The county should be fully aware of this change in ownership because they recorded your deed, but in many cases – the city or township administration is in a completely separate office and they don't share the same systems with the county. As such, they need to be notified separately about the property's change in ownership (and if they aren't made aware of the change, they'll continue sending the property tax bills to the old owner).
If you have plenty of time and are not in a hurry to sell the property, and would like to do very little work I would suggest listing it with a broker. They will be able to create a listing for the property, answer phone call and emails, and handle the closing. The downside of this approach is comes at a price and you typically only get local exposure and most real estate agents who deal with both land and homes will most likely put more effort into selling their homes as the commissions are greater.
Bargain hunters: Of course, some buyers may find you even without a buyer’s agent. “If you have a great house, in a sought-after neighborhood, and you’re on a busy road where you’ll get a lot of visibility, then you might do fine working with only the unsigned homebuyers who discover your house on their own,” says Schorr. If you’ve got a charmer with a great kitchen in an affordable price range, they’ll find it online no matter how far off the beaten path you are.
You can also look to certain companies and organizations that have a concentration of people that may fall in the above mentioned roles such as investment companies (i.e. Charles Schwab, Fidelity), financial advising companies (i.e. Morgan Stanley, Merrill Lynch). There may be a higher concentration of people who can both afford and want to build their own custom homes or to build income-producing properties. Try linking yourself to financial advisors who may already know of people who have these types of dreams. This isn't a comprehensive answer of all the possibilities but just some thoughts. Good luck!