Members of theEuropean Parliament (MEPs) areelected by the population of themember states of the European Union (EU). The European Electoral Act 2002 allows member states the choice to allocateelectoral subdivisions or constituencies (French:circonscriptions électorales;German:Wahlkreise;Italian:circoscrizioni elettorali;Swedish:valkretsar) for the European Parliament elections in several different ways.[1]
Most EU countries operate a single national constituency which elects MEPs for the whole country.[1] Belgium and Ireland are each subdivided into constituencies, with electoral results calculated separately in each constituency.[1] Germany, Italy and Poland are each subdivided into electoral districts, with the number of representatives determined at the national level after each election in proportion to the votes cast in each district.[1]
In Germany, political parties are entitled to present lists of candidates either atLänder or national level.
Currently, all constituencies use various forms ofproportional representation (PR), except the single-seatGerman-speaking electoral college in Belgium, which usesfirst-past-the-post. The parliament as a whole is not PR, becauseseats are apportioned between member states bydegressive proportionality.

| Constituency | Member State | Area/Community | Seats | Seats country total | Population, 2012[2] (thousands) | Area[3] (km2) | |||
|---|---|---|---|---|---|---|---|---|---|
| At election | Current | Current | Total | Per cur. seat | Total | Per cur. seat | |||
| Austria | Austria | (Full country) | 18 | 19 | 19 | 8,430 | 444 | 83,879 | 4,415 |
| Dutch-speaking electoral college | Belgium | Flemish Community | 12 | 12 | 21 | 6,389 | 532 | 13,521 | 1,127 |
| French-speaking electoral college | French Community of Belgium | 8 | 8 | 4,663 | 583 | 16,152 | 2,019 | ||
| German-speaking electoral college | German-speaking Community of Belgium | 1 | 1 | 77 | 77 | 854 | 854 | ||
| Bulgaria | Bulgaria | (Full country) | 17 | 17 | 17 | 7,306 | 430 | 110,900 | 6,524 |
| Croatia | Croatia | (Full country) | 11 | 12 | 12 | 4,269 | 356 | 56,594 | 4,716 |
| Cyprus | Cyprus | (Full country) | 6 | 6 | 6 | 864 | 144 | 9,251 | 1,542 |
| Czech Republic | Czech Republic | (Full country) | 21 | 21 | 21 | 10,511 | 501 | 78,866 | 3,756 |
| Denmark | Denmark | (Full country) | 13 | 14 | 14 | 5,592 | 399 | 42,916 | 3,065 |
| Estonia | Estonia | (Full country) | 6 | 7 | 7 | 1,323 | 189 | 45,227 | 6,461 |
| Finland | Finland | (Full country) | 13 | 14 | 14 | 5,414 | 387 | 338,435 | 24,174 |
| France | France | (Full country) | 74 | 79 | 79 | 66,233 | 838 | 656,412 | 8,309 |
| Germany | Germany | Full country, parties can opt for separate lists in the 16 Bundesländer | 96 | 96 | 96 | 81,932 | 853 | 357,162 | 3,720 |
| Greece | Greece | (Full country) | 21 | 21 | 21 | 11,093 | 528 | 131,957 | 6,284 |
| Hungary | Hungary | (Full country) | 21 | 21 | 21 | 9,920 | 472 | 93,024 | 4,430 |
| Dublin | Ireland | Dublin and countiesDún Laoghaire–Rathdown,Fingal andSouth Dublin | 3 | 4 | 14 | 1,271 | 318 | 921 | 230 |
| Midlands–North-West | CountiesCavan,Donegal,Galway,Kildare,Laois,Leitrim,Longford,Louth,Mayo,Meath,Monaghan,Offaly,Roscommon,Sligo andWestmeath; and the city ofGalway | 4 | 5 | 1,635 | 409 | 37,282 | 9,321 | ||
| South | CountiesCarlow,Clare,Cork,Kilkenny,Kerry,Limerick,Tipperary,Waterford,Wexford andWicklow; and the cities ofCork,Limerick andWaterford | 4 | 5 | 1,675 | 335 | 31,935 | 6,387 | ||
| North-West | Italy | Aosta Valley,Liguria,Lombardy,Piedmont | 20 | 20 | 76 | 15,807 | 790 | 57,928 | 2,896 |
