According to Sony Music Japan, Billboard, MILLENNIUM by BACKSTREET BOYS has sold 40,000,000 copies worldwide. The album sold best in United States (13,840,000 copies), Canada (1,000,000 copies) and Japan (810,350 copies).
MILLENNIUM certifications and sales
| Country / region | Sales | Certification / source | Certification date / sales as of | |
 Argentina |
180,000 | 3x Platinum | 10 April, 1999 |
Argentina Sales: 180,000
Certification / note: 3x Platinum
Certification Date / sales as of: 10 April, 1999
|
 Australia |
210,000 | 3x Platinum | JUNE 2000 |
Australia Sales: 210,000
Certification / note: 3x Platinum
Certification Date / sales as of: JUNE 2000
|
 Austria |
25,000 | 1x Gold | 1 June, 1999 |
Austria Sales: 25,000
Certification / note: 1x Gold
Certification Date / sales as of: 1 June, 1999
|
 Belgium |
100,000 | 2x Platinum |
Belgium Sales: 100,000
Certification / note: 2x Platinum
Certification Date / sales as of:
|
|
 Brazil |
500,000 | 2x Platinum | 1999 |
Brazil Sales: 500,000
Certification / note: 2x Platinum
Certification Date / sales as of: 1999
|
 Canada |
1,000,000 | 1x Diamond | October 21, 1999 |
Canada Sales: 1,000,000
Certification / note: 1x Diamond
Certification Date / sales as of: October 21, 1999
|
 Chilie |
57,665 | 1x Platinum / Year-end list | 1999 |
Chilie Sales: 57,665
Certification / note: 1x Platinum / Year-end list
Certification Date / sales as of: 1999
|
 Colombia |
20,000 | 1x Platinum |
Colombia Sales: 20,000
Certification / note: 1x Platinum
Certification Date / sales as of:
|
|
 Denmark |
50,000 | 1x Platinum |
Denmark Sales: 50,000
Certification / note: 1x Platinum
Certification Date / sales as of:
|
|
 Finland |
42,525 | IFPI Finland |
Finland Sales: 42,525
Certification / note: IFPI Finland
Certification Date / sales as of:
|
|
 Germany |
750,000 | 3x Gold | 2000 |
Germany Sales: 750,000
Certification / note: 3x Gold
Certification Date / sales as of: 2000
|
 Hong Kong |
40,000 | 2x Platinum |
Hong Kong Sales: 40,000
Certification / note: 2x Platinum
Certification Date / sales as of:
|
|
 India |
60,000 | 3x Platinum |
India Sales: 60,000
Certification / note: 3x Platinum
Certification Date / sales as of:
|
|
 Indonesia |
150,000 | 3x Platinum |
Indonesia Sales: 150,000
Certification / note: 3x Platinum
Certification Date / sales as of:
|
|
 Ireland |
30,000 | 1x Platinum |
Ireland Sales: 30,000
Certification / note: 1x Platinum
Certification Date / sales as of:
|
|
 Italy |
300,000 | 3x Platinum |
Italy Sales: 300,000
Certification / note: 3x Platinum
Certification Date / sales as of:
|
|
 Japan |
810,350 | 4x Platinum | November 1999 |
Japan Sales: 810,350
Certification / note: 4x Platinum
Certification Date / sales as of: November 1999
|
 Korea |
300,000 | RIAK / Gaon charts |
Korea Sales: 300,000
Certification / note: RIAK / Gaon charts
Certification Date / sales as of:
|
|
 Malaysia |
100,000 | 4x Platinum |
Malaysia Sales: 100,000
Certification / note: 4x Platinum
Certification Date / sales as of:
|
|
 Mexico |
675,000 | 4x Platinum + 1x Gold | 15 December, 2000 |
Mexico Sales: 675,000
Certification / note: 4x Platinum + 1x Gold
Certification Date / sales as of: 15 December, 2000
|
 Netherlands |
160,000 | 2x Platinum | 2000 |
Netherlands Sales: 160,000
Certification / note: 2x Platinum
Certification Date / sales as of: 2000
|
 New Zealand |
45,000 | 3x Platinum |
New Zealand Sales: 45,000
Certification / note: 3x Platinum
Certification Date / sales as of:
|
|
 Norway |
50,000 | 1x Platinum | 2000 |
Norway Sales: 50,000
Certification / note: 1x Platinum
