Member state of the European Union

Arms	Flag	State	Joined	Population	km²	GDP per cap. (PPP)[4]	Currency	Gini	HDI	Council votes	EP seats	Languages	Territories
		Belgium	Founder	11,041,300[5]	30,528	37,883[6]	euro	33.0[7]	0,897[8]	12	22	Dutch French German	–
		France	Founder	65,397,900[5]	674,843	35,548[6]	euro	32.7[7]	0,893[8]	29	74	French	5 + 7 excluded[show]
		Italy	Founder	60,820,800[5]	301,338	30,136[6]	euro	36.0[7]	0,881[8]	29	73	Italian	–
		Luxembourg	Founder	524,900[5]	2,586.4	79,785[6]	euro	30.8[7]	0,875[8]	4	6	French German Luxembourgish[g]	–
		Netherlands	Founder	16,730,300[5]	41,543	42,194[6]	euro	30.9[7]	0,921[8]	13	26	Dutch	6 excluded[show]
		Germany	Founder[f]	81,843,700[5]	357,021	39,028[6]	euro	28.3[7]	0,920[8]	29	99	German	–
		Denmark	1973-01-01	5,580,500[5]	43,075	37,657[6]	krone	24.7[7]	0,901[8]	7	13	Danish	2 excluded[show]
		Ireland	1973-01-01	4,582,800[5]	70,273	41,921[6]	euro	34.3[7]	0,916[8]	7	12	Irish English	–
		United Kingdom	1973-01-01	62,989,600[5]	243,610	36,941[6]	pound sterling	36.0[7]	0,875[8]	29	73	English	1 + 13 excluded[show]
		Greece	1981-01-01	11,290,900[5]	131,990	24,505[6]	euro	34.3[7]	0,860[8]	12	22	Greek	–
		Portugal	1986-01-01	10,541,800[5]	92,390	23,385[6]	euro	38.5[7]	0,816[8]	12	22	Portuguese	2[show]
		Spain	1986-01-01	46,196,300[5]	504,030	30,557[6]	euro	32.0[7]	0,885[8]	27	54	Spanish[h]	4[show]
		Austria	1995-01-01	8,443,000[5]	83,855	42,409[6]	euro	29.1[7]	0,895[8]	10	19	German	–
		Finland	1995-01-01	5,401,300[5]	338,424	36,395[6]	euro	26.9[7]	0,892[8]	7	13	Finnish Swedish	1[show]
		Sweden	1995-01-01	9,482,900[5]	449,964	41,191[6]	krona	25.0[7]	0,916[8]	10	20	Swedish	–
		Cyprus	2004-05-01	862,000[5]	9,251	27,086[6]	euro	31.2[7]	0,848[8]	4	6	Greek Turkish[a]	3 excluded[show]
		Czech Republic	2004-05-01	10,505,400[5]	78,866	27,191[6]	koruna	25.8[7]	0,873[8]	12	22	Czech	–
		Estonia	2004-05-01	1,339,700[5]	45,227	21,713[6]	euro	36.0[7]	0,846[8]	4	6	Estonian	–
		Hungary	2004-05-01	9,957,700[5]	93,030	19,638[6]	forint	30.0[7]	0,831[8]	12	22	Hungarian	–
		Latvia	2004-05-01	2,041,800[5]	64,589	18,255[6]	lats	35.7[7]	0,814[8]	4	9	Latvian	–
		Lithuania	2004-05-01	3,007,800[5]	65,200	21,615[6]	litas	35.8[7]	0,818[8]	7	12	Lithuanian	–
		Malta	2004-05-01	416,100[5]	316	27,022[6]	euro	25.8[7]	0,847[8]	3	6	Maltese English	–
		Poland	2004-05-01	38,538,400[5]	312,685	20,592[6]	złoty	34.9[7]	0,821[8]	27	51	Polish	–
		Slovakia	2004-05-01	5,404,300[5]	49,035	24,249[6]	euro	25.8[7]	0,840[8]	7	13	Slovak	–
		Slovenia	2004-05-01	2,055,500[5]	20,273	28,195[6]	euro	31.2[7]	0,892[8]	4	8	Slovene	–
		Bulgaria	2007-01-01	7,327,200[5]	110,994	14,312[6]	lev	29.2[7]	0,782[8]	10	18	Bulgarian	–
		Romania	2007-01-01	20,121,641[5]	238,391	12,808[6]	leu	31.5[7]	0,786[8]	14	33	Romanian	–
		Croatia	2013-07-01	4,398,000[5]	56,594	17,810[6]	kuna	29[7]	0,805[8]	7	12	Croatian	–
Total / Average			–	508,077,900[5]	4,381,376	33,800[9]	euro	30.7[10]	0.845[11]	352	766	24 (official)	–