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Flood data for Montana

Published NFIP policy and loss records, alongside a way to check the map.

Average annual premium and federal policy fee per policy unit

$965

As of 2026-08-31. A portfolio average, not a quote for a home.

Policies in force, including condo units
3,636
Cumulative recorded losses
2,220
Net dollars paid
$19,044,099

Cumulative losses in the HUDEX report through August 31, 2026. Loss counts include claims closed without payment. No annual series or first loss year is stated in this report.

Find a flood zone in Montana.

U.S. addresses only. Include a ZIP for a more precise match.

County policy and loss records

Montana NFIP records as of 2026-08-31
CountyPremium + fee / unitPolicy unitsRecorded losses
Custer County$580704156
Flathead County$904538131
Gallatin County$76839177
Cascade County$1,221304256
Yellowstone County$1,061281261
Missoula County$842232172
Lewis and Clark County$947190103
Park County$1,678129144
Ravalli County$84910136
Carbon County$1,9267563
Stillwater County$1,8336153
Lincoln County$1,6685738
Madison County$922496
Beaverhead County$8393712
Fergus County$1,3593527
Mineral County$1,675315
Lake County$1,0863018
Silver Bow County$7563010
Sanders County$1,3292810
Musselshell County$8202663
Jefferson County$1,076235
Phillips County$8222250
Teton County$838225
Powell County$8592119
Valley County$1,28221270
Blaine County$1,0561855
Deer Lodge County$5871810
Sweet Grass County$1,6561823
Granite County$1,378157
Meagher County$1,057156
Hill County$1,0821416
Richland County$9701211
Rosebud County$9771011
Broadwater County$1,14094
Dawson County$88598
Roosevelt County$91999
Wheatland County$550819
Big Horn County$960718
Garfield County$73975
Wibaux County$2,00263
Chouteau County$1,01740
Liberty County$1,62644
Pondera County$2,73840
Powder River County$709411
Fallon County$1,02931
Glacier County$2,12725
Golden Valley County$1,01910
Petroleum County$1,38910
Sheridan CountyNot available01
Treasure CountyNot available01

State policy mix by rated zone group

These are insured policy units grouped by their rated zones, not a percentage of the state’s land or homes.

NFIP rated zone groups, 2026-08-31
Rated groupPolicy unitsShare of insured units
All A zones combined2,63372.4%
Zone D260.7%
Unknown or invalid rated zone631.7%
X, B and C zones combined91425.1%

Largest recorded loss years

Published net claim payments from 1978 through 2026, grouped by year of loss. Dollar amounts are nominal. The 2026-09-08 OpenFEMA claims release is a separate population from the policy workbook above.

2022$6,928,5452011$4,250,3091997$2,329,5852018$1,121,3321979$677,290
All published years and net payments
Montana claims history
Year of lossNet payments
1978$626,582
1979$677,290
1980$37,854
1981$308,788
1982$38,176
1983$2,683
1984$95
1985$29,110
1986$155,309
1989$60,846
1990$68,150
1991$69,092
1992$12,972
1993$6,871
1994$0
1995$38,650
1996$609,118
1997$2,329,585
1998$32,047
1999$20,059
2000$0
2001$3,486
2002$4,444
2003$63,256
2004$1,196
2005$19,644
2006$16,927
2007$79,541
2008$126,749
2009$14,038
2010$26,328
2011$4,250,309
2012$50,220
2013$143,694
2014$468,983
2015$23,373
2016$76,593
2017$26,897
2018$1,121,332
2019$168,415
2020$55,662
2021$1,947
2022$6,928,545
2023$126,142
2024$17,643
2025$0
2026$105,461

Records without payment are included in counts. Missing county records are retained in national controls and are not allocated to counties. OpenFEMA NFIP redacted claims V3.

Data and methodology

Complete official HUDEX report, summed across its community rows within each geocoded county FIPS. Policy Count includes condominium units under master policies. Average premium is Total Premium + Federal Policy Fee divided by Policy Count; this is an aggregate per policy unit, not a property quote. Loss counts include losses closed without payment. Total Net Dollars Paid is cumulative in this report, including the source's adjustments. The report does not specify the first loss year or split losses by year, so a starting year and annual breakdown are not inferred. Unassigned county records are retained in state totals separately. No record sampling.

Official NFIP policy and loss geography workbook

Read the full methodology and coverage limits