What was the last port city the union captured?

The last port city captured by the Union during the American Civil War was Wilmington, North Carolina. The Union forces took control of Wilmington on February 22, 1865, following a series of military engagements. This capture was significant as Wilmington had been a crucial supply port for the Confederacy. The fall of Wilmington further restricted Confederate access to resources and contributed to the eventual defeat of the Confederacy.