The average net worth by age for Americans is $76,300 for those under age 35, $436,200 for those ages 35 to 44, $833,200 for those ages 45 to 54, $1,175,900 for those ages 55 to 64, $1,133,700 for those ages 65 to 74 and $977,600 for those age 75 and above.