Declaration of Independence Wikimedia Commons How old were the Founding Fathers when the Declaration of Independence was signed in 1776?

Some were older, like Thomas Jefferson who was 33, John Hancock who was 39, or Benjamin Franklin who was 70. Others were shockingly young — even teenagers. James Monroe, for example, was 18 and Alexander Hamilton was 21.

All Things Liberty compiled a list of the ages of key people during the American Revolution (a period spanning from 1765–1783) when the Declaration of Independence was signed.

Here's everyone who was younger than 30 on July 4, 1776, including a few signers of the nation-changing document: