Methodology: 

To find the states where the most people bought guns last month, 24/7 Wall St. used FBI data from its National Instant Criminal Background Check System. To get a more accurate approximation of gun sales, we excluded several categories of checks, including pawn shop transactions, returns, rentals, and rechecks, which are conducted periodically by some states on existing permit holders. We ranked states based on the number of gun checks in April 2023 per 1,000 people in each state. 

Even after removing some types of checks that are clearly unrelated to a new firearm purchase, because every state has different laws in terms of when background checks are required and different accounting practices, background checks still only serve as a rough approximation of gun sales. 

The most glaring example of this is Illinois, which alone accounted for about half of the background checks in the country after excluding the aforementioned categories. Illinois no longer breaks down background checks separately, but did from July 2016 through July 2021. During the four full years of data, an average of 9.2% of Illinois’s non-private sale or gun-specific permit checks were non-rechecks. We applied that average to the most recent state figures to estimate Illinois’ count. This was done only because Illinois is such a glaring example of inconsistency and because there was historical data to produce an estimate. 

There are likely other states for which the background check figures listed are inflated or underestimated proxies for gun sales. 

Population data came from the U.S. Census Bureau’s Population and Housing Unit Estimates Program, and are for July of 2022, the most recent data available.