Fighters from the Syrian-Kurdish Popular Protection Units (YPG) have declared Kobani as liberated from Islamic State.
Officials said they had driven out the militants, ending four months of intensive fighting in the strategic town on the border with Turkey.
YPG spokesperson Polat Jan said on Twitter: "Congratulations to humanity, Kurdistan, and the people of Kobane on the liberation of Kobane."
A US defence department spokesperson declined to declare that the battle for Kobane was over.
"The battle continues. But as of now, friendly forces... I believe, have the momentum," Col Steve Warren told the Reuters news agency.
Only a few months ago, the fall of Kobane to Isis militants was widely seen as inevitable, however fierce resistance from the YPG, supported by Iraqi Kurd Peshmerga forces and airstrikes by a US-led coalition turned the tide.
Over 160,000 people fled the town and crossed over the border with Turkey after Isis first launched an assault in September.
US coalition conducts 27 air strikes against Islamic State militants (12 January 2015)
Germany votes to send troops to support Kurdish Peshmerga forces (21 December 2014)
Peshmerga forces deployed to defend Kobane from Islamic State militants (28 October 2014)