According to Universal Music Canada, COMMUNION by YEARS & YEARS has sold 1,500,000 copies worldwide. The album sold best in United Kingdom (300,000 copies), Mexico (60,000 copies) and Poland (40,000 copies).
COMMUNION certifications and sales
| Country / region | Sales | Certification / source | Certification date / sales as of | |
 Austria |
7,500 | 1x Gold | 9 August, 2016 |
Austria Sales: 7,500
Certification / note: 1x Gold
Certification Date / sales as of: 9 August, 2016
|
 Denmark |
20,000 | 1x Platinum | 11 February, 2020 |
Denmark Sales: 20,000
Certification / note: 1x Platinum
Certification Date / sales as of: 11 February, 2020
|
 Mexico |
60,000 | 1x Platinum | 6 March, 2018 |
Mexico Sales: 60,000
Certification / note: 1x Platinum
Certification Date / sales as of: 6 March, 2018
|
 Poland |
40,000 | 2x Platinum | 28 March, 2018 |
Poland Sales: 40,000
Certification / note: 2x Platinum
Certification Date / sales as of: 28 March, 2018
|
 Sweden |
20,000 | 1x Gold | 2016 |
Sweden Sales: 20,000
Certification / note: 1x Gold
Certification Date / sales as of: 2016
|
 United Kingdom |
300,000 | 1x Platinum | 26 February,2016 |
United Kingdom Sales: 300,000
Certification / note: 1x Platinum
Certification Date / sales as of: 26 February,2016
|
| Worldwide sales | 1,500,000 | Universal Music Canada |
Total
Sales: 1,500,000
Source: Universal Music Canada
|
Year-end chart performance for COMMUNION
| Chart 2015 | Rank |
 Belgian Albums (Ultratop Flanders) |
56 |
| Danish Albums (Hitlisten) |
100 |
| UK Albums (Official Charts) |
20 |
| Chart 2016 | Rank |
| Danish Albums (Hitlisten) |
78 |
| UK Albums (Official Charts) |
34 |