Editing Demographics of Bulgaria (section)

===Historical migration===
The first censuses of the [[Principality of Bulgaria]] and the autonomous province of [[Eastern Rumelia]] in 1880 recorded 31,786 and 17,970 Bulgarian refugees from [[Macedonia (region)|Macedonia]] and [[Adrianople Vilayet|Ottoman Thrace]], respectively, who accounted for 1.38% of the population of the Principality an 2.20% of the population of the autonomous province, respectively.<ref name="1881 Census">{{Citation|title=Общи резултати от преброяването на населението на 1 януарий 1881 г.|trans-title=General Results of the Census of the Population of 1 January 1881|url=https://www.nsi.bg/statlib/bg/lister.php?iid=DO-010000007&page=16|pages=16–17|publisher=National Statistical Institute|language=bg}}</ref><ref name="Balev">{{cite web | first1=Ivan| last1=Balev |url=https://www.nsi.bg/spisaniestatistika/page/download.php?articleID=78 | trans-title=Unrecognised Censuses in the History of Bulgarian Statistics|title=НЕПРИЗНАТИТЕ" ПРЕБРОЯВАНИЯ В ИСТОРИЯТА НА БЪЛГАРСКАТА СТАТИСТИКА | language=bg | date=2017 | pages=10–11}}</ref><ref name="Thrace">{{Cite book| title=Сборник Тракия, т. 1|trans-title=Collection Thrace |volume=I| url=http://macedonia.kroraina.com/tr/1/trakij_1_2001_4.htm |date=2001|pages=51|publisher=Thracian Scientific Institute, [[Haskovo]] Branch|language=bg}}</ref> The census of the Principality also counted a total of 37,635 people, or 1.88% of the population, born in a country other than the [[Ottoman Empire]], mostly Bulgarians from [[Bulgarians in Romania|Romania]], [[Northern Dobruja]] and [[Bessarabian Bulgarians|Bessarabia]].<ref name="1881 Census"/> By 1887, when the first joint census of the Principality and the autonomous province was conducted following their peaceful [[Bulgarian unification|unification]] in 1885, the number of the refugees from the Ottoman Empire had grown to 54,462 people, or 1.73% of the population, while the rest of the foreign-born population had fallen to 31,637 people, 9,831 of whom born in the [[Russian Empire]], 11,843 in [[Romania]], 2,690 in [[Serbia]] and 7,273 elsewhere.<ref name="1887 Census">{{Citation|title=Общи резултати от преброяването на населението на 1 януарий 1887 г.|trans-title=General Results of the Census of the Population of 1 January 1888|date=1890|url=https://www.nsi.bg/statlib/bg/lister.php?iid=DO-010000078&page=16|pages=16–17|publisher=National Statistical Institute|language=bg}}</ref>

According to the 1910 census, 300,000 or almost 10% of the ethnic Bulgarians were born in another Bulgarian municipality than the one they were enumerated in. The same data shows that the foreign-born ethnic Bulgarians numbered 78,000, or 2% of them, most numerous of whom were the 61,000 [[Ottoman Empire|Ottoman]]-born, 9,000 Romanian-born and by less than 2,000 [[Austro-Hungarian Empire|Austro-Hungarian]], Serbian and Russian-born.<ref>{{cite web|url=http://statlib.nsi.bg:8181/en/lister.php?iid=DO-010000566&page=62|archive-url=https://web.archive.org/web/20170206185503/http://statlib.nsi.bg:8181/en/lister.php?iid=DO-010000566&page=62|url-status=dead|archive-date=6 February 2017|title=iLib - Lister|date=6 February 2017|access-date=15 October 2017}}</ref> By the 1926 census, there had been 253,000 refugees with granted households and land or citizenship but with many more in towns of uncertain number. 35% came from [[Eastern Thrace]], 30% came from [[Macedonia (Greece)|Greek Macedonia]], another 18% from [[Western Thrace]], 8% from [[Dobruja]], 4% from the [[Western Outlands]], 3% from [[Asia Minor]], and 2% from [[North Macedonia]]. They constituted 6% of the country's population. In 1940, 70,000 Bulgarians [[Population exchange between Bulgaria and Romania|were exchanged]] from [[Northern Dobruja]]. The total number of refugees in 1878-1940 is estimated at between 700,000 and 1,200,000.<ref>{{cite web|url=http://docplayer.net/35763499-Communities-identities-and-migrations-in-southeast-europe.html|title=Communities, Identities and Migrations in Southeast Europe - PDF|website=docplayer.net|access-date=24 August 2017}}</ref> [[Exodus of Turks from Bulgaria (1950-1951)|In 1950-1951, around 150,000 Turks left Bulgaria]] for Turkey, and [[Big Excursion|again in 1989]].

<gallery widths=180>
Bulgarian internal migration 1910.png|Percentage of Bulgarians born in a different municipality of Bulgaria calculated from the total of the ethnic Bulgarians in 1910
Bulgarian refugees 1910.png|Percentage of foreign-born Bulgarians calculated from the total of the ethnic Bulgarians in 1910
Macedonian Bulgarian refugees.png|Percentage of Bulgarians born in Greek Macedonia and North Macedonia in 1946 calculated from the total of the ethnic Bulgarians
Thracian Bulgarian refugees.png|Part of the Bulgarians born in [[East Thrace]], [[West Thrace]] and [[Asia Minor]] in 1946 calculated from the total of the ethnic Bulgarians
Danubian Bulgarian refugees.png|Part of the Bulgarians born in [[Northern Dobruja]], [[Romania]] and [[Serbia]] in 1946 calculated from the total of the ethnic Bulgarians
Bulgarian refugees.png|Foreign born as a part of the ethnic Bulgarians in 1946
</gallery>