Meet levels.fyi – they collect actual like for like data on salaries, benefits, levels etc. for the US tech industry.
They use this to help people negotiate salaries (how they monetise).
Levels recently published a report for 2021 that has some fascinating data (h/t The Diff).
The table attached shows entry level engineer salaries.
Lots of other interesting stats – comp has been rising (generally highest entry-level salaries are growing +3.4% annualised since 2019) and the Bay Area still wins (40% higher than LA for example).