The celebrations for the "Dear Leader" included an ice sculpture festival, CNN reported, quoting the official KCNA news agency.
A documentary on Kim's "immortal exploits" was shown to senior Communist party officials.
On the occasion of his leader's the birthday, Kim Yong Nam, president of the Presidium of the Supreme People's Assembly, said the country would make efforts to end hostility with the United States through dialogue and negotiation, China's state-run Xinhua news agency quoted a senior official as saying.
Kim underscored the need to develop friendly relations with other countries on the basis of independence, peace and friendship, the report said. He said North Korea is steadfast in its resolve to improve inter-Korean relations and called for cooperation for national reunification at an early date.