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-IGNATIUS

St. Ignatius ZIP code, Montana

The ZIP code for St. Ignatius, MT is 59865, and its area code is 406.

USPS city name
1 ZIP code
Population
977
Area code
406
State
Montana

Also written Saint Ignatius, the spelling the Postal Service uses.

St. Ignatius in numbers

About 977 people live in St. Ignatius, in 334 households. The median household income is $50,000 a year, 31% below the Montana median of $72,509 (US: $80,734). The median owner-occupied home is valued at $250,000 (33% below the Montana median), and median gross rent is $842 a month. The median age is 31.0; 25.0% of adults 25 and over hold a bachelor's degree or higher (35.2% across Montana); the average commute takes 26 minutes.

Population977St. Ignatius977
Households334St. Ignatius334
Median age31.0St. Ignatius31.0Montana40.4US 38.9
Median household income$50,000St. Ignatius$50,000Montana$72,509US $80,734
Median home value$250,000St. Ignatius$250,000Montana$375,800US $332,700
Median gross rent$842St. Ignatius$842Montana$1,081US $1,413
Bachelor's degree or higher25.0%St. Ignatius25.0%Montana35.2%US 35.7%
Mean commute25.5 minSt. Ignatius25.5 minMontana19.1 minUS 26.4 min
Population density1,833 / sq miSt. Ignatius1,833 / sq mi

U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, for the census place St. Ignatius town. Survey estimates carry margins of error, wider for small places. Sources and methods.

ZIP codes addressed as Saint Ignatius

ZIP codes with the USPS city name Saint Ignatius
ZIP City Type Population Median income Median home
59865 Saint Ignatius , MT Standard 3,635 $56,473 $345,300

Map of St. Ignatius ZIP codes

59865

The ZIP codes of St. Ignatius, 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. Ignatius

The nearest larger towns are Ronan (2,001 people, 15 mi), Pablo (1,632 people, 20 mi) and Frenchtown (1,927 people, 21 mi).

Towns near St. Ignatius
TownPopulationDistance
Polson 5,428 25.6 mi

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

Cite this page

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

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