ThePoles come from differentWest Slavictribes living on territories belonging later to Poland in the earlyMiddle Ages.

Around the year 1000, the population of theDuchy of Poland is estimated at 1,000,000^[1] to 1,250,000.^[2] Around 1370 Poland had 2 million inhabitants with a population density of 8.6 per square kilometer.^[3] Poland was less affected by theBlack Death thanWestern Europe.^[3]

Although the population of theKingdom of Poland in late Middle Ages consisted mostly ofPoles, the influx of other cultures was significant: particularly notable wereJewish andGerman settlers, who often formed significant minorities or even majorities in urban centers. Sporadically migrants from other places likeScotland, andNetherlands settled in Poland as well. At that time other notable minorities included various incompletely assimilated people from otherSlavic tribes (some of whom would eventually merge totally into the Polish people, while others merged into neighboring nations).

Around 1490, the combined population of Poland and Lithuania, in apersonal union (thePolish–Lithuanian union) since theUnion of Krewo a century before, is estimated at 8 million.^[4] An estimate for 1493 gives the combined population of Poland and Lithuania at 7.5 million (including 3.9 million in the Kingdom of Poland^[5]), breaking them down by ethnicity at 3.25 millionPoles, 3.75 millionRuthenians and 0.5 millionLithuanians.^[6] The Ruthenians composed most of the population of the Grand Duchy of Lithuania: this is the reason that the lateGDL is often called a Slavic country, alongsidePoland,Russia, etc.

Another estimate for the combined population at the beginning of the 16th century gives 7.5 million, roughly split evenly, due to the much larger territory of the Grand Duchy (with about 10-15 people per square km in Poland and 3-5 people per square km in the Grand Duchy, and even less in the south-east Cossack borderlands).[3][7] By 1500, about 15% of Poland's population lived in urban centers (settlements with over 500 people).[8]

By 1600, about 25% of Poland's population lived in urban centers (settlements with over 500 people).^[8] Major towns in Poland included:Gdańsk (70,000),Kraków (28,000),Warsaw (20,000-30,000),Poznań (20,000),Lwów (Lviv) (20,000),Elbląg (Elbing) (15,000),Toruń (Thorn) (12,000),Sandomierz (4,000-5,000),Kazimierz Dolny (4,000-5,000) andGniezno (4,000-5,000).^[8]

The population of the Commonwealth of both nations was never overwhelmingly eitherRoman Catholic or Polish. This resulted from Poland's possession ofUkraine and federation with Lithuania; in both these countries ethnic Poles were a distinct minority. The Commonwealth comprised primarily four nations:Poles,Lithuanians, andUkrainians andBelarusians (the latter two usually referred to together asRuthenians). Shortly after theUnion of Lublin (1569), at the turn of the 16th to 17th century, the Commonwealth population was around 7 million, with a rough breakdown of 4.5m Poles, 0.75m Lithuanians, 0.7m Jews and 2m Ruthenians.^[9] In 1618, after theTruce of Deulino the Commonwealth population increased together with its territory, reaching 12 million that could be roughly divided into: Poles – 4.5m, Ukrainians – 3.5m, Belarusians – 1.5m, Lithuanians – 0.75m, Prussians – 0.75m, Jews – 0.5m,Livonians – 0.5m; at that time nobility formed 10% andburghers, 15%.^[10] Population losses of 1648–1667 are estimated at 4m.^[10] Coupled with further population and territorial losses, by 1717 the Commonwealth population had fallen to 9m: roughly 4.5m Poles, 1.5m Ukrainians, 1.2m Belarusians, 0.8m Lithuanians, 0.5m Jews, 0.5m others^[10] The urban population was hit hard, falling to below 10%.^[11]

From 1648 to 1660, the Commonwealth lost between 30% and 50% of its population.^[12] During theGreat Northern War, Poland's population contracted by 25% in 1709–1711.^[13]

To bePolish, in the non-Polish lands of the Commonwealth, was then much less an index ofethnicity than of religion andrank; it was a designation largely reserved for thelanded noble class (szlachta), which included Poles but also many members of non-Polish origin whoconverted to Catholicism in increasing numbers with each following generation. For the non-Polishnobility such conversion meant a final step ofPolonization that followed the adoption of thePolish language andculture.^[14] Poland, as the culturally most advanced part of the Commonwealth, with the royal court, the capital, the largest cities, the second-oldest university in Central Europe (afterPrague), and the more liberal and democraticsocial institutions proved an irresistible magnet for the non-Polish nobility in the Commonwealth.^[15]

