320,814 wildfire and 347,766 structure-fire incidents attributed to arson / incendiarism across the US in 1992–2025. They scorched 10,782,417 acres. Linked to 526 civilian deaths.
Intentional fires distribute fairly evenly through the year.
50 states ranked by cumulative arson / incendiarism incidents.
Top 50 counties by cumulative arson / incendiarism incidents.
| # | County | State | Incidents | Acres |
|---|---|---|---|---|
| 1 | Los Angeles County | CA | 9,509 | 171,112 ac |
| 2 | Harris County | TX | 9,210 | 798 ac |
| 3 | San Joaquin County | CA | 8,002 | 178 ac |
| 4 | Riverside County | CA | 6,068 | 61,798 ac |
| 5 | Sacramento County | CA | 4,142 | 1,125 ac |
| 6 | King County | WA | 3,440 | 75 ac |
| 7 | Philadelphia County | PA | 3,399 | — |
| 8 | San Bernardino County | CA | 3,385 | 9,155 ac |
| 9 | Pierce County | WA | 3,257 | 385 ac |
| 10 | Orange County | FL | 3,237 | 4,394 ac |
| 11 | Ocean County | NJ | 2,989 | 27,287 ac |
| 12 | Tulare County | CA | 2,972 | 51,893 ac |
| 13 | Mobile County | AL | 2,960 | 33,081 ac |
| 14 | Oklahoma County | OK | 2,831 | — |
| 15 | Shelby County | TN | 2,600 | — |
| 16 | Fresno County | CA | 2,556 | 19,776 ac |
| 17 | Wayne County | MI | 2,309 | 42 ac |
| 18 | Pima County | AZ | 2,274 | 10,540 ac |
| 19 | McCurtain County | OK | 2,171 | 27,477 ac |
| 20 | Orange County | CA | 2,130 | 163 ac |
| 21 | Dallas County | TX | 2,095 | 43 ac |
| 22 | Cook County | IL | 2,075 | — |
| 23 | Tulsa County | OK | 1,970 | 975 ac |
| 24 | Marion County | IN | 1,794 | — |
| 25 | Montgomery County | OH | 1,750 | — |
| 26 | Ouachita Parish | LA | 1,747 | 165 ac |
| 27 | Maricopa County | AZ | 1,704 | 1,845 ac |
| 28 | San Diego County | CA | 1,685 | 10,327 ac |
| 29 | Pulaski County | AR | 1,658 | 380 ac |
| 30 | Pushmataha County | OK | 1,635 | 49,895 ac |
| 31 | Kern County | CA | 1,610 | 1,251 ac |
| 32 | Denver County | CO | 1,602 | 3 ac |
| 33 | Suffolk County | NY | 1,597 | 8,992 ac |
| 34 | Clark County | NV | 1,585 | 180 ac |
| 35 | Adair County | OK | 1,572 | 46,368 ac |
| 36 | San Francisco County | CA | 1,539 | 116 ac |
| 37 | Travis County | TX | 1,537 | 248 ac |
| 38 | Berkeley County | SC | 1,532 | 22,999 ac |
| 39 | Jackson County | MO | 1,493 | 1 ac |
| 40 | Shawnee County | KS | 1,485 | 1,103 ac |
| 41 | Santa Clara County | CA | 1,469 | 921 ac |
| 42 | Jefferson County | AL | 1,453 | 5,884 ac |
| 43 | Franklin County | OH | 1,445 | — |
| 44 | Atlantic County | NJ | 1,415 | 3,949 ac |
| 45 | Ramsey County | MN | 1,411 | 46 ac |
| 46 | Cuyahoga County | OH | 1,389 | — |
| 47 | Lamar County | MS | 1,379 | 21,380 ac |
| 48 | Pearl River County | MS | 1,376 | 28,204 ac |
| 49 | Harrison County | MS | 1,346 | 18,112 ac |
| 50 | Hamilton County | OH | 1,317 | — |
Top 50 cities (NFIRS structure-fire matches only).
