På toppen af deres karriere og før deres splittelse blev 2NE1 anset for at være en af de mest succesrige og populære pigegrupper i Sydkorea.<ref name=":0">{{Kilde nyheder|url=http://www.billboard.com/articles/columns/k-town/7865168/best-k-pop-girl-groups-decade|title=10 Best K-Pop Girl Groups of the Past Decade: Critic's Picks|last=Herman|first=Tamar|date=2017-07-12|work=Billboard|access-date=2017-10-05|archive-date=12. marts 2019|archive-url=https://web.archive.org/web/20190312114348/https://www.billboard.com/articles/columns/k-town/7865168/best-k-pop-girl-groups-decade|url-status=live}}</ref><ref>{{Kilde nyheder|url=http://www.cnn.com/2017/02/16/entertainment/south-korea-k-pop/index.html|title=K-pop's growing pains: Why Asia's biggest bands are splitting up|last=Liu|first=Marian|date=2017-02-17|work=CNN|access-date=2017-10-05|archive-date=19. januar 2019|archive-url=https://web.archive.org/web/20190119131625/https://www.cnn.com/2017/02/16/entertainment/south-korea-k-pop/index.html|url-status=live}}</ref> Efter at have solgt 66,5 millioner plader, er de en af de bedst sælgende pigegrupper nogensinde.<ref name="sales">{{Cite web|url=http://www.insidermonkey.com/blog/16-best-selling-girl-groups-of-all-time-377221/?singlepage=1|title=16 Best Selling Girl Groups of All Time|last=Dutta|first=Soma|date=15. oktober 2015|website=Insider Monkey|access-date=17. juni 2017|archive-date= 2. juli 2017|archive-url=https://web.archive.org/web/20170702061754/http://www.insidermonkey.com/blog/16-best-selling-girl-groups-of-all-time-377221/?singlepage=1|url-status=live}}</ref> Magasinet [[Billboard (magasin)|''Billboard'']] rangerede 2NE1 som en af de bedste Kpop-pigegrupper i det forløbne årti,<ref name=":0" /> mens ''[[The New York Times]]'' kalder 2NE1's præstation på [[Prudential Center]] i [[New Jersey]] en af de "Bedste koncerter i 2012".<ref>{{Kilde nyheder|url=https://www.nytimes.com/2012/12/27/arts/music/the-best-concerts-of-2012-as-seen-by-times-critics.html|title=The Best Concerts of 2012, as Seen by Times Critics|access-date=6. januar 2013|publisher=[[The New York Times]]|quote=This was the year K-pop arrived — not in the form of "Gangnam Style," which was everywhere and yet completely evanescent — but in these arena shows, which were full of thousands of young, paying fans eager to see the girls of 2NE1 and the boys of BigBang, groups with zero American hits between them, but rabid American followings all the same.|archive-date= 5. januar 2013|archive-url=https://web.archive.org/web/20130105150455/http://www.nytimes.com/2012/12/27/arts/music/the-best-concerts-of-2012-as-seen-by-times-critics.html|url-status=live}}</ref>
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