Comment by exDM69

Neither is really true at least for Finland.

Addresses are not public information, you can opt out from having your info public. They are not even a national registry (one exists, not public) but your telco will put you in "the phone book" if you don't opt out.

Taxes are public information but only to a degree. You can opt out from having them shared en masse (primarily to the media) but you can still inquire someone else's paid taxes from the tax office but it requires you to know their full given name, year of birth and home town.

Salary is not public information, only the total amount of paid income taxes. You can correlate them to some degree but you won't be able to know how many jobs a person has or where their capital gains are from.

Access to this information can also be limited in exceptional cases (politicians, harassment victims, identity theft etc).