Population censuses in Greece take place the first year of every decade. There have been 28 censuses in the history of modern Greece,[1] conducted in various times, starting from 1828 at the end of the Greek War of Independence.
More information Year, Population ...
| Year | Population | Area (km2) | Notes |
| 1821 | 938,765 | 47,516 | Population in the Peloponnese, Central Greece, and a few islands; 1821 estimate based on the 1828 census |
| 1828 [el] | 753,400 | | First national census of Greece |
| 1834 [el] | 693,592 | | First official census (1834–1835) |
| 1838 | 752,077 | | |
| 1840 | 850,246 | | |
| 1841 | 861,019 | | |
| 1842 | 853,005 | | |
| 1843 | 915,059 | | |
| 1844 | 930,925 | | |
| 1845 | 960,236 | | |
| 1848 | 986,731 | | |
| 1853 | 1,035,527 | | |
| 1856 | 1,062,627 | | |
| 1861 | 1,096,810 | | |
| 1870 | 1,457,894 | 50,211 | First census after the donation of the Ionian Islands by Great Britain (1864) |
| 1879 | 1,679,470 | | |
| 1889 | 2,187,208 | 63,606 | First census after Thessaly became part of Greece in 1881 |
| 1896 | 2,433,806 | | |
| 1907 | 2,631,952 | 63,211 | |
| 1913 | 4,734,990 | 121,794 | After the Balkan Wars, incorporation of Macedonia, Epirus, Crete, the eastern Aegean Islands (apart from the Dodecanese)[2] |
| 1920 | 5,531,474 | 149,150 | Incorporation of Western Thrace and Eastern Thrace (apart from Constantinople) and Smyrna Zone |
| 1928 | 6,204,684 | 129,880 | Following loss of the Smyrna Zone and Eastern Thrace after the Treaty of Lausanne, and the population exchange between Greece and Turkey |
| 1940 | 7,344,860 | | |
| 1951 | 7,632,801 | 131,957 | The Dodecanese Islands were incorporated in 1947 |
| 1961 | 8,388,553 | | |
| 1971 | 8,768,641 | | |
| 1981 | 9,740,417 | | |
| 1991 | 10,258,364 | | |
| 2001 [el] | 10,964,020 | | |
| 2011 | 10,815,197 | | |
| 2021 | 10,482,487 | | |
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