Advertising Disclosure
Updated: 06 Apr 2026

10 Best Mailbox Posts Steel

#1 Best Pick
Architectural Mailboxes 7680B-10 MB1 Mount Mailbox and In-Ground Post Kit, Medium, Bl

Architectural Mailboxes 7680B-10 MB1 Mount Mailbox and In-Ground Post Kit, Medium, Bl

Brand: ARCHITECTURAL MAILBOXES
Read more
  • Usps approved MB1 mailbox, in-ground post, hardware and installation instructions included
  • Fluted ABS mailbox mounting plate attaches to post to provide aesthetic design
  • 2-part steel 53 inch in-ground post with heavy gauge steel connector for rigidity
  • Constructed of fully powder coated steel and ABS parts for longevity
  • Usps approved mailbox measures 6.9 in. W x 8.7 in. H x 20.2 in. D
Check latest price on Amazon
#2 Best Value
Architectural Mailboxes Mailbox-to-Go Weather-Resistant Steel Metal Mail Box for Outside with Post, Black, Medium Curbside Mailbox, USPS Approved for Residential Delivery

Architectural Mailboxes Mailbox-to-Go Weather-Resistant Steel Metal Mail Box for Outside with Post, Black, Medium Curbside Mailbox, USPS Approved for Residential Delivery

Brand: ARCHITECTURAL MAILBOXES
Read more
  • All-in-one mailbox & post combo includes: mailbox, mounting bracket, hardware, in-ground mailbox post
  • Included Components: mounting_hardware
  • Item model number: ‎T11KIT0BAM
  • Item Weight: 9.93 pounds
Check latest price on Amazon
#3 Budget Pick
NACH Chelsea Post Wall Mount Mailbox, Vintage Mailboxes for Outside Wall Mount, Powder Galvanized Steel Mailbox, Wall Mailbox, Outdoor Mailboxes, Metal Mailbox, 11.5 x 5 x 13, Black Mailbox, MB-6946

NACH Chelsea Post Wall Mount Mailbox, Vintage Mailboxes for Outside Wall Mount, Powder Galvanized Steel Mailbox, Wall Mailbox, Outdoor Mailboxes, Metal Mailbox, 11.5 x 5 x 13, Black Mailbox, MB-6946

Brand: NACH
Read more
  • Modern Mailbox Design: The streamlined design of this wall mount mailbox provides a unique yet stylish wall mounted mailbox that gives it the versatility to fit in to the aesthetic of your home.
  • Heavy Duty Mailbox: This metal mailbox has been thoughtfully designed and finished in order to resist rust formation. Hang your wall mount mailbox in a covered area for best results.
  • Wall Mount Mailbox Product Dimensions: 11. 5” W x 4. 8” D x 13” H. Mail Box Mounting Hole Spacing: 8.58”
  • Easy Installation Mail Box - This wall mount mailbox comes fully assembled with two pre-drilled holes, making the mailbox wall mount process a snap!
  • Wall Mount Mailbox Dimensions: 11.5" x 5" x 13" Mail Box Mounting Hole Spacing: 8.58”
Check latest price on Amazon
#4 Top Choice
Mail Boss 7120 In Ground Steel Post, Granite

Mail Boss 7120 In Ground Steel Post, Granite

Brand: Mail Boss
Read more
  • 43 inch post of heavy-duty 10- and 14-gauge electrogalvanized steel
  • Features durable powder-coated finish
  • Can be used with a wooden post for deep in-ground installations
  • Includes 4 mounting bolts and clear instructions
  • Mail Boss not included
Check latest price on Amazon
#5 Popular Choice
Architectural Mailboxes Franklin™ Weather-Resistant Steel Metal Mail Box for Outside with Post, Black, Medium Curbside Mailbox, USPS Approved for Residential Delivery

Architectural Mailboxes Franklin™ Weather-Resistant Steel Metal Mail Box for Outside with Post, Black, Medium Curbside Mailbox, USPS Approved for Residential Delivery