| # | City | State | Incidents | Loss |
|---|---|---|---|---|
| 1 | Houston | TX | 7,169 | $18.9M |
| 2 | Stockton | CA | 7,166 | $6.9M |
| 3 | Los Angeles | CA | 3,607 | $10.9M |
| 4 | Philadelphia | PA | 3,399 | $10.8M |
| 5 | Tacoma | WA | 2,427 | $10.4M |
| 6 | Memphis | TN | 2,339 | $27.5M |
| 7 | Sacramento | CA | 2,106 | $6.3M |
| 8 | Phoenix | AZ | 1,915 | $186K |
| 9 | Tucson | AZ | 1,868 | $3.5M |
| 10 | Orlando | FL | 1,817 | $1.8M |
| 11 | Indianapolis | IN | 1,694 | $10.9M |
| 12 | Detroit | MI | 1,589 | $10.1M |
| 13 | Denver | CO | 1,579 | $6.0M |
| 14 | Tulsa | OK | 1,544 | $8.0M |
| 15 | San Francisco | CA | 1,513 | $17.9M |
| 16 | Oklahoma City | OK | 1,456 | $1.8M |
| 17 | Seattle | WA | 1,350 | $9.4M |
| 18 | Topeka | KS | 1,276 | $1.2M |
| 19 | Dayton | OH | 1,254 | $3.2M |
| 20 | Austin | TX | 1,212 | $9.8M |
| 21 | Columbus | OH | 1,207 | $8.2M |
| 22 | Mobile | AL | 1,172 | $2.1M |
| 23 | Las Vegas | NV | 1,135 | $13.8M |
| 24 | Little Rock | AR | 1,087 | $1.3M |
| 25 | Springfield | MO | 1,054 | $1.4M |
| 26 | Fresno | CA | 1,043 | $13.1M |
| 27 | Dallas | TX | 994 | $18.0M |
| 28 | Macon | GA | 889 | $5K |
| 29 | Las Cruces | NM | 883 | $591K |
| 30 | West Monroe | LA | 881 | $202K |
| 31 | Portland | OR | 871 | $14.1M |
| 32 | San Jose | CA | 867 | $3.5M |
| 33 | Chicago | IL | 857 | $2.3M |
| 34 | Chattanooga | TN | 824 | $236K |
| 35 | Milwaukee | WI | 810 | $8.9M |
| 36 | Cleveland | OH | 796 | $8.9M |
| 37 | Tallahassee | FL | 781 | $786K |
| 38 | Cincinnati | OH | 780 | $3.7M |
| 39 | Colorado Springs | CO | 744 | $8.1M |
| 40 | Vancouver | WA | 741 | $3.2M |
| 41 | Toledo | OH | 726 | $6.4M |
| 42 | Independence | MO | 724 | $2.1M |
| 43 | Nashville | TN | 697 | $2.8M |
| 44 | Kansas City | KS | 689 | $2.0M |
| 45 | Monroe | LA | 681 | $545K |
| 46 | Pine Bluff | AR | 666 | $2.3M |
| 47 | Montgomery | AL | 663 | $2.3M |
| 48 | Washington | DC | 648 | $8.0M |
| 49 | Lakewood | CO | 637 | $3.8M |
| 50 | Springfield | IL | 633 | $5.7M |
FireVerge's cause profiles use the 13 ignition categories defined by the FPA FOD (Fire Program Analysis Fire-Occurrence Database, 6th edition: 2.3M wildfire records, 1992–2020). NFIRS CAUSE_IGN codes from 11.4M structure incidents (2021–2025) are cross-classified into the same taxonomy where they align cleanly. Wildfires (FOD) and structure fires (NFIRS) are tracked as separate sources because their data captures very different things — FOD records every wildfire ignition in the US, while NFIRS counts emergency-department responses.