hyperlz

There's also Green Card PERM Salary data available on sites like http://visadoor.com.

H1B's typically have less years of experience compared to Green Card applications, even through both their titles might say Senior Software Engineer for example. If you are researching salaries, I would definitely look into PERM Salaries as well.

Glassdoor groups all the salaries reported for a title over the years in one bucket. Hence, I find the PERM and Labor data very helpful because you can see how salaries have changed over years.

Eg. http://visadoor.com/companies/facebook-inc

http://visadoor.com/h1b/index?company=Facebook%2C+Inc.&year=...

http://visadoor.com/greencards/index?company=Facebook%2C+Inc...

There are only 4 cases in CA in 2014 with salaries between 300K and 400K.

Some interesting stats here too:

http://visadoor.com/h1bvisa-by-companies-2014

http://visadoor.com/h1bvisa-by-states-2014

http://visadoor.com/h1bvisa-by-cities-2014

http://visadoor.com/h1bvisa-by-status-2014

Looking at http://visadoor.com/companies/google-inc for eg. doesn't look all that much different. May be only by ~10K, but that is probably expected between H1B and PERM.

http://visadoor.com/h1bvisa-database shows 3103 results for 2012. Probably more accurate.

I use http://visadoor.com for the same info, and I believe from the same official source:

http://visadoor.com/perm (Daily PERM results)

http://visadoor.com/h1bvisa-database (H1B )

http://visadoor.com/greencards-database (PERM, more detailed info)