As a result, in the eastern territories a Polish (or Polonized) aristocracy dominated a peasantry whose great majority was neither Polish nor Roman Catholic. Moreover, the decades of peace brought hugecolonization efforts toUkraine, heightening the tensions amongnobles,Jews,Cossacks (traditionally Orthodox), Polish and Ruthenian peasants. The latter, deprived of their native protectors among the Ruthenian nobility, turned for protection tocossacks that facilitated violence that in the end broke the Commonwealth. The tensions were aggravated by conflicts betweenEastern Orthodoxy and theUkrainian Greek Catholic Church following theUnion of Brest, overall discrimination of Orthodox religions by dominant Catholicism,^[16] and severalCossack uprisings. In the west and north, many cities had sizableGerman minorities, often belonging toReformed churches. The Commonwealth had also one of the largestJewish diasporas in the world.

Until theReformation, theszlachta were mostlyCatholic orEastern Orthodox. However, many families quickly adopted theReformed religion. After theCounter-Reformation, when theRoman Catholic Church regained power in Poland, theszlachta became almost exclusively Roman Catholic, despite the fact thatRoman Catholicism was not a majority religion (the Roman Catholic and Orthodox churches counted approximately 40% of the population each, while the remaining 20% wereJews and members of variousProtestant churches).^[17] TheCounter-Reformation in Poland, influenced by the Commonwealth tradition ofreligious tolerance, was based mostly onJesuitpropaganda, and was very peaceful when compared to excesses such as theThirty Years' War elsewhere inEurope.^[18][19]

In the late 18th century, the first statistical estimates of Commonwealth population appeared.Aleksander Busching estimated the number of Commonwealth population for 8.5 million;Józef Wybicki in 1777 for 5,391,364;Stanisław Staszic in 1785 for 6 million; andFryderyk Moszyński in 1789 for 7,354,620.^[20] Modern estimates tend to be higher; by 1770, on the eve of thepartitions, Commonwealth had a population of about 11m^[21]-14m,^[22][23] about 10% of that - Jewish.^[21] The nobility constituted about 10%, the burghers, about 7-8%.^[21]

By theFirst Partition in 1772, the Polish–Lithuanian Commonwealth lost about 211 000 km² (30% of its territory, amounting at that time to about 733 000 km²),^[24] with a population of over four to five million people (about a third of its population of 14 million before the partitions).^[23]

After theSecond Partition, Commonwealth lost about 307 000 km², being reduced to 223 000 km².^[24] Only about 4 million people remained in Poland at that time, which makes for a loss of another third of its original population, about a half of the remaining.^[25]

After theThird Partition, overall, Austria had gained about 18 percent of the former Commonwealth territory (130,000 km²) and about 32 percent of the population (3.85 million people).^[26] Prussia had gained about 20 percent of the former Commonwealth territory 149,000 km²) and about 23 percent of the population (2.6 million people).^[26] Russia had gained about 62 percent of the former Commonwealth territory (462,000 km²) and about 45 percent of the population (3.5 million people).^[26]

An estimate for 1815 gives 11.5 million Poles, out of which 5m were under Russian control (4 million inCongress Poland and 1 million in the territories incorporated into the Russian Empire), 3.5m in the Prussian partition territories and 3m in the Austrian partition territories.^[27]

Congress Poland had a population of about 4.25 million around 1830.^[28] In the Russian partition, thePale of Settlement resulted in resettlement of manyRussian Jews to the western fringes ofRussian Empire, which now includedpart of Poland. This further increased the sizable community ofPolish Jews. By 1914, about 31 million people inhabited the territories that would become theSecond Polish Republic, theFirst World War saw the population of those territories drop to 26 million.^[22]

In the final decades of the 19th century, the Polish-speaking population expanded dramatically – by an estimated 70 to 100 percent – not only due to a very high rate of natural increase, but also due to the voluntaryPolonization of non-Poles, a process that occurred particularly in urban areas of Congress Poland andGalicia.^[29]