Certification Date / sales as of: 2000
|
 Poland |
50,000 | 1x Gold | 1999 |
Poland Sales: 50,000
Certification / note: 1x Gold
Certification Date / sales as of: 1999
|
 Portugal |
40,000 | 1x Platinum |
Portugal Sales: 40,000
Certification / note: 1x Platinum
Certification Date / sales as of:
|
|
 Singapore |
45,000 | 3x Platinum |
Singapore Sales: 45,000
Certification / note: 3x Platinum
Certification Date / sales as of:
|
|
 South Africa |
50,000 | 1x Platinum |
South Africa Sales: 50,000
Certification / note: 1x Platinum
Certification Date / sales as of:
|
|
 Spain |
400,000 | 4x Platinum | 1999 |
Spain Sales: 400,000
Certification / note: 4x Platinum
Certification Date / sales as of: 1999
|
 Sweden |
80,000 | 1x Platinum | 6 October, 1999 |
Sweden Sales: 80,000
Certification / note: 1x Platinum
Certification Date / sales as of: 6 October, 1999
|
 Switzerland |
50,000 | 1x Platinum | 2000 |
Switzerland Sales: 50,000
Certification / note: 1x Platinum
Certification Date / sales as of: 2000
|
 Taiwan |
200,000 | 4x Platinum |
Taiwan Sales: 200,000
Certification / note: 4x Platinum
Certification Date / sales as of:
|
|
 Thailand |
100,000 | 2x Platinum |
Thailand Sales: 100,000
Certification / note: 2x Platinum
Certification Date / sales as of:
|
|
 United Kingdom |
300,000 | 1x Platinum | 26 November, 1999 |
United Kingdom Sales: 300,000
Certification / note: 1x Platinum
Certification Date / sales as of: 26 November, 1999
|
 United States |
13,840,000 | 13x Platinum | 7 February, 2001 |
United States Sales: 13,840,000
Certification / note: 13x Platinum
Certification Date / sales as of: 7 February, 2001
|
 Uruguay |
6,000 | 1x Platinum |
Uruguay Sales: 6,000
Certification / note: 1x Platinum
Certification Date / sales as of:
|
|
 Venezuela |
40,000 | 2x Platinum |
Venezuela Sales: 40,000
Certification / note: 2x Platinum
Certification Date / sales as of:
|
|
 Europe (IFPI) |
2,000,000 | 2x Platinum | 1999 |
Europe (IFPI) Sales: 2,000,000
Certification / note: 2x Platinum
Certification Date / sales as of: 1999
|
| Worldwide sales | 40,000,000 | Sony Music Japan, Billboard |
Total
Sales: 40,000,000
Source: Sony Music Japan, Billboard
|
Year-end chart performance for MILLENNIUM
| Chart 1999 | Rank | Sales |
| Australian Albums (ARIA) |
11 | >140,000 |
| Austrian Albums (Ö3 Austria) |
9 | |
| Belgian Albums (Ultratop Flanders) |
12 | |
| Belgian Albums (Ultratop Wallonia) |
22 | |
| Canadian Albums (RPM) |
1 | |
| Danish Albums (Hitlisten) |
11 | |
| Dutch Albums (Album Top 100) |
10 | |
 European Albums (Music & Media) |
7 | |
| German Albums (Offizielle Top 100) |
5 | |
| Italian Albums (FIMI) |
10 | |
| Japanese Albums (Oricon) |
38 | 688,560 |
| New Zealand Albums (RMNZ) |
19 | |
| Portuguese Albums (AFP) |
5 | |
| Spanish Albums (PROMUSICAE) |
7 | |
| Swedish Albums (Sverigetopplistan) |
7 | |
| Swiss Albums (Schweizer Hitparade) |
12 | |
| UK Albums |
47 | 340,000 |
| US Albums (Billboard 200) |
1 | |
| US Albums (Soundscan) |
1 | 9,400,000 |
| Chart 2000 | Rank | Sales |
| Canadian Albums (SoundScan) |
42 | |
| German Albums (Offizielle Top 100) |
89 | |
 Russian International Albums (Inter Media) |
43 | |
| Swiss Albums (Schweizer Hitparade) |
100 | |
| UK Albums |
115 | 150,000 |
| US Albums (Billboard 200) |
9 | |
| US Albums (Soundscan) |
28 | 2,259,643 |
Decade-end chart performance for MILLENNIUM
| Chart 1990's | Rank | Sales |
| US Albums (Billboard 200) |
16 | |
| US Albums (Soundscan) |
8 | 9,445,732 |
| Chart 2000's | Rank | Sales |
| US Albums (Billboard 200) |
45 |