Mailbox Repair & Replacement in St. Louis, MO

Mailbox Repair & Replacement in St. Louis — Posts, Leaning, and Vehicle Damage

Post replacement, leaning mailboxes, vehicle damage, and new mailbox installation — no minimum job size

Mailbox Repair in St. Louis

FIX St. Louis replaces and repairs mailboxes and mailbox posts in St. Louis — leaning posts that need re-setting, posts and boxes knocked out by vehicles, new post installation with correct depth and concrete, and complete mailbox replacements. All work is done to USPS height and placement requirements. No minimum job size. Firm quote before any work. Phones answered 24/7.

314-434-4100

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Phones Answered 24/7

314-254-8006

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Mailbox Services FIX St. Louis Handles

Service	What We Do
Replace mailbox posts	Remove old post; install new post with correct depth and concrete footing.
Secure detaching siding panels	Remove old mailbox; install new mailbox; level and secure to post or house.
Repair leaning mailboxes	Re-set leaning post; correct depth; re-concrete footing as needed.
Repair/replace mailboxes hit by vehicles	Assess damage; replace post and/or mailbox unit as needed; restore to USPS-compliant position.

Mailbox Problems in St. Louis

Why Mailboxes Lean — and the Right Way to Fix It

A leaning mailbox post has almost always failed at the same point: the base, where the post meets the ground. Wood posts rot at grade level for the same reason fence posts do — they’re in permanent contact with soil moisture. Steel posts corrode at the same point. And posts that were not set deep enough or were not properly set in concrete simply work loose from frost heave and seasonal soil movement.
The correct fix is re-setting the post — excavating the base, removing the old post or correcting its position, and setting it with correct depth (typically 24 inches for a standard mailbox post in St. Louis’s freeze-thaw climate) and concrete. A post simply pushed back upright without correcting the base failure will lean again within a season.

Dr. Steve’s Take:

Mailboxes made Dr. Steve’s list in a piece on what wind events damage at the exterior of a home. A mailbox post that is already slightly soft or leaning going into a St. Louis storm season is the one that comes down in the next significant wind event. Inspect your mailbox post by pushing it firmly with your hand — solid posts don’t flex. If yours does, re-setting the base before it fails is far easier than replacing one that’s been knocked into the street.

From Dr. Steve’s Tips: Finally! Answers, My Friend, to What’s Blowing in the Wind

Vehicle-Damaged Mailboxes

A mailbox hit by a vehicle is one of the most common outdoor repair calls we receive in winter, when snow plows clip mailboxes along cleared roads, and year-round from vehicles cutting corners in residential driveways. The damage is almost always to the post — the impact snaps or bends it at grade — and sometimes to the mailbox unit itself.
We replace what has been damaged, set the new post correctly, and restore the mailbox to its USPS-required height and setback position. If the homeowner’s insurance or the responsible driver’s insurance is covering the repair, we can provide a written estimate before work begins.

Dr. Steve’s Pro Tip:

USPS requires curbside mailboxes to be positioned so the mailbox door is 6 to 8 inches back from the curb face, and the bottom of the mailbox opening is 41 to 45 inches from the road surface. When replacing a mailbox post after vehicle damage, we restore these dimensions exactly to avoid mail delivery interruption.

Mailbox Upgrades and New Installations

A mailbox is a small but highly visible exterior feature. An old, dented, or rust-streaked mailbox on a sagging post undercuts curb appeal immediately. Dr. Steve consistently includes the mailbox in lists of small exterior upgrades with outsized visual impact.
Whether you’re upgrading an existing post-mounted mailbox, replacing a wall-mounted unit, or installing a new decorative post, FIX handles the job correctly. We source the right post depth for the soil and climate, use concrete for all ground-set posts, and install the mailbox at correct USPS-compliant height.

Dr. Steve’s Take:

A fresh mailbox and a straight, well-set post is among the least expensive curb appeal improvements available to a St. Louis homeowner. Dr. Steve puts it in the same category as a new house number and freshly painted exterior trim — the kind of detail that registers immediately on first impression, especially when a home is being shown for sale.

From Dr. Steve’s Tips: Simple Repairs to Enhance Your Home’s Resale Value (No Renovations!)

314-434-4100

Call Now

Phones Answered 24/7

314-254-8006

Text Now

Online Form

Free Quote

FAQs

Mailbox Repair in St. Louis

My mailbox post is leaning. Can I just push it back upright?

Temporarily, yes — but not as a lasting repair. A leaning post has failed at its base, either from rot, corrosion, or insufficient original installation. Pushing it upright without addressing the base means it will lean again within a season, often faster because the original base damage has been further disturbed. The correct repair is re-setting the post with correct depth and concrete

How deep should a mailbox post be set in St. Louis?

For St. Louis’s freeze-thaw climate, a ground-set mailbox post should be buried at least 24 inches deep to get below the frost line. A post set shallower than this is subject to frost heave — the cyclical freezing and thawing of the soil that pushes posts upward each winter and results in the classic lean by spring.

My mailbox was knocked out by a snow plow. Will the city or plow service pay for the repair?

Snow plow mailbox damage is a recurring issue in St. Louis winters. Liability depends on whether the mailbox was in the right-of-way and properly installed. We recommend documenting the damage with photos and contacting the municipality or contractor before repair. We can provide a written estimate that supports any claim. Regardless of who pays, we complete the repair correctly.

What height should my mailbox be?

USPS requires the mailbox opening to be 41 to 45 inches from the road surface, with the mailbox positioned 6 to 8 inches behind the face of the curb. These dimensions are required for mail delivery. When we replace a mailbox or post, we restore these measurements as part of the installation.

What St. Louis neighborhoods do you serve for mailbox repair?

We serve homeowners throughout the St. Louis metro, including Kirkwood, Webster Groves, Clayton, Chesterfield, Creve Coeur, Ladue, Brentwood, Maplewood, Richmond Heights, Sunset Hills, and surrounding communities. Contact us to confirm service in your neighborhood.

Mailbox Leaning or Knocked Out? Let’s Fix It.

FIX St. Louis handles the exterior repair work that protects your home’s envelope without requiring a full siding project. Firm quote before we touch anything. No minimum job size. Phones answered around the clock.

Contact FIX St. Louis — Mailbox Repair Services

Call 314-434-4100 — Phones answered 24 hours a day, 7 days a week

Text 314-254-8006 — Text us anytime with questions or to schedule

FIX St. Louis • 50 River Bend Dr, St. Louis, MO 63017

CustomerService@FixSL.com

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