Before World War II, the Polish lands were noted for the variety of their ethnic communities. Following thePolish-Soviet War, a large part of its population belonged to national minorities. The census of that year allocates 30.8% of the population in the minority.^[30] In 1931, the population of Poland was 31,916,000, including 15,428,000 males and 16,488,000 females. By January 1939, the population of Poland increased to 35,100,000. This total included 240,000 inTrans-Olza which was under Polish control from October 1938 until August 1939.^[31] The population density was 90 persons per square km. In 1921, 24% of the population lived in towns and cities, by 1931 the ratio grew to 27%. Altogether, in 1921, there were 611 towns and cities in the country, by 1931 there were 636 municipalities. The six biggest cities of Poland (as of 1 January 1939) wereWarsaw,Łódź,Lwów,Poznań,Kraków andVilnius (Wilno). In 1931, Poland had the second largestJewish population in the world, and one-fifth of all Jews resided within Poland's borders (approx. 3,136,000, roughly 10% of the entire Polish population).^[30]

According to historianNorman Davies thePolish census of 1931 listed the nationalities by language as Polish, 69% of the population, Ukrainian, 15%, Jews 8.5%, Belarusian, 4.70%, German, 2.2%, Russian 0.25%, Lithuanian, 0.25%, Czech 0.09%,^[32]Norman Davies included theRuthenians with the Ukrainians however the Polish census figures list them as separate group with 3.82% of the population. The classification of the ethnic groups in Poland during theSecond Polish Republic is a disputed topic,Tadeusz Piotrowski maintains that the 1931 Polish census "involved questionable methodology, especially the use of mother tongue as an indicator of nationality", noting that it had underestimated the number of non-Poles. The official figures for nationality from the 1931 Polish census based on the mother tongue put the percentage of ethnic Poles at 68.9%, Jews 8.6% and other minority groups 22.5%. Piotrowski cited a study by the Polish historian Jerzy Tomaszewski that puts that the adjusted census figures (taking religious affiliation into account) of ethnic Poles at 64.7%, Jews 9.8% and other minority groups 25.5% of Poland's population.^[33] Polish demographer Piotr Eberhardt maintains that it is commonly agreed that the criterion of declared language to classify ethnic groups led to an overestimation of the number of Poles in pre-war Poland. He notes that in general, the numbers declaring a particular language do not mesh with the numbers declaring the corresponding nationality. Members of ethnic minority groups believe that the language criterion led to an overestimation of Poles.^[34]

The detailed figures for the census published by the Polish government provided a breakdown by religion for the various language groups, the details of thePolish census of 1931 published by the Central Statistical Office the Polish Republic according to language and religion are as follows.:^[35]

Breakdown of Total 1931 Polish Population by Language and Religion

Figures may not add due to omitted answers and those not practicing or declaring a religion. Source: Polish Main Statistical Office (1931)

Breakdown of Total 1931 Polish Population by Language and ReligionFigures as % of Total Population

Figures may not add due to omitted answers and those not practicing or declaring a religion. Source: Polish Main Statistical Office (1931)

In the southeast, Ukrainian settlements were present in the regions east ofChełm and in theCarpathians east ofNowy Sącz. The three main native highlander populations wereŁemkowie,Bojkowie andHuculi. In all the towns and cities there were large concentrations ofYiddish-speaking Jews. The Polish ethnographic area stretched eastward: in easternLithuania,Belarus, and westernUkraine, all of which had a mixed population, Poles predominated not only in the cities but also in numerous rural districts. There were significant Polish minorities inDaugavpils (inLatvia),Minsk (in Belarus),Bucovina (inRomania), andKyiv (in Ukraine) (seePolish minority in the Soviet Union,Polish Autonomous District).

See supplements:Occupation of Poland,World War II crimes in Poland,Holocaust in Poland

In the beginning of the war (September 1939) the territory of Poland was divided between theNazi Germany and theUSSR. By late-1941 followingOperation Barbarossa Nazi Germany controlled the entire territory of the formerSecond Polish Republic, but in 1944-1945 theRed Army's offensive claimed the region for the USSR.

After both occupiers divided the territory of Poland between themselves, they conducted a series of actions aimed atsuppression of Polish culture andrepression of much of the Polish people. In August 2009 the PolishInstitute of National Remembrance (IPN) researchers estimated Poland's dead (including Polish Jews) at between 5.47 and 5.67 million (due to German actions) and 150,000 (due to Soviet), or around 5.62 and 5.82 million total.^[36] About 90% ofPolish Jews were killed during theHolocaust; many others emigrated in the succeeding years.

