Montana: 56 counties covered

Across 56 Montana counties with a FEMA flood score, the average national percentile is 31.9 — but that average hides real spread between counties, which is why each one gets its own page rather than a single statewide number.

• Yellowstone County — 84.5th percentile, Relatively Moderate
• Gallatin County — 64.2th percentile, Relatively Low
• Missoula County — 68.6th percentile, Relatively Low
• Flathead County — 79.8th percentile, Relatively Moderate
• Cascade County — 83.4th percentile, Relatively Moderate
• Lewis and Clark County — 64.6th percentile, Relatively Low
• Ravalli County — 52th percentile, Relatively Low
• Silver Bow County — 21.7th percentile, Very Low
• Lake County — 57.2th percentile, Relatively Low
• Lincoln County — 65.5th percentile, Relatively Low
• Park County — 55.6th percentile, Relatively Low
• Hill County — 43.4th percentile, Relatively Low
• Sanders County — 61.9th percentile, Relatively Low
• Glacier County — 45.5th percentile, Relatively Low
• Jefferson County — 29.4th percentile, Very Low
• Big Horn County — 55.1th percentile, Relatively Low
• Custer County — 38.3th percentile, Relatively Low
• Fergus County — 36.5th percentile, Relatively Low
• Carbon County — 72.3th percentile, Relatively Low
• Richland County — 25.1th percentile, Very Low
• Roosevelt County — 26.6th percentile, Very Low
• Beaverhead County — 36.3th percentile, Relatively Low
• Deer Lodge County — 10.5th percentile, Very Low
• Madison County — 29.8th percentile, Very Low
• Stillwater County — 36.2th percentile, Relatively Low
• Dawson County — 28.1th percentile, Very Low
• Broadwater County — 19.1th percentile, Very Low
• Rosebud County — 56.5th percentile, Relatively Low
• Valley County — 34.2th percentile, Very Low
• Powell County — 15.8th percentile, Very Low
• Blaine County — 46.5th percentile, Relatively Low
• Teton County — 32.2th percentile, Very Low
• Pondera County — 29.3th percentile, Very Low
• Chouteau County — 50.4th percentile, Relatively Low
• Musselshell County — 15.5th percentile, Very Low
• Mineral County — 16th percentile, Very Low
• Toole County — 17.8th percentile, Very Low
• Phillips County — 39.8th percentile, Relatively Low
• Sweet Grass County — 19.7th percentile, Very Low
• Granite County — 11.1th percentile, Very Low
• Sheridan County — 13.3th percentile, Very Low
• Fallon County — 5.5th percentile, Very Low
• Judith Basin County — 12.6th percentile, Very Low
• Meagher County — 9.7th percentile, Very Low
• Wheatland County — 12.2th percentile, Very Low
• Liberty County — 11.9th percentile, Very Low
• Powder River County — 7.8th percentile, Very Low
• McCone County — 5.6th percentile, Very Low
• Daniels County — 3th percentile, Very Low
• Carter County — 4.1th percentile, Very Low
• Garfield County — 5.4th percentile, Very Low
• Prairie County — 5.8th percentile, Very Low
• Wibaux County — 3.7th percentile, Very Low
• Golden Valley County — 5.6th percentile, Very Low
• Treasure County — 2.5th percentile, Very Low
• Petroleum County — 2th percentile, Very Low