Shopping Cart
Your Shopping Cart is empty
Total   $0.00

Help Choosing

ic_call_black_24px   301-620-7585  

 

East Coast Office Hours: 

MON - FRI 10:30am - 5:00pm (EST)

 

West Coast Office Hours: 

MON - FRI 9:00am - 5:00pm (MST)

Nationwide shipping Installation available in select Mid-Atlantic areas Call 301-620-7585

Mailbox & Street Sign Installation Services

MidAtlantic Mailbox stays informed of postal requirements along with emerging industry trends to bring you the most up to date products and services. 

 

If you have a mailbox question, we're your answer. 

 

Google Review Midatlantic MailboxGoogle Review 5 StarGoogle Review 5 Stars 

With top-rated manufacturers located all across the USA, Midatlantic Mailbox brings you a high-quality selection of outdoor home products, mailboxes, & DOT approved street signs. Although we ship nationwide, we offer installation in select areas of Maryland, Virginia, DC, Pennsylvania, and West Virginia. Based in Frederick, MD, our centralized location allows us to service the surrounding metropolitan area.

 

Parts of MarylandVirginiaWashington DC District of ColumbiaWest VirginiaPennsylvania

 

Call Midatlantic Mailbox Now!Call 301-620-7585 to learn more!

Residential, commercial & custom mailbox systems

The Right Mailbox for Your Home, Community, or Business

Shop residential mailboxes, commercial delivery systems, replacement parts, address plaques, signs, lighting, and exterior accents - with expert help before you order.

  • Free shipping on commercial mailbox systems
  • After-hours support until 8 PM ET: 240-575-5852
Shop by Project Get Help Choosing Call 301-620-7585
Black Traditional Mount Kit mailbox and post installed in front of a residential home
Nationwide shipping Select-area installation 22+ years of expertise USPS-aware guidance Help until 8 PM ET

Why shop with MidAtlantic

Expertise and support behind every order

Years of industry experience

Residential, commercial, and streetscape products.

Family-owned & woman-owned

A real team you can call before ordering.

Free diagnostic help

Send photos for model, part, or replacement guidance.

Project-aware guidance

Helpful for CBUs, 4C systems, parcel lockers, and replacements.

Free commercial shipping

Qualifying commercial mailbox systems ship free nationwide.

Extended support

Reach Laura after regular business hours at 240-575-5852.

Shop by need

Start with the category you need

Choose the catalog path that matches what you are shopping for.

Organized around real buying decisions, not just a long category tree.

View all categories
KS-25F Keystone black complete mailbox and post system installed at a residential curb Complete Mailbox & Post SystemsEverything you need in one matching package. Florence 1570 cluster box mailbox unit for centralized delivery Commercial Mailboxes & Parcel LockersCommercial delivery systems with project-specific requirements. Replacement mailbox locks, keys, doors, and hardware Mailbox Parts & AccessoriesDoors, locks, keys, and hardware.

Expert guidance

Not sure what fits? We will help narrow it down.

Mailboxes can look similar online. The right choice may depend on delivery type, USPS or project requirements, HOA rules, post compatibility, finish, numbering, installation, and what needs to match your existing property.

What to have ready

  • Photos of the current mailbox
  • Manufacturer or model, if visible
  • HOA requirements, if applicable
  • Delivery type and property type
  • Installation ZIP or location

Free diagnostic and estimating help is available for residential replacements, commercial projects, and hard-to-identify parts.

Get help choosing Send photos for help

What are you trying to do?

Replace my existing mailbox
Recommended: Mailboxes

Check whether your current post is reusable and note the mounting type before ordering.

Shop mailboxes
Buy a new mailbox system
Recommended: Complete systems

Look for a complete post system and matching address plaque for a cohesive result.

Shop complete systems
Plan a commercial or community setup
Recommended: Commercial mailboxes

Confirm the required door count, parcel capacity, delivery setup, and project requirements.

Shop commercial
Find a part, number, lock, or door
Recommended: Mailbox parts

Find the manufacturer name on your current box to help confirm compatibility.

Find parts
Match an HOA or existing model
Ask MidAtlantic to review it

Have your HOA guidelines and photos ready, including required colors, finials, or numbering styles.

Request help

B2B & community projects

Commercial mailbox projects need more than a product grid

MidAtlantic helps property managers, HOAs, developers, apartments, and offices think through door counts, parcel lockers, numbering, replacement parts, project requirements, and installation planning before the order is placed.

  • Free commercial estimating and diagnostic help
  • CBU, 4C, and parcel locker planning
  • Replacement locks, doors, hinges, and parts
  • USPS and project requirement awareness
  • Free shipping on qualifying commercial mailbox systems
Shop commercial mailboxes Request project help
Centralized DeliveryCBU and 4C systems Parcel LockersSecure package management Replacement PartsCommercial doors, locks, and hardware

Select service areas

MarylandVirginiaWashington DCPennsylvaniaWest Virginia
Diagnostic checklistIdentify manufacturerConfirm HOA rulesCheck mounting type

Installation and mailbox diagnostics in select Mid-Atlantic areas

From residential mailbox installation to model identification, replacement options, and commercial estimating, MidAtlantic helps customers confirm the right path before committing to a product or project.

  • Free residential diagnostic and estimating service
  • Model and manufacturer identification
  • Replacement options and lead-time guidance
  • HOA matching support
  • Commercial estimating and route planning
  • Installation availability in select service areas
Ask about installation

Before you order, make sure the fit is right

A quick check before checkout can prevent mismatched parts, incorrect mounting, delivery issues, and unnecessary returns.

USPS and project requirements vary by product and installation type.
Match the post, finish, size, and mounting type.
Check house numbers and personalization.
Verify replacement-part compatibility.
Ask about installation before checkout.

Planning a commercial, community, or replacement mailbox project? Review the available postal resources or ask MidAtlantic before ordering.

Why buyers trust MidAtlantic

Guidance for the details that are easy to get wrong

Whether you are matching an HOA mailbox, replacing a damaged part, planning a commercial delivery setup, or confirming installation requirements, MidAtlantic helps turn a confusing catalog into a clearer buying decision.

Model identification help

Send photos so the team can help identify the manufacturer, model, or closest available match.

Free diagnostic & estimating

Get help with replacement options, project scope, pricing, lead times, and the information needed before ordering.

HOA and community matching

Helpful when matching an approved mailbox, finish, post, plaque, or street theme.

Commercial project planning

Support for CBUs, 4C systems, parcel lockers, door counts, numbering, parts, and development planning.

Postal requirement awareness

MidAtlantic helps customers understand what to confirm before placing commercial orders.

Established manufacturers

A curated catalog of residential, commercial, streetscape, signage, lighting, and exterior products.

MidAtlantic Mailbox, Inc.

Residential mailboxes, commercial delivery systems, address plaques, decorative signs, replacement parts, lighting, and exterior accents.

Contact Us

  • Phone
    301-620-7585
  • Address
    MidAtlantic Mailbox, Inc.
    4507 Metropolitan Court Ste. D
    Frederick, MD 21704
  • Office hours
    Mon-Fri 10:30am-5:00pm ET
  • After-hours support
    Available until 8 PM ET
    240-575-5852

Copyright 2026 MidAtlantic Mailbox, Inc. All rights reserved.

Family-Owned Woman-Owned

© 2021 MidAtlanticMailboxes.com
ecommerce web design