IOWA by SLIPKNOT has sold 1,790,000 copies in 9 countries. The album sold best in United States (1,000,000 copies), United Kingdom (300,000 copies) and Germany (150,000 copies).
IOWA certifications and sales
| Country / region | Sales | Certification / source | Certification date / sales as of | |
 Australia |
35,000 | 1x Gold | NOVEMBER 2001 |
Australia Sales: 35,000
Certification / note: 1x Gold
Certification Date / sales as of: NOVEMBER 2001
|
 Belgium |
25,000 | 1x Gold |
Belgium Sales: 25,000
Certification / note: 1x Gold
Certification Date / sales as of:
|
|
 Canada |
100,000 | 1x Platinum | 2001 |
Canada Sales: 100,000
Certification / note: 1x Platinum
Certification Date / sales as of: 2001
|
 France |
50,000 | 1x Silver | 2002 |
France Sales: 50,000
Certification / note: 1x Silver
Certification Date / sales as of: 2002
|
 Germany |
150,000 | 1x Gold | 2010 |
Germany Sales: 150,000
Certification / note: 1x Gold
Certification Date / sales as of: 2010
|
 Japan |
100,000 | 1x Gold | December 2001 |
Japan Sales: 100,000
Certification / note: 1x Gold
Certification Date / sales as of: December 2001
|
 Netherlands |
30,000 | 1x Gold | 2008 |
Netherlands Sales: 30,000
Certification / note: 1x Gold
Certification Date / sales as of: 2008
|
 United Kingdom |
300,000 | 1x Platinum | 23 March, 2018 |
United Kingdom Sales: 300,000
Certification / note: 1x Platinum
Certification Date / sales as of: 23 March, 2018
|
 United States |
1,000,000 | 1x Platinum | 10 October, 2001 |
United States Sales: 1,000,000
Certification / note: 1x Platinum
Certification Date / sales as of: 10 October, 2001
|
 Europe (IMPALA) |
500,000 | 1x Platinum |
Europe (IMPALA) Sales: 500,000
Certification / note: 1x Platinum
Certification Date / sales as of:
|
|
| Total sales | 1,790,000 | (in 9 countries) |
Total
Sales: 1,790,000
(in 9 countries)
|