USPS-Approved Mailboxes in Wisconsin
Cluster & Pedestal Multi-Family Options
U.S. Mail Supply provides USPS-approved multi-family mailboxes
throughout Wisconsin. We offer durable, high-quality options for new
developments and multi-unit housing projects. Our cluster box units
(CBUs), pedestal mailboxes and other solutions meet USPS regulations for
secure, centralized mail delivery. Always check with your local
postmaster for specific installation guidelines.
Mail Package Drop
Mail Package Drop/Mail Chest In-Ground Pedestal
Florence 8 Tenant Cluster Mailbox (CBU) Traditional Decorative w/ Pedestal #1570-8V2
Available Finish options
Postal Grey
Dark Bronze
Black
White
Forest Green
Sandstone
Florence 4 Unit Outdoor Parcel Locker w/ Pedestal #1590-T2
Available Finish options
- Postal Grey
- Dark Bronze
- Black
- White
- Forest Green
- Sandstone
Florence 16 Tenant Cluster Mailbox (CBU) w/ Pedestal #1570-16
Available Finish options
- Postal Grey
- Dark Bronze
- Black
- White
- Forest Green
- Sandstone
Front-Loading Horizontal Mailboxes – 35 Doors
Available Finish options
Anodized Aluminum
4-Door 3500 Series Vertical Mailbox
Available Finish options
- Sandstone
Bronze
Aluminum
Double Letter Locker Collection Box-Front Access
Available Finish options
- Black
- White
Tan
Gray- Bronze
Multi-Family Mailboxes for New Property Developments in WI
As Wisconsin continues to experience rapid growth in the multi-family housing sector, developers are seeking reliable solutions for efficient and secure mail delivery. Multi-family mailboxes play a key role in new residential developments by meeting USPS standards and providing residents with convenient mail access.
U.S. Mail Supply has the perfect mailbox system for your project, whether you’re building a new apartment complex, townhomes or condominiums. Our USPS-approved mailboxes, including pedestal and cluster mailboxes, are designed for long-lasting performance and easy installation.
U.S. Mail Supply Has Multi-Family Mailbox Solutions For
- Apartment Complexes
- Condominiums
- Townhome Communities
- Student Housing
- Senior Living Facilities
- Military Housing
- Public Housing Authorities
- Mixed-Use Developments
- Affordable Housing Projects
- Property Management Companies
- Real Estate Developers
- New Multi-Family Construction Projects
- Renovation & Retrofit Projects
- HOAs (Homeowners Associations)
- Section 8 and Government-Sponsored Housing
Requirements for Multi-Family Mailboxes in WI
Mailbox regulations in Wisconsin are primarily governed by the United States Postal Service (USPS) standards, local municipal codes and specific requirements for multifamily dwellings. It’s essential to consult with local authorities or the local postmaster to ensure compliance with any additional regulations or standards specific to your area.
USPS Mailbox Requirements
Placement and Height
Mailboxes must be placed 6 to 8 inches away from the curb. The incoming mail slot or door must be between 41 and 45 inches from the ground.
Address Visibility
Each mailbox must visibly display the address, with numbers at least 1 inch tall, located on the front or flag side of the box.
Cluster Box Units (CBUs)
For new construction or major renovations, USPS requires the use of STD-4C Horizontal Mailboxes or Cluster Box Units (CBUs). The highest tenant lock must be no more than 67 inches above the finished floor and the lowest must be at least 28 inches above.
Parcel Locker Ratio
There must be 1 parcel locker for every 5 mailbox compartments in multi-family units.
Wisconsin-Specific Mailbox Requirements
Mailbox Supports
In Wisconsin, mailbox supports must comply with standards established by the Wisconsin Department of Transportation. Plastic posts are prohibited and supports should not pose a hazard to public use of the right-of-way.
Snow Removal
Homeowners or homeowners’ associations are responsible for removing snow and ice within the time required by local ordinances.
Building Codes
Multifamily dwellings constructed after April 1, 1995, must comply with Wisconsin’s Uniform Multifamily Dwelling Code.
Americans with Disabilities Act (ADA) Compliance
Mailbox access heights should range from 15 to 48 inches above the floor for forward or side reach accessibility.
Requirements by Property Type
Site-Constructed Single-Family Developments
Developers must coordinate with the USPS during the design phase, as centralized mail delivery with secure parcel lockers is the standard for new communities. If new homes are within one block of existing ones, they may adopt the same delivery method pending USPS review; otherwise, current centralized delivery standards apply.
Mobile or Trailer Home Developments
Apartment Communities
Use USPS-approved 4C centralized mailbox units with at least one parcel locker per five mailboxes, installed near main entrances and accessible to carriers. Outdoor units require USPS approval, must avoid streets or sidewalks and include a canopy with lighting and weather protection.
Student Housing & Off-Campus Dormitories
USPS delivers mail in bulk to a designated representative for distribution within dormitories, with no individual mailbox delivery provided. Dormitories—defined by shared living spaces—require early coordination with a USPS Growth Manager and may need named designees to accept mail.
*See the USPS National Delivery Planning Standards: A Guide for Builders and Developers for more information.
Fastest Growing Multi-Family Property Investments in Wisconsin
Multi-family housing is on the rise across Wisconsin and no city is
embracing this trend more aggressively than Madison. Ranked #2 among
midsize metros nationwide, Madison saw a staggering 71.4% of all new
housing units built as multi-family in the most recent year of
available data. Madison’s robust growth in multi-family construction
reflects the city’s population growth and the increasing demand for
walkable, amenity-rich living spaces among both young professionals
and downsizing retirees.
Other Wisconsin cities are also making significant strides in the multi-family sector:
- Eau Claire ranks #1 among small metros nationally, with 77.4% of new construction being multi-family.
- Racine follows closely with 70.2%, also earning a top spot among small metros.
- Sheboygan lands at 65.9%, rounding out Wisconsin’s trio of small metro leaders in multi-family investment.
With Wisconsin ranked #15 overall in the U.S. for new multi-family housing development, the state is quickly becoming a magnet for investors, developers and property managers looking to tap into high-growth, high-demand markets. If you’re managing or investing in multi-family properties in Madison or other rapidly growing Wisconsin cities, now is the time to explore mailbox solutions that meet modern tenant needs and align with USPS regulations.
Top Multi-Family Property Management Firms in WI
Several leading property management firms in Wisconsin are fueling the
expansion of multi-family housing, managing everything from upscale
apartment complexes to sprawling townhome communities. U.S. Mail
Supply has a large inventory of USPS-approved mail delivery systems
for sale. Top firms trust us to deliver compliant, durable
multi-family mailbox solutions—whether installing cluster mailboxes in
urban complexes or pedestal units in suburban communities—meeting
tenants’ needs and complementing property aesthetics.
Manages over 3,500 apartments across 60 unique properties in Madison, with many being pet-friendly.
Offers rental management services aimed at protecting investments, minimizing costs and boosting income for property owners.
Choose U.S. Mail Supply for Your Multi-Family Mailbox
- USPS Compliance Guaranteed
- Constructed With High-Quality Materials
- Custom Design & Sizing Options
- Nationwide Delivery Network
- Woman-Owned Business
- Installation Support
- USPS & Unit Quantity Guidance
- Volume Discounts
- Solutions For Every Multi-family Property Type
Equip your multi-family development with the best USPS-approved mailboxes in Wisconsin. Contact U.S. Mail Supply today for a consultation and to explore our range of cluster, pedestal and other mailboxes for multi-family properties.
USPS-Approved Mailbox FAQ
Where can I buy mailboxes in Wisconsin?
The United States Postal Service does not sell mailboxes. You can purchase mailboxes in Wisconsin through U.S. Mail Supply. We offer a variety of mailboxes for residential and commercial uses including USPS-approved mailboxes.
What mailboxes are approved by USPS in Wisconsin?
All mailboxes that comply with Federal regulations set by the Postmaster General (PMG) are approved in Wisconsin. Your local community or municipality may enforce extra guidelines. Always check with your local post office before installing. U.S. Mail Supply offers USPS-approved and private delivery mailboxes.
How do I get a new mailbox in Wisconsin?
The United States Postal Service does not sell mailboxes. You can shop our wide selection of residential, commercial and private delivery mailboxes or contact us for more information. US Mail Supply has a vast selection of USPS-approved mailboxes for new construction and also for the replacement of old and outdated mailboxes.
Can I customize my mailbox in Wisconsin?
Customizing your mailbox is allowed in certain circumstances. If you customize or build your own mailbox it must meet the Postmaster General’s standards. Show your local postmaster for approval before installation.
How do I install my Wisconsin mailbox?
Installation of curbside mailboxes must meet specific construction standards. Generally, curbside mailboxes must be 6-8 inches back from the curb and 41-45 inches from the road surface. Before installing, moving or replacing your mailbox you need to contact your local Postmaster or mailperson from your local Post Office. Wall-mounted mailboxes used for multi-residential or commercial purposes must meet the USPS guidelines (USPS-STD-4C) which require Standard Parcel Lockers to be 15 inches high by 12 inches wide by 15 inches deep and Large Parcel Lockers to be 18 inches high by 12 inches wide x 15 inches deep.
Can I get private mail delivery in Wisconsin?
Yes, private mail delivery services such as UPS, FedEx and Amazon all deliver in Wisconsin. Private delivery companies are not allowed to deliver directly to your USPS mailbox because it is technically owned by USPS and no postage has been paid. U.S. Mail Supply offers a variety of types and styles of mailboxes for private delivery to keep your packages safe, secure and private.
Can a Wisconsin property owner create a custom mail service?
Businesses, universities, multi-residential apartments and other property owners are allowed to create a custom mail service in Wisconsin as long as 4C and ADA regulations are followed. U.S. Mail Supply’s inventory of 4C mailboxes is designed for any volume of package delivery, tenant boxes and sizes.
USPS-Approved Mailboxes for Wisconsin Multi-Family Properties In:
- Milwaukee
- Madison
- Green Bay
- Kenosha
- Racine
- Appleton
- Waukesha
- Eau Claire
- Oshkosh
- Janesville
- West Allis
- La Crosse
- Sheboygan
- Wauwatosa
- Fond du Lac
- New Berlin
- Wausau
- Brookfield
- Beloit
- Greenfield
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