Bay Area Tech H1B: around $100-120K (http://www.myvisajobs.com/Visa-Sponsor/Bay-Area-TechWorkers/62793.htm)
Bay Area Medical H1B: $200-300K (https://www.myvisajobs.com/Visa-Sponsor/Bay-Area-Medical/62777.htm)
Median TechBro: $142K (2017, [
www.entrepreneur.com]). Average (mean) is usually higher, and can be skewed; Zuck's stock options alone pushed the San Mateo County tech average up by over $80K.
Santa Rosa (Based on Census, via deptofnumbers.com)
2016 Median Rent: $1526 ... +9.47%/1 year ... +18.11%/3 years
2016 Average Rent: $1462
2016 Rental Vacancy Rate: 2.67%
(so, $18312/year, requiring $73248 median income at 25%)
2016 Median Household Income: $73929 .. +9.50%/1 year ... +17.56%/3 years
2016 Median Rent as % of Median Household Income: 24.77%
Interesting that the Census-based numbers are so much lower than some others. For instance:
Zillow (9/30/18)
Median Santa Rosa (city) home price: $625,000
Median Santa Rosa (city) rent: $2,650
(at the standard 25%, that median rent requires a $127,200 annual income)