About 37% of US households had a gun in early 2013, one study found. Nearly one-fourth of the adults who were surveyed reported that they personally owned a gun, and about 13% claimed it was owned by another person in the household. The US has the highest number of owned guns and the highest per-capita rate of gun ownership in the world. In the US, there are an estimated 270 million civilian firearms, or about 90 for every 100 people.
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