1. Population 1939 -Polish sources allocate the population by theprimary language spoken, not by religion. Most Jews spokeYiddish, however included with the Poles are about 200,000 Polish speaking Jews who are classified with the Polish group. Included with the Poles are 1,300,000Eastern Orthodox &Greek Catholic adherents who are sometimes classified with the Ukrainian and Belarusian groups.^[39]

2. Natural Increase October 1939-December 1945 -After the war Polish demographers calculated the estimated natural population growth that occurred during the war.^[40]

3. Transfer of German Population Most of the ethnic German population fled during the war. Many of them were sent to forced labour.^{[41][circular reference]}. In 1950 only about 40,000 of the pre-war ethnic German group remained in Poland in 1950, most of whom emigrated later in the 1950s.^[42] Others were also expelled^{[43][circular reference]}.

4. War Dead In August 2009 the PolishInstitute of National Remembrance (IPN) put the figure of Poland's dead at between 5,620,000 and 5,820,000. The IPN's figures include 3 million Polish Jews who were murdered in the Holocaust (200,000 included with Polish speakers); as well asPoles killed in 1943-44 during themassacres of Poles in Volhynia.^[44][45][46] The figures also include 150,000 victims of Soviet repression.

Deaths Due to German Occupation
Poles-TheInstitute of National Remembrance (IPN) figure for deaths of Poles due to the German occupation is 2,770,000. This figure includes "Direct War Losses" -543,000; "Murdered in Camps and in Pacification" -506,000; "Deaths in prisons and Camps" 1,146,000; "Deaths outside of prisons and Camps" 473,000; "Murdered in Eastern Regions" 100,000; "Deaths in other countries" 2,000. These figures include about 200,000 Polish speaking Jews who are considered Poles in Polish sources.^[47]

Jews-Polish researchers have determined that the Nazis murdered 1,860,000 Polish Jews in the extermination camps in Poland, plus another 1.0 million Polish Jewish deaths in prisons and ghettos. In addition 970,000 Jews from other nations were murdered in the Nazi extermination camps in Poland.^[48]

In the Polish figures of war dead are included 2.0 million Polish citizens of thePolish areas annexed by the Soviet Union, that were occupied by German Nazy forces after22 June 1941.^[49] Contemporary Russian sources include these losses with Soviet war deaths.^[50]

Deaths Due to Soviet Occupation

The PolishInstitute of National Remembrance (IPN) researchers estimated that 150,000 Polish citizens were executed due to Soviet repressions or died during deportations. Since the collapse of the USSR, Polish scholars have been able to do research in the Soviet archives on Polish losses during the Soviet occupation.^[51]Andrzej Paczkowski puts the number of Polish deaths at 90–100,000 of the 1.0 million persons deported and 30,000 executed by the Soviets.^[52]

5.Population Remaining in the USSR The number of Poles and Jews who remained in the USSR after the war was estimated at 1.4 million by Polish scholar and historian Krystyna Kersten. Included with the Poles remaining in the USSR are about 700,000Eastern Orthodox &Greek Catholic adherents who are sometimes classified with the Ukrainian and Belarusian groups.^[49]

6. Emigration to the West Poles and Jews who remained in non communist countries after the war.

7. Population gainRecovered Territories Germans remaining in Poland after the war in theRecovered Territories. This group included 1,130,000 bi-lingual Polish-German persons who declared their allegiance to Poland. Also remaining in 1950 were 94,000 German nationals, 36,000 Germans from pre-war Danzig and 1,500 ethnic Germans of other nations. Most of this group emigrated to Germany after 1956. The ethnic German population remaining in the 1990s was about 300,000.^[53]

8. Reimmigration 1946-50 Poles resident in western Europe before the war, primarily in Germany and France, who returned to Poland after the war.^[54]

9. Natural Increase 1946-1950 This is the official Polish government data for births andnatural deaths from January 1946 until the census of December 1950.^[54]

10. Population December 1950 Per Census The total population per the December 1950 census was 25 million. A breakdown by ethnic group was not given. However, we can estimate the Jewish population based on the postwar census taken by the Jewish community. Data for the Germans and others who remained in Poland after the war can be estimated using the 1946 Polish census^[54]

