Post Office Service in Montana: Who Runs It and Where to Find It

Montana covers more than 147,000 square miles, and only about 1.1 million people live across it. That ratio shapes how mail moves. A post office in Montana can be a high-volume retail floor in Billings or a small counter serving a few dozen households along a gravel road. Our directory lists 314 locations, and knowing the difference helps you plan a trip.

This page explains how postal service is organised in the state, how city and country offices differ, and what to expect at the window. Read it alongside the listings for your own county.

Who Runs Post Offices in Montana

Post offices in Montana are not state or county facilities. They belong to the United States Postal Service, an independent agency of the federal executive branch. Its current structure comes from the Postal Reorganization Act of 1970, and its governing statutes sit in Title 39 of the U.S. Code. The Postal Regulatory Commission reviews rates and service performance nationwide.

That means no Montana state agency sets counter hours, prices or closure decisions. State legislators cannot change a local post office schedule. If you have a service problem, the practical routes are the local postmaster, the USPS customer service line at 1-800-275-8777, or the offices of Montana's members of Congress, who regularly handle postal casework for constituents.

State and county government still depends on the mail. County clerk and recorder and election offices send out ballots, and Montana counties rely heavily on mail voting. Those offices decide how ballots are prepared and counted, but the delivery itself belongs to USPS. If you vote by mail, ask your county election office about return deadlines instead of assuming a postmark will count.

Billings, Missoula, Helena and Great Falls: Montana's Larger Postal Hubs

The biggest offices cluster where the population does. Two counties lead our database with 14 listings each: Yellowstone County and Cascade County. Both are built around a major city on the main east-west and north-south travel corridors, and both have a mix of urban stations and small outlying offices.

Billings is the state's largest city and has six listings in our records. One example is the Pryor Post Office, listed at 130 Mak Pua Avenue, Billings, phone 406-259-3387. Names and cities do not always match, because a listing's city comes from its address record. Confirm the street address and ZIP code before you set out.

In Great Falls, the Charles M Russell Station Post Office sits at 3400 9th Avenue South and can be reached at 406-791-2562. Stations like this one handle everyday retail needs, such as stamps, packages and PO Box access, so residents do not have to use a single central counter. Cascade County also includes smaller offices such as Fort Shaw, on Montana 200, and Monarch, listed under Belt.

The state capital has the Helena Post Office at 2300 North Harris Street, phone 406-443-3304, in Lewis and Clark County. In Missoula, the Mullan Post Office at 3150 Great Northern Avenue (406-728-5535) is one of four Missoula listings, and Missoula County has ten in total. Students, state employees and small businesses make these counters busy at predictable times, especially around noon and just after work.

Butte has five listings, including the Copper Hill Station Post Office at 60 West Galena Street (406-723-0177) in Silver Bow County. Bozeman's office at 2201 Baxter Lane (406-586-1508) serves Gallatin County, one of the fastest-growing parts of the state.

Larger offices usually offer more services. Expect a wider range of PO Box sizes, Saturday hours at some locations, and passport application service at selected offices, often by appointment. Call ahead for any service that needs a trained clerk or a scheduled slot.

Small-Town and Frontier Post Offices Across Montana

Most of our 314 listings are not in the big cities. They are in towns like Absarokee in Stillwater County, where the post office stands at 25 South Montana Avenue (406-328-4736), or Clancy in Jefferson County at 2 North Main Street (406-933-5655). These offices are often the busiest public building in a small community, handling mail, packages and the local news.

Many small offices keep short window hours, and some have only one postal employee. The lobby, where PO Boxes sit, is often open longer than the counter. If you only need to pick up mail, you may be able to do so outside window hours. If you need to buy postage, ship a package or sign for a parcel, check the posted window hours first.

Delivery works differently outside town. Rural carriers drive long routes and deliver to roadside mailboxes, and some addresses are served only through a PO Box because no carrier route reaches them. The Sumatra Post Office, listed at 2960 South Sumatra-Hysham Road near Melstone in Musselshell County, is an example of an office tied to a dispersed ranching area rather than a town grid.

Weather is a real factor. Winter storms along the Hi-Line (U.S. 2) and mountain passes in the west can slow trucks and carriers. Ethridge, listed at 26667 U.S. 2 under Shelby in Toole County (406-339-2141), sits on that corridor. If you are mailing something time-sensitive between December and March, send it early.

Some listings pair a village name with a different mailing city. Fortine is listed under Libby in Lincoln County, Monarch under Belt, and Warm Springs under Anaconda. The Reserve Post Office is listed at 400 Central Avenue, Dagmar, in Sheridan County. Always check the full address and ZIP code before you drive.

