24declarations
22major disasters
2emergencies
1965first on record
2020latest
By hazard
Flood12
Severe Storm7
Biological2
Severe Ice Storm1
Hurricane1
Tornado1
By decade
31960s
31970s
61990s
62000s
32010s
32020s
Population: 152,854 in April 2020, 160,080 in July 2024 (Census Bureau estimates).
Declarations naming Johnson County
| Declared | Number | Title | Hazard | Programs | Federal aid |
|---|---|---|---|---|---|
| Aug 17, 2020 | DR-4557-IA | Severe Storms | Severe Storm | IHPPAHM | $285.0 million |
| Mar 23, 2020 | DR-4483-IA | COVID-19 Pandemic | Biological | IHPPAHM | $592.5 million |
| Mar 13, 2020 | EM-3480-IA | COVID-19 | Biological | PA | — |
| Aug 5, 2014 | DR-4187-IA | Severe Storms, Tornadoes, Straight-Line Winds, and Flooding | Severe Storm | PAHM | $16.8 million |
| Jul 2, 2013 | DR-4126-IA | Severe Storms, Tornadoes, and Flooding | Severe Storm | PAHM | $23.3 million |
| May 31, 2013 | DR-4119-IA | Severe Storms, Straight-Line Winds, and Flooding | Flood | PAHM | $8.6 million |
| May 27, 2008 | DR-1763-IA | Severe Storms, Tornadoes, and Flooding | Severe Storm | IHPPAHM | $1.57 billion |
| Jan 4, 2008 | DR-1737-IA | Severe Winter Storm | Severe Ice Storm | PAHM | $32.7 million |
| Mar 14, 2007 | DR-1688-IA | Severe Winter Storms | Severe Storm | PAHM | $73.6 million |
| Sep 10, 2005 | EM-3239-IA | Hurricane Katrina Evacuation | Hurricane | PA | $244,048 |
| May 25, 2004 | DR-1518-IA | Severe Storms, Tornadoes, and Flooding | Severe Storm | IHPIAPAHM | $22.5 million |
| Jun 19, 2002 | DR-1420-IA | Severe Storms and Flooding | Flood | IAPAHM | $6.7 million |
| Jul 2, 1998 | DR-1230-IA | Severe Storms, Tornadoes and Flooding | Flood | IAPAHM | — |
| Jun 24, 1996 | DR-1121-IA | Severe Storms and Flooding | Severe Storm | PA | — |
| Jul 9, 1993 | DR-996-IA | Severe Storms & Flooding | Flood | IAPA | — |
| Jul 12, 1991 | DR-911-IA | Severe Storms & Flooding | Flood | IAPA | — |
| Sep 6, 1990 | DR-879-IA | Severe Storms & Flooding | Flood | IAPA | — |
| May 26, 1990 | DR-868-IA | Severe Storms & Flooding | Flood | IAPA | — |
| Jun 24, 1974 | DR-443-IA | Severe Storms & Flooding | Flood | IAPA | — |
| May 23, 1973 | DR-386-IA | Severe Storms & Flooding | Flood | IAPA | — |
| Aug 18, 1972 | DR-348-IA | Severe Storms & Flooding | Flood | PA | — |
| Aug 14, 1969 | DR-269-IA | Heavy Rains & Flooding | Flood | IAPA | — |
| May 29, 1968 | DR-240-IA | Tornadoes & Severe Storms | Tornado | IAPA | — |
| Apr 22, 1965 | DR-193-IA | Flooding | Flood | IAPA | — |