Reddit user academiaadvice maps the rate of gun homicides per 100,000 residents by state from 2007 to 2016 (above).

From 2015: Business Insider’s map showing, by state, the rate of gun ownership. Note that the two maps do not precisely correlate. [both via Boing Boing]

The Washington Post has maps of Marjory Stoneman Douglas High School in Parkland, Florida—where last week’s shooting took place—and its surrounding area.

We’ve seen a lot of maps correlating election results with other demographic or geographic data, but SurveyMonkey’s exit polling on the correlation between politics and gun ownership seems particularly stark, particularly in the context of recent events. In the 2016 U.S. presidential election, nothing predicted who you’d vote for more than whether you had a gun in the house. If only gun-owners voted, Trump would have swept 49 states; if only non-gun-owners voted, Clinton would have won at least 48.

“Over all, gun-owning households (roughly a third in America) backed Mr. Trump by 63 percent to 31 percent, while households without guns backed Mrs. Clinton, 65 percent to 30 percent, according to SurveyMonkey data,” the New York Times reported. “No other demographic characteristic created such a consistent geographic split.”

CityLab maps the geography of mass shootings in America since 1982, “both geographically and by number. ‘Mass shooting’ is defined as an incident during which four or more people are killed during a single attack in a public place, excluding the shooter. This is one of the more conservative counts—the data does not include shootings that took place during conventional crimes, like armed theft or gang violence.”

See also Vox’s collection of maps and infographics and Maps Mania’s roundup of gun violence maps.

As part of an article looking at semi-automatic weapons being sold online, NPR produced the above map, which shows the locations of classified listings on Armslist (a website described as “the Craigslist of guns”) between 12 and 15 June 2016 (i.e., immediately after the Orlando nightclub shooting). About 90 percent of Armslist listings had location data; about one in four of these listings are for semi-automatic weapons. [Maps on the Web]

Previously: In the U.S., Toddlers Shoot People Often Enough That It Can Be Mapped.

Of all the statistics related to gun violence in the U.S. that could be mapped, this has got to be one of the most bizarre: from the Washington Post’s Wonkblog, the number of times a toddler has shot someone since 2015, by state. [Landon Schnabel]