This article claims:
In fact, the average 401(k) balance at Fidelity — which holds 16.2 million 401(k) accounts and is consistently ranked as the largest defined contribution record-keeper — was $106,500 as of September 2018.
If that still seems high, consider that averages tend to be skewed by outliers, and in this case, that number is being propped up by those rare millionaires. The median, which represents the middle balance between the highs and lows, is just $24,800.
In addition to the mean 401k balance ($106k), I am searching for the standard deviation. (Ideally, both as a function of age.)
Are there any sources of data available to the general public? I would really like to see a histogram of the data.
Does the Department of Labor release any summary statistics on 401k's?