| North-East | Emilia-Romagna,Friuli-Venezia Giulia,Trentino-Alto Adige/Südtirol,Veneto | 14 | 15 | 11,482 | 765 | 62,327 | 4,155 | ||
| Central | Latium,Marche,Tuscany,Umbria | 14 | 15 | 11,637 | 776 | 58,084 | 3,872 | ||
| Southern | Abruzzo,Apulia,Basilicata,Calabria,Campania,Molise | 17 | 18 | 13,975 | 776 | 73,800 | 4,100 | ||
| Islands | Sardinia,Sicily | 8 | 8 | 6,639 | 830 | 49,932 | 6,242 | ||
| Latvia | Latvia | (Full country) | 8 | 8 | 8 | 2,034 | 254 | 64,573 | 8,072 |
| Lithuania | Lithuania | (Full country) | 11 | 11 | 11 | 2,988 | 272 | 65,300 | 5,936 |
| Luxembourg | Luxembourg | (Full country) | 6 | 6 | 6 | 531 | 88 | 2,586 | 431 |
| Malta | Malta | (Full country) | 6 | 6 | 6 | 420 | 70 | 316 | 53 |
| Netherlands | Netherlands | (Full country) | 26 | 29 | 29 | 16,755 | 578 | 41,540 | 1,432 |
| Pomeranian | Poland | Pomeranian Voivodeship | 3 | 3 | 52 | 2,287 | 762 | 18,310 | 6,103 |
| Kuyavian-Pomeranian | Kuyavian-Pomeranian Voivodeship | 2 | 2 | 2,097 | 1,049 | 17,972 | 8,986 | ||
| Podlaskie and Warmian-Masurian | Podlaskie andWarmian-Masurian Voivodeships | 3 | 3 | 2,651 | 884 | 44,360 | 14,787 | ||
| Warsaw | City ofWarsaw and part of theMasovian Voivodeship[note 1] | 6 | 6 | 2,795 | 466 | 11,205 | 1,868 | ||
| Masovian | The rest of theMasovian Voivodeship[note 2] | 3 | 3 | 2,499 | 833 | 24,353 | 8,118 | ||
| Łódź | Łódź Voivodeship | 3 | 3 | 2,529 | 843 | 18,219 | 6,073 | ||
| Greater Poland | Greater Poland Voivodeship | 5 | 5 | 3,350 | 670 | 15,183 | 3,037 | ||
| Lublin | Lublin Voivodeship | 3 | 3 | 2,169 | 732 | 25,122 | 8,374 | ||
| Subcarpathian | Subcarpathian Voivodeship | 3 | 3 | 2,129 | 710 | 17,846 | 5,949 | ||
| Lesser Poland and Świętokrzyskie | Lesser Poland andŚwiętokrzyskie Voivodeships | 5 | 6 | 4,735 | 789 | 41,537 | 6,923 | ||
| Silesian | Silesian Voivodeship | 7 | 7 | 4,621 | 660 | 12,333 | 1,762 | ||
| Lower Silesian and Opole | Lower Silesian andOpole Voivodeships | 4 | 4 | 3,928 | 982 | 29,359 | 7,340 | ||
| Lubusz and West Pomeranian | Lubusz andWest Pomeranian Voivodeships | 4 | 4 | 2,745 | 686 | 36,880 | 9,220 | ||
| Portugal | Portugal | (Full country) | 21 | 21 | 21 | 10,515 | 501 | 92,212 | 4,391 |
| Romania | Romania | (Full country) | 32 | 33 | 33 | 21,385 | 648 | 238,391 | 7,224 |
| Slovakia | Slovakia | (Full country) | 13 | 14 | 14 | 5,408 | 386 | 49,036 | 3,503 |
| Slovenia | Slovenia | (Full country) | 8 | 8 | 8 | 2,057 | 257 | 20,273 | 2,534 |
| Spain | Spain | (Full country) | 54 | 59 | 59 | 46,773 | 793 | 505,991 | 8,576 |
| Sweden | Sweden | (Full country) | 20 | 21 | 21 | 9,519 | 453 | 438,576 | 20,885 |
| Total | 751 | 705 | 705 | 445,056 | 631 | 4,238,831 | 6,013 | ||
Denmark had a separate constituency for Greenland until 1985, when the autonomous territorywithdrew from theEEC (later expanded to become the EU).

Between 2004 and 2019, France was divided into 8 constituencies:
Ireland's constituencies have changed several times:

Before the United Kingdom'swithdrawal from the EU, there was a 3-membersingle transferable vote constituency coveringNorthern Ireland. The constituencies coveringEngland,Scotland, andWales changed several times:
On May 3, 2022, the European Parliament passed (323 votes to 262) a "legislative resolution on the reform of European electoral law".[4] Among the proposals is the creation of a 28-member pan-Union constituency elected by party-list proportional representation on a list separate from elections for regional constituencies.[5] However in July 2023 the reference to it was removed by theEuropean Council.[6]