Fidelity: 401(k) Balances Grew 12% to Record High in 2012

The amounts that investors have saved through their 401(k)s vary widely depending on a participant's age. Fidelity said the average year-end balances were $143,300 for participants 55 and older and not yet retired; $120,400 for baby boomers born from 1946 to 1964; $59,100 for Generation Xers born from 1965 to 1978; and $15,400 for those in Generation Y, born from 1979 to 1991.

Looks like folks are planning on frugal living from their 401k balances.