Last Updated on September 22, 2023 by Christopher G Mendla
Robert Half has published a 2017 guide to technology salaries. The results are interesting to say the least.
https://www.roberthalf.com/sites/default/files/documents/2018_salary_guide_NA_technology_1.pdf
They also have an online technology salary calculator.
The recent trends with regard to H1B visas will probably result in higher salaries for US Citizens or permanent residents.