How many people in America own a gun?

Since there is, by law, no general registration of firearms in the USA - there are only estimates, and they range from a low of 76 million to a high of over 120 million gun owners.

Current surveys (2010 and later) put the percentage of households that had a gun in them in the low 40s (40-45%) and the number of adults who said they personally owned a gun in the low 30s (30-34%). Given that roughly 75% of the population is an adult, that means that there are about 225 million adults, and, thus, between 67 and 77 million adults who own a gun.

Note that the number of people owning guns (both as a percentage and in absolute numbers) has been slowly falling for the past 30 years. The total number of guns owned by an individual who has at least one gun, however, has skyrocketted.