In general, no.
But, in many cases, yes. If you are an employee of the State of Oregon, your salary to the penny is a public record and accessible online. Of course, your salary may not be your only source of income.
Many companies, especially unionized shops, have fairly narrow salary ranges for specific jobs and titles. If you are a Press Operator Grade 3, then you make between $X and $Y where the difference between X and Y may be only a couple of thousand dollars per year. Of course, those salary brackets are published and so, if you know someone's job title, which is also usually published, you can know their salary within a couple of thousand dollar per year. Again, your salary may not be to totality of your income.