List Of NATO Countries With Details (2023 Updated)

Last Updated: 6 March 2023

Before we get into the List of NATO Counties, let’s have a quick intro about NATO and how it works.

North Atlantic Treaty Organization in short NATO is an international alliance that consists of 30 member states from Europe, North America, and Asia. It was established at the signing of the North Atlantic Treaty on 4 April 1949.

Article Five of the treaty states that if an armed attack occurs against one of the member states, it shall be considered an attack against all members, and other members shall assist the attacked member, with armed forces if necessary.

Facts About NATO

• Out of the 30 member countries, 27 are located in Europe, two in North America, and one in Asia.

• Between 1994 and 1997, broader forums for regional cooperation between NATO and its neighbors were set up, including the Partnership for Peace, the Mediterranean Dialogue initiative, and the Euro-Atlantic Partnership Council.

• All members have militaries, except for Iceland, which does not have a typical army but a coast guard and a small unit of civilian specialists for NATO operations.

• Three of NATO’s members are nuclear weapons states: France, the United Kingdom, and the United States.

• NATO has 12 original founding member states. Three more members joined between 1952 and 1955, and a fourth new member joined in 1982.

• After the end of the Cold War, NATO added 14 more members from 1999 to 2020.

• NATO currently recognizes Bosnia and Herzegovina, Georgia, and Ukraine as aspiring members as part of their Open Doors enlargement policy.

• No country that has joined NATO has ever opted to leave it.

List Of NATO Countries

No.	Flag	Country	Capital	Accession	Area (km2)
1		Albania	Tirana	1 Apr 2009	28,748
2		Belgium	Brussels	24 Aug 1949	30,689
3		Bulgaria	Sofia	29 Mar 2004	110,994
4		Canada	Ottawa	24 Aug 1949	9,984,670
5		Croatia	Zagreb	1 Apr 2009	56,594
6		Czech Republic	Prague	12 Mar 1999	78,871
7		Denmark	Copenhagen	24 Aug 1949	42,933
8		Estonia	Tallinn	29 Mar 2004	45,339
9		France	Paris	24 Aug 1949	643,801
10		Germany	Berlin	8 May 1955	357,022
11		Greece	Athens	18 Feb 1952	131,957
12		Hungary	Budapest	12 Mar 1999	93,030
13		Iceland	Reykjavík	24 Aug 1949	102,775
14		Italy	Rome	24 Aug 1949	301,230
15		Latvia	Riga	29 Mar 2004	64,589
16		Lithuania	Vilnius	29 Mar 2004	65,300
17		Luxembourg	Luxembourg	24 Aug 1949	2,586
18		Montenegro	Podgorica	5 Jun 2017	13,812
19		Netherlands	Amsterdam	24 Aug 1949	41,865
20		North Macedonia	Skopje	27 Mar 2020	25,713
21		Norway	Oslo	24 Aug 1949	385,207
22		Poland	Warsaw	12 Mar 1999	312,696
23		Portugal	Lisbon	24 Aug 1949	92,212
24		Romania	Bucharest	29 Mar 2004	238,397
25		Slovakia	Bratislava	29 Mar 2004	49,035
26		Slovenia	Ljubljana	29 Mar 2004	20,271
27		Spain	Madrid	30 May 1982	505,990
28		Turkey	Ankara	18 Feb 1952	783,356
29		United Kingdom	London	24 Aug 1949	242,495
30		United States	Washington, D.C.	24 Aug 1949	9,833,520

Founding And Changes In Membership

• Eighteen countries have joined NATO since its founding in 1949 by 12 countries (Belgium, Canada, Denmark, France, Iceland, Italy, Luxembourg, the Netherlands, Norway, Portugal, the United Kingdom, and the United States). No countries have left.

• The largest membership increase occurred in 2004 when 7 countries joined.

• Twentieth Century additions included Greece and Turkey in 1952, West Germany in 1955, and Spain in 1982. Three former Warsaw Pact countries, Hungary, the Czech Republic, and Poland joined in 1999 (invited 1997). The 1990 reunification of Germany brought in the territory of the former country of East Germany.

• Twenty-first Century additions began in May 2000 when 10 countries of the Baltics and Eastern Europe formed the Vilnius group to cooperate and lobby for NATO membership.

• Seven within the Vilnius group (Bulgaria, Estonia, Latvia, Lithuania, Romania, Slovakia, Slovenia) joined in 2004.

• The remaining three joined subsequently, Albania and Croatia in 2009 and North Macedonia in 2020. Montenegro joined in 2017.

Military Personnel Of NATO Countries

No.	Flag	Country	Active Military	Reserve Military	Para Military	Total Military
1		Albania	7,500	0	500	8,000
2		Belgium	24,450	5,900	0	30,350
3		Bulgaria	36,950	3,000	0	39,950
4		Canada	66,500	34,400	4,500	105,400
5		Croatia	16,700	21,000	3,000	40,700
6		Czech Republic	26,600	0	0	26,600
7		Denmark	15,400	44,200	0	59,600
8		Estonia	7,200	17,500	15,800	40,500
9		France	203,250	41,050	100,500	344,800
10		Germany	183,400	30,050	0	213,450
11		Greece	143,300	221,350	4,000	368,650
12		Hungary	34,200	20,000	12,000	66,200
13		Iceland	0	250	250	500
14		Italy	161,550	17,900	176,350	355,800
15		Latvia	8,750	11,200	0	19,950
16		Lithuania	23,000	7,100	14,150	44,250
17		Luxembourg	410	0	600	1,010
18		Montenegro	2,350	2,800	10,100	15,250
19		Netherlands	33,600	6,000	6,500	46,100
20		North Macedonia	8,000	4,850	7,600	20,450
21		Norway	25,400	40,000	0	65,400
22		Poland	114,050	0	75,400	189,450
23		Portugal	27,250	211,700	24,700	263,650
24		Romania	71,500	55,000	57,000	183,500
25		Slovakia	17,950	0	0	17,950
26		Slovenia	6,950	1,200	0	8,150
27		Spain	122,850	14,900	75,800	213,550
28		Turkey	355,200	378,700	156,800	890,700
29		United Kingdom	153,200	75,450	0	228,650
30		United States	1,395,350	843,450	0	2,238,800
		NATO	3,292,810	2,108,950	745,550	6,147,310

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