NATO Countries

The North Atlantic Treaty Organization is a military alliance founded in 1949 to provide collective defence for its members. It began with 12 founding countries and has grown to 32, most recently adding Finland and Sweden. The alliance spans North America and Europe, bound by the principle that an attack on one member is treated as an attack on all.

32 countries All 32 current members of the North Atlantic Treaty Organization.

Country	Capital	Currency	Population
Albania	Tirana	ALL L	2,349,580
Belgium	Brussels	EUR €	11,941,781
Bulgaria	Sofia	EUR €	6,433,302
Canada	Ottawa	CAD $	41,651,653
Croatia	Zagreb	EUR €	3,876,200
Czechia	Prague	CZK Kč	10,886,878
Denmark	Copenhagen	DKK kr	6,009,169
Estonia	Tallinn	EUR €	1,366,475
Finland	Helsinki	EUR €	5,646,436
France	Paris	EUR €	68,720,337
Germany	Berlin	EUR €	83,491,249
Greece	Athens	EUR €	10,413,962
Hungary	Budapest	HUF Ft	9,514,251
Iceland	Reykjavik	ISK kr	392,404
Italy	Rome	EUR €	58,915,656
Latvia	Riga	EUR €	1,847,785
Lithuania	Vilnius	EUR €	2,888,774
Luxembourg	Luxembourg	EUR €	686,970
Montenegro	Podgorica	EUR €	623,129
Netherlands	Amsterdam	EUR €	18,087,633
North Macedonia	Skopje	MKD den	1,820,909
Norway	Oslo	NOK kr	5,610,870
Poland	Warsaw	PLN zł	36,435,861
Portugal	Lisbon	EUR €	10,804,871
Romania	Bucharest	RON lei	19,020,271
Slovakia	Bratislava	EUR €	5,413,813
Slovenia	Ljubljana	EUR €	2,130,986
Spain	Madrid	EUR €	49,355,143
Sweden	Stockholm	SEK kr	10,596,620
Türkiye	Ankara	TRY ₺	85,878,556
United Kingdom	London	GBP £	69,487,000
United States	Washington D.C.	USD $	341,784,857

Populations from the World Bank (SP.POP.TOTL); other fields from open datasets. Sources and vintage on the data page. Membership of cultural regions can vary between sources; this list uses the definition described above.