CHICAGO 18 by CHICAGO has sold 541,800 copies in Japan and United States.
CHICAGO 18 certifications and sales
| Country / region | Sales | Certification / source | Certification date / sales as of | |
 Japan |
41,800 | Oricon charts |
Japan Sales: 41,800
Certification / note: Oricon charts
Certification Date / sales as of:
|
|
 United States |
500,000 | 1x Gold | 1 December, 1986 |
United States Sales: 500,000
Certification / note: 1x Gold
Certification Date / sales as of: 1 December, 1986
|
| Total sales | 541,800 | (in 2 countries) |
Total
Sales: 541,800
(in 2 countries)
|
Year-end chart performance for CHICAGO 18
| Chart 1987 | Rank |
| US Albums (Billboard 200) |
56 |