united states - Gathering data for large number of census block groups?

I would like to collect some census data for every block group in New England. I'm primarily interested in median income and median age, and ideally I'd like a large .csv file with one row per census block group and one column per variable (e.g. id variables, median_income, etc.).

American FactFinder seems almost useless for this kind of thing.

Does the census have a "bulk data export" option?