Warren graduated from Harvard University in 1817, studied law with Joshua Thomas in Plymouth and Levi Lincoln Jr. in Worcester, and was admitted to the bar.
He settled in New Bedford, where he practiced law in partnership with Lemuel Williams, and later with Thomas Dawes Eliot.
Warren married Abby Burr Hedge of Plymouth on December 27, 1825.
In 1839 he was appointed Judge of the Common Pleas Court, and he served until 1844.
After leaving the bench, Warren moved to Boston and practiced law with Augustus H. Fiske and Benjamin Rand.