Practical Steps Before You Visit a Montana Post Office

A little preparation saves a long drive in a state where the next counter may be forty miles away. Use this short checklist:

You can also manage much of your mail without visiting. USPS offers online change of address, hold mail, package tracking and prepaid labels, which is especially useful if your nearest office is far away. For in-person service, use the county pages in this directory to find the office closest to you.

Post offices in Montana are part of the national USPS network, operating under regional district management to deliver uniform service standards while accommodating the specific needs of urban, suburban, and rural communities across the state. Larger cities in Montana may have multiple post offices and main processing facilities.

Post Office locations are available in 268 cities across Montana. They are spread across 54 counties.

Cities with the highest concentration of post office locations include Billings, Butte, Missoula, reflecting densely populated areas with multiple branch offices serving different neighborhoods and zip codes.

Residents of Montana can use the USPS website to find the closest post office, check current lobby and window hours, locate self-service kiosks available after hours, and track incoming and outgoing mail and packages from their phones or computers.

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Residents of Montana can save time by using USPS online tools to schedule package pickups from home, print prepaid shipping labels, and set up mail forwarding or hold requests without visiting a post office. When visiting a post office in Montana for passport acceptance, call ahead to confirm that the specific location offers the service and whether an appointment is required.

Browse Post Office by county across Montana to find the nearest location.

Finding the Right Post Office in Montana by County

Counties are the easiest way to narrow the list. Flathead County has 11 listings, including the Kalispell Post Office at 350 North Meridian Road, reachable at 406-755-6450. Madison County has ten, among them the Ennis Post Office at 81 Highway 287 (406-682-4286). In the Bitterroot Valley, the Hamilton Post Office at 150 North 4th Street can be reached at 406-363-1445.

Northeastern Montana looks different. The Flaxville Post Office on Main Street in Daniels County (406-474-2280), the Malta Post Office at 207 South 1st Avenue East in Phillips County (406-654-1424), and the Richland Post Office at 74 Main Street, Opheim, in Valley County (406-724-3382) serve wide, thinly settled areas. Distances between counters can be long, so a quick call saves a wasted trip.

Other examples include the Paradise Post Office at 5 McLaughlin Creek Road, Plains (406-826-3011), and the Dupuyer Post Office at 110 West Dupuyer Road, Pendroy (406-472-3289). Match the full street address and ZIP code to your own mail before you rely on any listing, and confirm hours directly with the office.

Montana Post Office Questions Answered

No. Every post office in Montana is run by the United States Postal Service, a federal agency governed by Title 39 of the U.S. Code. The state and its counties do not set hours, staffing or closures. If you have a concern about a local office, start with the postmaster, then call USPS at 1-800-275-8777. Montana's congressional offices can also help with unresolved problems. County offices, such as clerks and election administrators, depend on USPS delivery but do not control it.

Start with your mailing address and ZIP code, because the office that serves you may not be in the nearest town or your county seat. The USPS Locator on USPS.com shows offices by ZIP code. You can also browse the county pages in this directory and match the street address to your mail. If your address uses a rural route or highway contract route, call the office listed on your mail to confirm where to pick up packages.

Some can, but not all. Passport acceptance is usually offered at larger offices in cities like Billings, Missoula, Helena, Great Falls and Bozeman, and often by appointment. Many small-town offices do not offer it. Bring proof of citizenship, a valid photo ID, a passport photo and a completed application. Fees are split between the State Department and the post office, and amounts change, so confirm current costs. Some county clerks of court also accept passport applications, which can be closer in remote areas.

Blizzards, icy roads and mountain pass closures can delay trucks and rural carriers, particularly along the Hi-Line (U.S. 2) and in the western ranges. Carriers may skip a route when conditions are unsafe, and mail then arrives the next day or later. Plan ahead from December through March. Mail time-sensitive items early, track packages online, and keep your mailbox accessible and cleared of snow. If you are away, use the USPS hold mail service so letters do not pile up in a buried box.

Apply at the office, either in person or by starting the application online and finishing at the counter. You will need two forms of identification and proof of your address. Fees depend on box size and location, and the clerk can tell you current rates and payment terms. Small offices have a limited number of boxes, so you may be placed on a waiting list. In some rural areas a PO Box is the only way to receive mail, so apply early.

Ballots are handled by your county election office, not the post office. Montana ballots generally must reach the election office by the close of polls on election day, so a postmark alone may not be enough. Mail yours well ahead of the deadline, especially from a remote area where pickups may be limited. Contact your county election office to confirm the current deadline, drop-off locations and how to track your ballot. Rules can change between election cycles, so check each time.