There is no one source you can go to for this answer.
about 22.5 percent of the population in the State of California own guns. Second highest in the U.S.
California does not require registration of ordinary rifles and shotguns- no way to answer your question.
No. There is no registration of gun owners
How di you get gun rights back in the state of California
I question this ad the US Census Bureau says that there are only 12,831,970 people in the state.
Roughly 1.4 million LEGAL gun owners.
California traditionally has been among states with the worst reputation in regards to the rights of gun owners. So, short answer, yes.
Any number put here will not remain accurate, as anyone can register a gun in Oregon at any time.
Gun owners aren't "registered" like cars. One estimate is that there are @ 4 million or so gun owners.
Since, like most states, Utah does not require registration of guns or gun owners, there is no one source of reliable information on the number of gun owners in Utah. However, some studies indicate that nearly half of the households in Utah own at least one firearm.
California
depending on how you count, either WY or TX
no records. Sorry
A couple of million