Provinces & states
First-level administrative divisions, their capitals, population and area.
| Province / state | Country | Capital | Population | Area |
|---|---|---|---|---|
| Belize | Belize | Belmopan | 219,296 | 22,960 |
| Bengo | Angola | Caxito | 166,000 | 31,371 |
| Benguela | Angola | Benguela | 644,000 | 31,788 |
| Beni Suef | Egypt | Beni Suef | 1,586,000 | 1,322 |
| Benin | Benin | Porto-Novo | 5,709,529 | 112,620 |
| Berkshire | United Kingdom | Reading | 752,500 | 1,259 |
| Berlin | Germany | Berlin | 3,472,009 | 889 |
| Bhutan | Bhutan | Thimphu | 1,822,625 | 47,000 |
| Bialostockie | Poland | Bialystok | 697,000 | 10,055 |
| Bialskopodlaskie | Poland | Biala Podlaska | 306,700 | 5,348 |
| Bie | Angola | Bie | 1,125,000 | 70,314 |
| Bielskie | Poland | Bielsko Biala | 911,500 | 3,704 |
| Bihar | India | Patna | 86,374,465 | 173,877 |
| Bihor | Romania | Oradea | 660,000 | 7,535 |
| Bilecik | Turkey | Bilecik | 175,526 | 4,307 |
| Bingol | Turkey | Bingol | 250,966 | 8,125 |
| Bistrita Nasaud | Romania | Bistrita | 328,000 | 5,305 |
| Bitlis | Turkey | Bitlis | 330,115 | 6,707 |
| BL | Switzerland | Liestal | 252,331 | 517 |
| Blaenau Gwent | United Kingdom | Ebbw Vale | 73,300 | 109 |
| Blekinge | Sweden | Karlskrona | 151,168 | 2,941 |
| Bocas del Toro | Panama | Bocas del Toro | 88,400 | 8,745 |
| Bolivar | Colombia | Cartagena | 1,288,985 | 25,978 |
| Bolivar | Venezuela | Ciudad Bolivar | 1,142,210 | 238,000 |
| Bolivia | Bolivia | La Paz | 7,165,257 | 1,098,580 |
| Bolu | Turkey | Bolu | 536,869 | 11,051 |
| Borders | United Kingdom | Newtown St. Boswells | 105,700 | 4,698 |
| Borsod Abauj Zemplen | Hungary | Miskolc | 749,100 | 7,248 |
| Bosnia and Herzegovina | Bosnia and Herzegovina | Sarajevo | 2,656,240 | 51,233 |
| Botosani | Romania | Botosani | 468,000 | 4,965 |
| Botswana | Botswana | Gaborone | 1,477,630 | 600,370 |
| Bourgogne | France | Dijon | 1,609,000 | 31,582 |
| Boyaca | Colombia | Tunja | 1,209,739 | 23,189 |
| Boyer Ahmad e Kohkiluyeh | Iran | Yasuj | 496,739 | 14,261 |
| Brabant | Belgium | Brussels | 2,253,794 | 3,358 |
| Braga | Portugal | — | 746,100 | 2,673 |
| Braganca | Portugal | — | 158,300 | 6,608 |
| Braila | Romania | Braila | 404,000 | 4,724 |
| Brandenburg | Germany | Potsdam | 2,536,747 | 29,480 |
| Brasov | Romania | Brasov | 695,000 | 5,351 |
| Bremen | Germany | Bremen | 680,000 | 404 |
| Bretagne | France | Rennes | 2,796,000 | 27,209 |
| Bridgend | United Kingdom | Bridgend | 130,900 | 246 |
| British Columbia | Canada | Victoria | 3,724,500 | 948,596 |
| Brunei | Brunei | Bandar Seri Begawan | 299,939 | 5,770 |
| Bryanskaya oblast | Russia | Bryansk | 1,479,700 | 34,900 |
| BS | Switzerland | Basel | 195,759 | 37 |
| Buckinghamshire | United Kingdom | Aylesbury | 640,200 | 1,883 |