I live in bergen county NJ and need only tax foreclosure properties (not pre, foreclosure, lien, or other) where can I buy those lists?:)

New Jersey sells liens, not properties. The person who buys the lien must foreclose and then hey can do with the property as they wish.

But, it's a good idea to contact owners who are about to lose their property to tax foreclosure and try to buy directly from them.

You can researcht the properties that have had liens sold against them at the county courthouse.

What is your purpose for these lists?

Investment

You need to research this much more thoroughly. Its rare that a property can be purchased for its tax arrears. If there is a mortgage on the property, the mortgage holder will pay the taxes to protect their interests. If there is no mortgage, the property is probably in such poor condition that its not worth investing in.l

There is no "government" lists of foreclosures. Banks not government forecloses. You may be able to research the court records of your county to see what property was foreclosed. But often you will need to work with a good real estate agent that knows that market.

If you get yourself a local real estate agent there is no doubt that they will be able to show you properties that meet your needs. They will have access to all of the forclosed properties that are listed by the local "reo agent" (real estate owned). REO agents list properties that are owned by the bank and are now for sale to the public. Banks will often have a site that will post the properties that they have on the market and they will have them listed with an agent. Often times I notice that the bank sites are not updated regularly as the multiple list systems that the agents use will be the most accurate place to find the status and price of a property.