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FIPS 53045 · population 69,632 (2024)

Mason County, Washington

Mason County has been named in 32 federal declarations. Statewide declarations for Washington (46) are listed on the state page.

32declarations 28major disasters 3emergencies 1964first on record 2026latest

By hazard

Severe Storm13
Flood12
Biological2
Earthquake2
Fire1
Coastal Storm1
Volcanic Eruption1

By decade

21960s
31970s
11980s
51990s
82000s
42010s
92020s

Population: 65,718 in April 2020, 69,632 in July 2024 (Census Bureau estimates).

Declarations naming Mason County

DeclaredNumberTitleHazardProgramsFederal aid
Apr 7, 2026 DR-4906-WA Severe Storms, Straight-Line Winds, Flooding, Landslides, and Mudslides Flood IHPPA $24.2 million
Dec 12, 2025 EM-3629-WA Severe Storms, Straight-Line Winds, Flooding, Landslides, and Mudslides Flood PA —
Apr 28, 2024 DR-4775-WA Severe Winter Storms, Straight-Line Winds, Flooding, Landslides, and Mudslides Severe Storm PAHM $14.7 million
Jul 5, 2023 FM-5468-WA McEwan Fire Fire PAHM —
Mar 29, 2022 DR-4650-WA Severe Winter Storms, Snowstorms, Straight-Line Winds, Flooding Flood PAHM $35.6 million
Apr 8, 2021 DR-4593-WA Severe Winter Storm, Straight-Line Winds, Flooding, Landslides, and Mudslides Severe Storm PAHM $28.4 million
Apr 23, 2020 DR-4539-WA Severe Storms, Flooding, Landslides, and Mudslides Flood PAHM $62.9 million
Mar 22, 2020 DR-4481-WA COVID-19 Pandemic Biological IHPPAHM $3.03 billion
Mar 13, 2020 EM-3427-WA COVID-19 Biological PA —
Mar 4, 2019 DR-4418-WA Severe Winter Storms, Straight-Line Winds, Flooding, Landslides, Mudslides, Tornado Severe Storm PAHM $15.3 million
Feb 2, 2016 DR-4253-WA Severe Winter Storm, Straight-Line Winds, Flooding, Landslides, Mudslides, and a T Flood PAHM $11.7 million
Jan 15, 2016 DR-4249-WA Severe Storms, Straight-Line Winds, Flooding, Landslides, and Mudslides Severe Storm PAHM $27.6 million
Mar 5, 2012 DR-4056-WA Severe Winter Storm, Flooding, Landslides, and Mudslides Severe Storm PAHM $36.2 million
Mar 2, 2009 DR-1825-WA Severe Winter Storm and Record and Near Record Snow Severe Storm PAHM $31.5 million
Jan 30, 2009 DR-1817-WA Severe Winter Storm, Landslides, Mudslides, and Flooding Flood IHPPAHM $73.8 million
Dec 8, 2007 DR-1734-WA Severe Storms, Flooding, Landslides, and Mudslides Severe Storm IHPIAPAHM $92.0 million
Feb 14, 2007 DR-1682-WA Severe Winter Storm, Landslides, and Mudslides Severe Storm PAHM $34.9 million
May 17, 2006 DR-1641-WA Severe Storms, Flooding, Tidal Surge, Landslides, and Mudslides Severe Storm PAHM $7.2 million
Sep 7, 2005 EM-3227-WA Hurricane Katrina Evacuation Coastal Storm PA $1.7 million
Nov 7, 2003 DR-1499-WA Severe Storms and Flooding Severe Storm IHPIAPAHM $12.4 million
Mar 1, 2001 DR-1361-WA Earthquake Earthquake IAPAHM $85.6 million
Apr 2, 1997 DR-1172-WA Heavy Rains, Snow Melt, Flooding, Land & Mud Slides Flood IAPA —
Jan 17, 1997 DR-1159-WA Severe Winter Storms, Land & Muds Slides,flooding Severe Storm IAPA —
Jan 3, 1996 DR-1079-WA Severe Storms, High Wind, and Flooding Severe Storm IAPA —
Mar 4, 1993 DR-981-WA Severe Storms & High Wind Severe Storm PA —
Nov 26, 1990 DR-883-WA Severe Storms & Flooding Flood IAPA —
May 21, 1980 DR-623-WA Volcanic Eruption, Mt. St. Helens Volcanic Eruption IAPA —
Dec 31, 1979 DR-612-WA Storms, High Tides, Mudslides & Flooding Flood IA —
Dec 13, 1975 DR-492-WA Severe Storms & Flooding Flood IAPA —
Jan 25, 1974 DR-414-WA Severe Storms, Snowmelt & Flooding Flood IAPA —
May 11, 1965 DR-196-WA Earthquake Earthquake IAPA —
Dec 29, 1964 DR-185-WA Heavy Rains & Flooding Flood IAPA —