An easy way to find a farm to work or live on long-term is to use a farm lease website such as US Farm Lease. You can also contact an agricultural extension office for the area.
A variety of regional websites work to match farmers and land. Most focus on a specific region and allow you to search for the kind of land you need. Networking with local farmers and people who work in closely related industries, such as feed stores, can also be helpful. Some farmers have land that is not being used that they may willing to lease but are not advertising. Partnership plans pair young farmers with established ones nearing retirement to help run the farm.
Be realistic about your needs and plans before you begin your search. You need to be able to handle the land and supply any necessary equipment that does not come with the land. You may also want to consider a caretaker job instead of a lease, although many of these are seasonal or temporary.
Short-term farmhouse rentals are often easier to find. If you are planning a wedding or other event, look at event-planning websites. Vacation rental websites also often list farmhouses and farm destinations.