Every ZIP code in the United States, with weather, radar, trivia and the numbers behind it. Five digits since 1963!

ZIP stands for Zone Improvement Plan. The codes went live on July 1, 1963.The lowest ZIP code is 00501 — the IRS in Holtsville, New York.The highest ZIP code is 99950, in Ketchikan, Alaska.Type 07734 into a calculator and turn it upside down: hELLO. It is Keansburg, New Jersey.12345 belongs to one company: General Electric in Schenectady, New York.The first digit is a region: 0 is New England and New Jersey, 9 is the West Coast, Alaska and Hawaii.Mr. ZIP, the cartoon mailman, was the mascot that sold the idea to America.ZIP+4 arrived in 1983 and can narrow a ZIP down to one side of one block.A ZIP code is a mail route, not a place: plenty of them cross county and even state lines.Play ZIP Hunt: guess the secret ZIP code of the day in six tries.
zipcodes.pro — CITY/MT/ST-MARY

St. Mary ZIP codes, Montana

No ZIP code is named for St. Mary, MT; addresses there use a neighbouring town's name. 2 ZIP codes cover it: 59417 and 59411. Its area code is 406.

USPS city name
0 ZIP codes
Overlapping the city
2 more
Population
193
Area code
406
State
Montana

ZIP codes covering St. Mary

These ZIP codes cover part of St. Mary but are addressed as somewhere else.

ZIP codes overlapping St. Mary
ZIP City Type Population Median income Median home
59411 Babb , MT Standard 798 $61,000 —
59417 Browning , MT Standard 7,470 $37,676 $150,000

Map of St. Mary ZIP codes

5941159417

The ZIP codes of St. Mary, MT, shaded. Outlines are Census ZIP Code Tabulation Areas (2020), which approximate the mail routes; PO-box and single-address codes have no area and are not drawn. Click any area to open its ZIP code.

Towns near St. Mary

The nearest larger towns are Babb (223 people, 10 mi), Starr School (235 people, 16 mi) and North Browning (3,144 people, 22 mi).

Towns near St. Mary
TownPopulationDistance
North Browning 3,144 21.6 mi

More nearby: every ZIP code in Glacier County · Montana ZIP codes

Cite this page

zipcodes.pro. “St. Mary, MT ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/city/mt/st-mary

Underlying data is public domain or openly licensed — sources, vintages and licences.