The USA has 50 states. Each state has its own legislature, a local version of Congress. Nebraska has a one-chamber (unicameral) legislature; the other 49 states have a two-chamber (bicameral) legislature. That adds up to 99 state legislative chambers, with a total of over 7,000 legislators serving in them. (Note that "legislature" is the organization and "legislator" is the person serving there.)
Click these links to see how education, age, gender, etc. vary among legislators from state to state.
As part of a research project, I collected data about all of those legislators in Feb 2011. As time goes by, this information will gradually become outdated. But the data I compiled is far too interesting to leave it sitting in a database on my computer. So here it is, publicly available for your edification.
If all you want is a list of state legislators, well, there you go.
Acknowledgements: Much of the information presented here was originally collected by Project Vote Smart, although I have modified, updated, and added to the data as needed.