Ideal Poultry in Cameron, TX hatches year-round. http://www.idealpoultry.com/ They have a lot more variety than most hatcheries, though many breeds are sold out until next year. They are having a special on Barred Rock pullets, Black Sex Link pullets, Rhode Island Red pullets, and assorted straight-run bantams right now.
If you are worried about recieving a box of frozen chicks in the mail ( depending on where you live and how cold it gets) think about doing a wanted ad for chicks on craigs list, and having someone firing up the incubator for you and hatching, or slipping a few under a broody hen. SHipping when 1/2 the country is freezing can be traumatic. Or not, depending on the weather and how many chicks you are sending.
It definitely depends on where. I'm located in Georgia, and I hatch year-round, as long as the ladies are laying. However, I only have leghorns, plymouth rock, and easter eggers laying right now. I also don't ship. But I also know I'm not the only one in this area who hatches year-round. So I'm sure there is at least one person in your area as well.