GREATEST HITS by MARIAH CAREY has sold 2,337,470 copies in 9 countries. The album sold best in United States (1,230,000 copies), United Kingdom (300,000 copies) and Japan (219,268 copies).
GREATEST HITS certifications and sales
| Country / region | Sales | Certification / source | Certification date / sales as of | |
 Australia |
210,000 | 3x Platinum | 2019 |
Australia Sales: 210,000
Certification / note: 3x Platinum
Certification Date / sales as of: 2019
|
 Brazil |
125,000 | 1x Platinum | 2002 |
Brazil Sales: 125,000
Certification / note: 1x Platinum
Certification Date / sales as of: 2002
|
 France |
100,000 | 1x Gold | 12 February, 2002 |
France Sales: 100,000
Certification / note: 1x Gold
Certification Date / sales as of: 12 February, 2002
|
 Ireland |
15,000 | 1x Platinum | 2005 |
Ireland Sales: 15,000
Certification / note: 1x Platinum
Certification Date / sales as of: 2005
|
 Japan |
219,268 | 1x Platinum | December 2001 |
Japan Sales: 219,268
Certification / note: 1x Platinum
Certification Date / sales as of: December 2001
|
 Korea |
123,202 | RIAK / Gaon charts |
Korea Sales: 123,202
Certification / note: RIAK / Gaon charts
Certification Date / sales as of:
|
|
 New Zealand |
15,000 | 1x Platinum |
New Zealand Sales: 15,000
Certification / note: 1x Platinum
Certification Date / sales as of:
|
|
 United Kingdom |
300,000 | 1x Platinum | 2 December, 2005 |
United Kingdom Sales: 300,000
Certification / note: 1x Platinum
Certification Date / sales as of: 2 December, 2005
|
 United States |
1,230,000 | 2x Platinum | 9 October, 2019 |
United States Sales: 1,230,000
Certification / note: 2x Platinum
Certification Date / sales as of: 9 October, 2019
|
| Total sales | 2,337,470 | (in 9 countries) |
Total
Sales: 2,337,470
(in 9 countries)
|
Year-end chart performance for GREATEST HITS
| Chart 2002 | Rank | Sales |
| Japanese Albums (Oricon) |
93 | 217,890 |
| South Korean International Albums (Gaon) |
12 | 78,255 |
| Chart 2005 | Rank | Sales |
| UK Albums |
44 | 440,000 |
| UK Artist Albums |
40 | 442,305 |