I concluded a recent post saying if anyone ever asks you how many gun owners there are in America, you can tell them AT LEAST: 40% of households in America have guns in them and 30% of individuals in America personally own a gun.
Saying AT LEAST is crucial here, because these figures underestimate the actual rate of gun ownership in the United States. How badly they underestimate gun ownership we do not and cannot know precisely. My educated guess is that the underestimate is at least 10%, that 25% would not be an unreasonable amount, and more than 25% is likely.
So, if anyone ever asks you how many gun owners there are in America, you can tell them, No one really knows but PROBABLY:
44 to 50% of households (or more) in American have guns in them
33 to 37% of individuals (or more) in America own a gun

Widely circulated internet meme. Unattributed.