The North will send 24 officials and 21 media representatives.
At the opening ceremony, the joint delegation "will be led into the Olympic stadium by the Korean unification flag" carried together by an athlete from each country, the IOC said. There will be one female and one male athlete flagbearer leading the delegation in a special uniform with the Korean Unification Flag.
Under a deal brokered by the International Olympic Committee, the two Koreas will field their first unified Olympic team, in women's hockey, and have their athletes march together under the joint flag depicting their peninsula during the February 9 opening ceremony.
The Koreas agreed Wednesday on the North's participation in the first Winter Olympics to be held in the South and also on a joint women's hockey team.
The acronym "COR" will be used both here and for the ice hockey team but athletes will compete separately in all other events.
President Moon called North Korea's participation in the upcoming PyeongChang Winter Olympic Games a valuable and dramatic opportunity for inter-Korean dialogue to establish peace in the region, amid the high tensions between Seoul and Pyongyang.
"Today marks a milestone on a long journey", International Olympic Committee president Thomas Bach said.
The two countries had already agreed to compete under a unified Korean flag.
Olympic and government officials, along with sports ministers, met at the International Olympic Committee (IOC) headquarters in Switzerland on Saturday. The inspectors originally planned to arrive Saturday, but briefly put off the visit with no explanation.
Security Council measures now in force prohibit cash transfers to the North, while the United Nations has also drawn up a blacklist of officials tied to the Stalinist Pyongyang regime, individuals whose presence at the Games will create potential stumbling blocks. While South Korea hopes to use the games to improve relations with its rival after a year of animosity over North Korea's rapidly expanding nuclear program, some experts view Kim's overture as an attempt to weaken USA -led worldwide sanctions against the North and buy time to further advance his nuclear weapons program.
The deal over the unified women's ice hockey team brought criticism that Seoul is depriving some of its own players of the chance to compete in the Olympics for the sake of politics.
Moon Jae-in, president of South Korea, wanted reunification of the two Koreas and Kim Jong-un has extended an olive branch. The game day roster will continue to be 22 and Murray has to include at least three North Koreans.
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