Have you ever wondered what the prefix numbers on Montana license plates mean? Well. here's the answer.

According to the Montana Department of Justice, the prefix numbers on Montana license plates were added to designate the county in which that vehicle was registered.

Modern Montana standard-issue license plates feature an outline of the state of Montana and a bison skull. The outline of the state was first found on the 1933 orange and maroon plate, and the bison skull was first added for a single year in 1938.

Montana also offers a wide variety of alternate license plates. Montana offered its first alternate license plate, the Amateur Radio Operator plate, in 1958.

Now, back to the numbers on Montana license plates and what they mean. Reddit user u/MooseMonkeyMT posted the following infographic on the r/Montana thread on Thursday. From reading the comments on Reddit, it sounds like memorizing all the county names, numbers, and county seats is a part of Montana history curriculum for Junior High School students in the state.

Photo Credit: u/MooseMonkeyMT vi aReddit

A full list of Montana counties and corresponding license plate numbers can be found at mtcounties.org. For Gallatin County, the corresponding license plate number is 6. In Park County, the number you'll find on standard-issue license plates is 49.

Check out the full list below.

License Plate Number/County

    • 1: Silver Bow
    • 2: Cascade
    • 3: Yellowstone
    • 4: Missoula
    • 5: Lewis & Clark
    • 6: Gallatin
    • 7: Flathead
    • 8: Fergus
    • 9: Powder River
    • 10: Carbon
    • 11: Phillips
    • 12: Hill
    • 13: Ravalli
    • 14: Custer
    • 15: Lake
    • 16: Dawson
    • 17: Roosevelt
    • 18: Beaverhead
    • 19: Chouteau
    • 20: Valley
    • 21: Toole
    • 22: Big Horn
    • 23: Musselshell
    • 24: Blaine
    • 25: Madison
    • 26: Pondera
    • 27: Richland
    • 28: Powell
    • 29: Rosebud
    • 30: Deer Lodge
    • 31: Teton
    • 32: Stillwater
    • 33: Treasure
    • 34: Sheridan
    • 35: Sanders
    • 36: Judith Basin
    • 37: Daniels
    • 38: Glacier
    • 39: Fallon
    • 40: Sweet Grass
    • 41: McCone
    • 42: Carter
    • 43: Broadwater
    • 44: Wheatland
    • 45: Prairie
    • 46: Granite
    • 47: Meagher
    • 48: Liberty
    • 49: Park
    • 50: Garfield
    • 51: Jefferson
    • 52: Wibaux
    • 53: Golden Valley
    • 54: Mineral
    • 55: Petroleum
    • 56: Lincoln

To learn more about the history of license plates in Montana, click here.

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