20. North Dakota
> Total lightning events in 2021: 3,196,746
> Lightning density: 45.22 events per square mile (25th lowest)
> Total area: 70,698 square miles
> Population: 762,062
19. Colorado
> Total lightning events in 2021: 3,451,756
> Lightning density: 33.16 events per square mile (22nd lowest)
> Total area: 104,094 square miles
> Population: 5,758,736
18. Arizona
> Total lightning events in 2021: 3,573,539
> Lightning density: 31.35 events per square mile (20th lowest)
> Total area: 113,990 square miles
> Population: 7,278,717
17. Kentucky
> Total lightning events in 2021: 3,703,268
> Lightning density: 91.65 events per square mile (13th highest)
> Total area: 40,408 square miles
> Population: 4,467,673
16. Tennessee
> Total lightning events in 2021: 3,914,936
> Lightning density: 92.89 events per square mile (12th highest)
> Total area: 42,144 square miles
> Population: 6,829,174
