You can go to bloodhero.com and look it up, as well as scheduling appointments... even though with an appointment, unless it's early morning, you're likely to have quite a wait after your appointment time. :P
Hey if you would like to donate a blood drive van comes to Stockman Bank every so many months and anyone can come and donate. Its almost like a free blood test too, because it is all tested and you get to know if there is anything wrong or not. Kinda neat! If you are interested you could come down and ask how to get signed up for when it comes down next.