
Part Number7121
WarrantyLimited Lifetime Warranty Against Manufacturer Defects



ARCHITECTURAL MAILBOXES 5105Z Oasis In-ground Post, Graphite Bronze

ARCHITECTURAL MAILBOXES #ad - Compatible with all Oasis« Mailboxes. 46. 5" h x 12" d x 6" w, 29 lb. Model number: 5105Z. Designed for in-ground installation.
ManufacturerArchitectural Mailboxes #ad
Height12 Inches
Length46.5 Inches
Weight24 Pounds
Width6 Inches
Part Number5105Z
Warranty1 year manufacturer limited warranty

5. Keter


One Size, Brown, KETER Delivery Box for Porch with Lockable Secure Storage Compartment to Keep Packages Safe

Keter #ad - D x 44 in. 9 in. Easy assembly: please find assembly instructions below Product Information and under Technical Specifications. 1 way, 2 tray system: ensures that packages can be placed in the box without access to the storage compartment and only the owner can retrieve packages when using a lock.

Dimensions: exterior: 20 Lockable: padlock compatible so only you can open and retrieve your packages. Porch pirate proof: add weight to the bottom hidden chamber or use the included screws to anchor it into the ground for ultimate security. H. Resin construction: It's made out of all weather-resistant resin to protect deliveries from the elements. 4 in. Large capacity: Spacious interior accommodates several combinations of the most popular delivery packages. W x 24.
BrandKeter #ad
ManufacturerKeter #ad
Height44.09 Inches
Length24.44 Inches
Weight32.84 Pounds
Width21.12 Inches
Part Number245523

6. Zippity Outdoor Products


White, Zippity Outdoor Products ZP19013 Classica Mailbox Post

Zippity Outdoor Products #ad - Crafted from premium weather resistant vinyl. Mailbox sold separately. Kit includes mailbox post, newspaper holder and no-dig pipe anchor kit. The architectural caps and base moldings give special attention to detail. This kit comes with a steel No-Dig pipe anchor to make installation easy and clean.
BrandZippity Outdoor Products #ad
ManufacturerZippity Outdoor Products #ad
Height27 Inches
Length57 Inches
Weight11 Pounds
Width5 Inches
Part NumberZP19013

7. Gibraltar Mailboxes


BP000B01, Gibraltar Mailboxes Brighton Galvanized Steel Black, Universal Mailbox Post

Gibraltar Mailboxes #ad - Compatible with all gibraltar post-mount mailboxes including the E1100B00, E1600B00, and ST200B00 Installs directly in the ground without need for a 4x4 post. Heavy-duty aluminum construction provides strength and stability. All mounting hardware included. Black powder-coated finish is rust-resistant to withstand the elements.
BrandGibraltar Mailboxes #ad
ManufacturerSolar Group #ad
Height52.3 Inches
Length5.5 Inches
Weight6.95 Pounds
Width7 Inches
Part NumberBP000B01
Warranty90 Day Limited Warranty



Nickel Plated, Prime-Line S 4138 Mail Box Lock, 5 Pin, Bommer, Counter Clockwise

PRIME-LINE #ad - 5 pin tumbler. Cam left in locked position. Nickel plated face plate. Fits on various styles of "Boommer Hook" mail box doors.
ManufacturerPrime-Line Products #ad
Height4.88 Inches
Length1.25 Inches
Weight0.1 Pounds
Width3.81 Inches
Part NumberS4138
ModelS 4138

9. Cosco Outdoor Living


Large Lockable Package Delivery and Storage Box, Light Gray BoxGuard, Cosco Outdoor Living 88333GCG1E, 6.3 Cubic feet

Cosco Outdoor Living #ad - Features gray or brown color options that will compliment a wide range of home exteriors. Bold “deliveries sign clearly communicates to mail carrier purpose of product. 45 gallon storage capacity.

Designate your package box as your preferred delivery location to mail delivery companies optional. Boxguard prevents porch theft with option to lock lock not included. Hinge can hold lid open without assistance. Boxguard protects packages from thieves, weather, stray animals, and curious neighbors. Durable construction with weather-resistant, double wall panels and angled design of shingled roof keep packages dry. Large package drop box with interior volume of 6. 3 cubic ft 18 W x 19. 5 d x 31 h holds multiple large packages for shipments, mail, food, laundry, or other common deliveries. Keep deliveries private, hidden and protected.
BrandCosco Outdoor Living #ad
ManufacturerCosco Outdoor Living #ad
Height33.25 Inches
Length22 Inches
Weight13.35 Pounds
Width20.5 Inches
Part Number88333GCG1E
Warranty1 Year Limited Warranty

10. Mail Boss


Granite Mailbox Post, Mail Boss 7126 Surface Mount

Mail Boss #ad - Post made of heavy-duty 10- and 14-gauge electrogalvanized steel. Features durable powder-coated finish. Mail boss mailbox and Base Plate not included. Used with base plate for mounting onto 4-8" sidewalk or curb. Includes 4 mounting bolts and clear instructions.
BrandMail Boss #ad
ManufacturerMail Boss #ad
Height4 Inches
Length27 Inches
Weight0.01 Pounds
Width4 Inches
Part Number7126
WarrantyLimited Lifetime Warranty Against Manufacturer Defects