BeforeWorld War II, a third of Poland's population was composed ofethnic minorities. After the war, however, Poland's minorities were mostly gone, due to the 1945revision of borders, and theHolocaust. Under theNational Repatriation Office (Państwowy Urząd Repatriacyjny), millions of Poles wereforced to leave their homes in the easternKresy region and settle in the westernformer German territories. At the same time approximately 5 million remaining Germans (about 8 million had already fled or had been expelled and about 1 million had been killed in 1944–46) were similarlyexpelled from those territories into the Allied occupation zones.Ukrainian andBelarusian minorities found themselves now mostly within the borders of the Soviet Union; those who opposed this new policy (like theUkrainian Insurgent Army in theBieszczady Mountains region) were suppressed by the end of 1947 in theOperation Vistula.

The population ofJews in Poland, which formed the largest Jewish community in pre-war Europe at about 3.3 million people, was all but destroyed by 1945. Approximately 3 million Jews died of starvation inghettos andlabor camps, were slaughtered at the GermanNazi extermination camps or by theEinsatzgruppen death squads. Between 40,000 and 100,000 Polish Jews survived the Holocaust in Poland, and another 50,000 to 170,000 were repatriated from the Soviet Union, and 20,000 to 40,000 from Germany and other countries. At its postwar peak, there were 180,000 to 240,000 Jews in Poland, settled mostly in Warsaw,Łódź,Kraków andWrocław.^[55]

Poland's population diminished from 35 million in 1939 to just under 24 million in 1946.^[56] According to the national census, which took place on 14 February 1946, the number of inhabitants was 23,930,000, out of which 32% lived in cities and towns, and 68% lived in the countryside. The 1950 census (3 December 1950) showed the population rise to 25,008,179, and the 1960 census (6 December 1960) placed the population of Poland at 29,776,000.^[57] In 1950, Warsaw was the biggest city of the country, with population of 804,000. Second was Lodz (pop. 620,000), third Kraków (pop. 344,000), fourth Poznan (pop. 321,000), and fifth Wroclaw (pop. 309,000).

Females were in the majority in the country. In 1931, there were 105.6 women for 100 men. In 1946, the difference grew to 118.5/100, but in subsequent years, number of males grew, and in 1960, the ratio was 106.7/100.

MostGermans were expelled from Poland and the annexed east German territories at the end of the war, while manyUkrainians, Rusyns andBelarusians lived in territories incorporated into theUSSR. Small Ukrainian, Belarusian,Slovak, andLithuanian minorities reside along the borders, and a German minority is concentrated near the southwestern city ofOpole and in Masuria. Groups of Ukrainians and Polish Ruthenians also live in western Poland, where they were forcefully resettled by communists.

As a result of the migrations and the Soviet Unions radically altered borders under the rule ofJoseph Stalin, the population of Poland became one of the most ethnically homogeneous in the world. Virtually all people in Poland claim Polish nationality, withPolish as their native tongue. Ukrainians resp. Rusyns, the largest minority group, are scattered in various northern districts. Lesser numbers of Belarusians and Lithuanians live in areas adjoining Belarus and Lithuania. The Jewish community, almost entirely Polonized, has been greatly reduced. InSilesia a significant segment of the population, of mixed Polish and German ancestry, tends to declare itself as Polish or German according to political circumstances. Minorities of Germans remain in Pomerania, Silesia, East Prussia, andLubus.

Small populations of PolishTatars still exist. Some Polish towns, mainly in northeastern Poland havemosques. Tatars arrived asmercenary soldiers beginning in the late 14th century. The Tatar population reached approximately 100,000 in 1630 but is less than 500 in 2000. See alsoIslam in Poland.^[58]

A recent large migration of Poles took place following Poland's accession to theEuropean Union and opening of the EU's labor market; with an approximate number of 2 million primarily young Poles taking up jobs abroad.^[59]

Demographics estimates for period beforestatistics and reliable data collection fromcensuses should be seen as giving only a roughorder of magnitude, not any precise number.^[3]

Sources:GUS,The World Factbook

Changes in the population of major Polish cities.

Note that this table contains information on some cities that are not within the borders of modern Poland, and others that have not been within those borders for many centuries. SeeTerritorial changes of Poland for more details on that issue.

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