Ballotpedia has compiled data on the average net worth of our elected officials for the years 2004 to 2010. As the average net worth of Congress has increased since 2004, and held about even from 2007 to 2010, the average American family net worth dropped 40 percent from 2007 to 2010 to an average of $77,300.
In 2010, the average net worth for a U.S. senator was $13,224,333. The average net worth for a Democratic senator was $19,383,524, compared to $7,054,258 for a Republican senator. That’s a difference of $12.3 million.
The top ten richest senators, the highest seven of which are Democrats, from this Ballotpedia table:
Top 10 Senators in 2010