The Census Committee of the SCA has released the first results of the census taken in 2010. The results can be downloaded from the SCA.org website in various formats.
From the website:
The Census Committee is proud to present the first release of data from the SCA 2010 Census. Accompanying this release are a slide deck with charts and graphs; a key findings document that also includes thought starters; a copy of the initial survey; a basic data run of the responses to the survey and some in-depth data tables which offer insights into further findings.