The Fed said household net worth rose 14 percent in the full year, driven by a $5.6 trillion rise in the value of shares and a $2.3 trillion increase in the value of real estate.
The U.S. central bank has used ultra-loose monetary policy to encourage a recovery in the nation's housing market following a severe 2007-2009 recession, which has also helped drive U.S. stocks to record highs.
Increases in housing wealth make it easier for families to borrow against the equity in their homes, while overall wealth gains make consumers feel generally more comfortable spending their money. Many economists think consumers spend a few cents of every dollar they gain in wealth.
Growth in household debt slowed to an annual rate of 0.4 percent in the fourth quarter, from 3.0 percent previously, while home mortgage debt fell. Net debt hit $13.11 trillion.