There's a lot of land in Wyoming. But if you're buying vacant land as opposed to buying a home, you may find it more difficult to obtain financing for the purchase. Lenders use the residence in most real estate transactions as collateral for the mortgage loan. If there's no structure on the property, there's no collateral. You may need to make a much bigger down payment in order to get the funding.
If you're buying land for agricultural purposes you may qualify for State or federal loan programs or incentives.