Brand: ARCHITECTURAL MAILBOXES
Read more
  • One Purchase, Zero Guesswork: Skip the stress of mixing and matching—this mailbox with post for outside is designed to fit together seamlessly.
  • Weather Tough, Year-Round: Rain, snow, or sun—galvanized steel construction makes this mail box one of the most reliable metal mailboxes for outside use.
  • Rust-Resistant from Top to Bottom: This post mounted mailbox features a tough powder-coat finish, adding an extra layer of protection to this curbside mailbox with post.
  • Perfect Everyday Size: Medium size offers plenty of space for daily mail, magazines, & small packages—perfect for most curbside mail boxes for outside.
  • USPS Post Master General Approved: Mailbox is USPS approved, as required for all curbside delivery by U.S. Mail carriers - for smooth, uninterrupted service.
Check latest price on Amazon
#6 Top Pick
Brunswick Large, Steel, Post-Mount Mailbox, Black w/Brushed Nickel, Plain Packaging

Brunswick Large, Steel, Post-Mount Mailbox, Black w/Brushed Nickel, Plain Packaging

Brand: ARCHITECTURAL MAILBOXES
Read more
  • Constructed from heavy-duty galvanized steel for extra strength and longevity
  • Large capacity accommodates high volume mail deliveries including padded envelopes, magazines, and small- to medium-sized packages
  • Glossy black finish is powder-coated to resist rust and elements, while satin nickel finished accents provide appealing contrast
  • Magnetic latch ensures door stays firmly closed in between pickups
  • Embossed sides can be used as guide to align address numbers.Fully assembled with pre-drilled holes on side and bottom to reduce installation time.Match with Gibraltar Mailboxes posts with the designation letter B.Mounting hardware sold separately.Frustration-free, plain, brown packaging
Check latest price on Amazon
#7 Top Pick
Architectural Mailboxes 7980B-10 Roxbury Mount Mailbox and Premium Steel Post Combo, Medium, Black

Architectural Mailboxes 7980B-10 Roxbury Mount Mailbox and Premium Steel Post Combo, Medium, Black

Brand: ARCHITECTURAL MAILBOXES
Read more
  • USPS Approved Roxbury Mailbox, in ground post, decorative shrouds, hardware and installation instructions included
  • Mailbox and in ground post are fully powder coated for corrosion resistance
  • Cantilevered ABS upper post shroud covers any unsightly hardware
  • ABS decorative shrouds are UV stabilized for outdoor use and resist fading and discoloration
  • USPS Approved Mailbox measures 8.8 in. W x 10.9 in. H x 20.6 in. D In ground post is 64.5 in. H.Material Type: Galvanized Steel Abs.Included Components: Mailbox In Ground Post Post Cover Upper Shroud Installation Hardware
Check latest price on Amazon
#8 Top Pick
ARCHITECTURAL MAILBOXES Gibraltar Mailboxes Arlington Large Capacity Galvanized Steel Textured Black, Post-Mount Mailbox, AR15B000

ARCHITECTURAL MAILBOXES Gibraltar Mailboxes Arlington Large Capacity Galvanized Steel Textured Black, Post-Mount Mailbox, AR15B000

Brand: ARCHITECTURAL MAILBOXES
Read more
  • Constructed from galvanized steel with heavy-duty molded plastic door for added durability
  • Large capacity accommodates small to medium size packages
  • Powder-coated paint protects mailbox from rust and other elements
  • Roller catch door latch keeps door securely in place
  • Space provided on front door for address numbers.Pre-drilled holes on side and bottom for mounting.Some assembly is required.Mounting board and hardware sold separately.Match with any Gibraltar Mailboxes post with the letter code B
Check latest price on Amazon
#9 Top Pick
Architectural Mailboxes Coolidge Galvanized Steel Mailbox Post, Compatibility Code F, 7511B-10, Black

Architectural Mailboxes Coolidge Galvanized Steel Mailbox Post, Compatibility Code F, 7511B-10, Black

Brand: ARCHITECTURAL MAILBOXES
Read more
  • Simplistic in ground post design
  • Fluted mailbox plate attaches to post to provide aesthetic design
  • 2 part steel post with heavy gauge connector for rigidity
  • Constructed of steel and ABS parts for longevity
  • Includes installation instructions and assembly hardware
Check latest price on Amazon
#10 Top Pick
Architectural Mailboxes Chadwick Galvanized Steel Post Mount Mailbox, 8950B-10, Black, Medium Capacity

Architectural Mailboxes Chadwick Galvanized Steel Post Mount Mailbox, 8950B-10, Black, Medium Capacity

Brand: ARCHITECTURAL MAILBOXES
Read more
  • Steel reinforced opening resists abuse
  • Cast aluminum handle
  • Fully powder coated inside and out
  • Durable galvanized steel for longevity
  • Mailbox measures 21 in. x 6.61 in. x 8.8 in.
Check latest price on Amazon

More products you might like!!