NO. 1 by BOA (보아) has sold 544,853 copies in Korea.
NO. 1 certifications and sales
| Country / region | Sales | Certification / source | Certification date / sales as of | |
 Korea |
544,853 | RIAK / Gaon charts |
Korea Sales: 544,853
Certification / note: RIAK / Gaon charts
Certification Date / sales as of:
|
|
| Total sales | 544,853 | (in 1 country) |
Total
Sales: 544,853
(in 1 country)
|
Year-end chart performance for NO. 1
| Chart 2002 | Rank | Sales |
| South Korean Albums (Gaon) |
4 | 544,853 |