The B40 Balkan Cities Network (B40 ) is an intercity organization between Balkans cities. The network was established with the Istanbul Declaration signed by 23 mayors at the end of the Istanbul Summit held on 29–30 November 2021 with a “Better Future, Better Cooperation” motto.[ 1] [ 2]
B40 Balkan Cities Network Formation 2021 Type Network of cities Region served
Balkans Membership
54 member cities Website b40network
As of 2024, the network has 54 member cities.[ 3]
Member cities
City
State
Population
Acharnes
Greece
108,130
Alexandroupolis
Greece
71,751
Athens
Greece
643,452
Belgrade
Serbia
1,197,714
Belitsa
Bulgaria
9,646
Bijeljina
Bosnia and Herzegovina 107,715
Burgas
Bulgaria
202,694
Chania
Greece
88,525
Constanța
Romania
263,688
Çanakkale
Turkey 143,622
Dimitrovgrad
Bulgaria
31,837
Durrës
Albania 175,110
Edirne
Turkey 180,002
Fierbinți-Târg
Romania
4,620
Galați
Romania
217,851
Istanbul
Turkey 15,907,951
İzmir
Turkey 4,367,251
Karditsa
Greece
56,747
Karlovo
Bulgaria
19,373
Karnobat
Bulgaria
16,483
Kilkis
Greece
51,926
Kırklareli
Turkey 85,493
Kisela Voda
North Macedonia 84,625
Kotor
Montenegro 23,670
Laktaši
Bosnia and Herzegovina 34,966
Lefkada
Greece
22,652
Mytilene
Greece
58,285
Nikšić
Montenegro 72,443
Niš
Serbia
260,237
Orestiada
Greece
37,695
Patras
Greece
215,922
Pella
Greece
2,398
Plovdiv
Bulgaria
346,893
Podgorica
Montenegro 173,024
Prilep
North Macedonia 63,308
Pristina
Kosovo 198,897
Prizren
Kosovo 220,128
Pula
Croatia 52,220
Rakovski
Bulgaria
14,679
Saraj
North Macedonia 38,399
Sarajevo
Bosnia and Herzegovina 275,524
Skopje
North Macedonia 526,502
Sliven
Bulgaria
83,740
Sofia
Bulgaria
1,248,452
Split
Croatia 160,577
Stara Zagora
Bulgaria
158,563
Svilengrad
Bulgaria
16,959
Tekirdağ
Turkey 186,421
Thessaloniki
Greece
319,045
Tirana
Albania 557,422
Troyan
Bulgaria
18,449
Veliko Tarnovo
Bulgaria
71,502
Zagreb
Croatia 767,131
Zenica
Bosnia and Herzegovina 110,663
