CHICAGO TRANSIT AUTHORITY by CHICAGO has sold 2,100,000 copies in Canada and United States.
CHICAGO TRANSIT AUTHORITY certifications and sales
| Country / region | Sales | Certification / source | Certification date / sales as of | |
 Canada |
100,000 | 1x Platinum | 1977 |
Canada Sales: 100,000
Certification / note: 1x Platinum
Certification Date / sales as of: 1977
|
 United States |
2,000,000 | 2x Platinum | 21 November, 1986 |
United States Sales: 2,000,000
Certification / note: 2x Platinum
Certification Date / sales as of: 21 November, 1986
|
| Total sales | 2,100,000 | (in 2 countries) |
Total
Sales: 2,100,000
(in 2 countries)
|
Year-end chart performance for CHICAGO TRANSIT AUTHORITY
| Chart 1969 | Rank |
| US Albums (Billboard 200) |
29 |
| Chart 1970 | Rank |
| US Albums (Billboard 200) |
23 |
| Chart 1971 | Rank |
| US Albums (Billboard 200) |
15 |