World Esperanto Congress

The World Esperanto Congress (, UK) is an annual Esperanto convention. It has the longest tradition among international Esperanto conventions, with an almost unbroken run for 119 years. The congresses have been held since August 5, 1905, every year, except during World War I, World War II, and the COVID-19 pandemic. Since the 1920s, the Universal Esperanto Association has been organizing these congresses.

These congresses take place every year and, over the 30 years from 1985 through 2014, have gathered an average of about 2,000 participants (since World War II it has varied from 800 to 6,000, depending on the venue). The average number of countries represented is about 60. Some specialized organizations also gather a few hundred participants in their annual meetings. The World Congress usually takes place in the last week of July or first week of August, beginning and ending on a Saturday (8 days in total). For many years ILERA has operated an amateur radio station during the conventions.

Until 1980, meetings were held in Europe and the United States, with the exception of Japan in 1965. Since then, other countries have been Brazil, Canada, China, Cuba, South Korea, Australia, Israel, Vietnam and Argentina. In 2024, the congress was held in Africa for the first time, in Arusha, Tanzania.

History

Number Year City Country Number ofparticipants 112 2027 Melbourne 111 2026 Graz 110 2025 Brno 1132Definitiva statistiko de UK-110: 1132 aliĝintoj el 63 landoj, La Ondo de Esperanto, la sesa aŭgusto 2025, alirita la 21-a de septembro 2025. 109 2024 Arusha 854 108 2023 Turin 1318 107 2022 Montreal 859 106 2021 Belfast online 1853 105 2020 Montreal online 2006 104 2019 Lahti 917 103 2018 Lisbon 1567 102 2017 Seoul 1173 101 2016 Nitra 1252 100 2015 Lille 2698Universala Esperanto-Asocio: "Fina statistiko de Lillo: 2698 aliĝintoj el 80 landoj". 99 2014 Buenos Aires 706Universala Esperanto-Asocio: "Rezolucio de la 99-a Universala Kongreso de Esperanto". 98 2013 Reykjavík 1034Universala Esperanto-Asocio: "La 98-a Universala Kongreso de Esperanto ". 97 2012 Hanoi 866 96 2011 Copenhagen 1458Vikinga Voĉo, n-ro 6 (La kongresa Kuriero de la 96-a Universala Kongreso de Esperanto. 95 2010 Havana 1002 94 2009 Białystok 1860 93 2008 Rotterdam 1845 92 2007 Yokohama 1901 91 2006 Florence 2209 90 2005 Vilnius 2235 89 2004 Beijing 2031 88 2003 Gothenburg 1791 87 2002 Fortaleza 1484 86 2001 Zagreb 1691 85 2000 Tel Aviv 1212 84 1999 Berlin 2712 83 1998 Montpellier 3133 82 1997 Adelaide 1224 81 1996 Prague 2972 80 1995 Tampere 2443 79 1994 Seoul 1776 78 1993 Valencia 1863 77 1992 Vienna 3033 76 1991 Bergen 2400 75 1990 Havana 1617 74 1989 Brighton 2280 73 1988 Rotterdam 2321 72 1987 Warsaw 5946 71 1986 Beijing 2482 70 1985 Augsburg 2311 69 1984 Vancouver 802 68 1983 Budapest 4834 67 1982 Antwerp 1899 66 1981 Brasília 1749 65 1980 Stockholm 1807 64 1979 Lucerne 1630 63 1978 Varna 4414 62 1977 Reykjavík 1199 61 1976 Athens 1266 60 1975 Copenhagen 1227 59 1974 Hamburg 1651 58 1973 Belgrade 1638 57 1972 Portland 923 56 1971 London 2071 55 1970 Vienna 1987 54 1969 Helsinki 1857 53 1968 Madrid 1769 52 1967 Rotterdam 1265 51 1966 Budapest 3975 50 1965 Tokyo 1710 49 1964 The Hague 2512 48 1963 Sofia 3472 47 1962 Copenhagen 1550 46 1961 Harrogate 1646 45 1960 Brussels 1930 44 1959 Warsaw 3256 43 1958 Mainz 2021 42 1957 Marseille 1468 41 1956 Copenhagen 2200 40 1955 Bologna 1687 39 1954 Haarlem 2353 38 1953 Zagreb 1760 37 1952 Oslo 1614 36 1951 Munich 2040 35 1950 Paris 2325 34 1949 Bournemouth 1534 33 1948 Malmö 1761 32 1947 Bern 1370 31 1939 Bern 765 30 1938 London 1602 29 1937 Warsaw 1120 28 1936 Vienna 854 27 1935 Rome 1442 26 1934 Stockholm 2042 25 1933 Cologne 950 24 1932 Paris 1650 23 1931 Kraków 900 22 1930 Oxford 1211 21 1929 Budapest 1200 20 1928 Antwerp 1494 19 1927 Danzig 905 18 1926 Edinburgh 960 17 1925 Geneva 953 16 1924 Vienna 3400 15 1923 Nuremberg 4963 14 1922 Helsinki 850 13 1921 Prague 2561 12 1920 The Hague 408 11 1915 San Francisco 163 10 1914 Paris cancelled dueto World War I 9 1913 Bern 1203 8 1912 Kraków 1000 7 1911 Antwerp 1800 6 1910 Washington, D.C. 357 5 1909 Barcelona 1287 4 1908 Dresden 1500 3 1907 Cambridge 1317 2 1906 Geneva 1200 1 1905 Boulogne-sur-Mer 688

Statistics Countries Countries by number of times as host:

Times hosted Country Years hosted 8 1908, 1923, 1933, 1951, 1958, 1974, 1985, 1999 1907, 1926, 1930, 1938, 1949, 1961, 1971, 1989 6 1905, 1932, 1950, 1957, 1998, 2015 1906, 1913, 1925, 1939, 1947, 1979 1920, 1954, 1964, 1967, 1988, 2008 5 1931, 1937, 1959, 1987, 2009 4 1911, 1928, 1960, 1982 1922, 1969, 1995, 2019 1924, 1936, 1970, 1992 1934, 1948, 1980, 2003 1956, 1962, 1975, 2011 1935, 1955, 2006, 2023 3 1909, 1968, 1993 1910, 1915, 1972 1929, 1966, 1983 1921, 1996, 2025 2 1952, 1991 1953, 1973 1963, 1978 1965, 2007 1977, 2013 1986, 2004 1984, 2022 1981, 2002 1990, 2010 1994, 2017 1 1912 1927 1976 1997 2000 2001 2005 2012 2014 2016 20182024

Continents Of the 102 congresses that have happened so far, 84 were hosted in Europe, 8 in Asia, 6 in North America, 3 in South America, 1 in Australia/Oceania and 1 in Africa.

Cities Cities by number of times as host:

Times hosted City Years hosted 4 Vienna 1924, 1936, 1970, 1992 Copenhagen 1956, 1962, 1975, 2011 3 Antwerp 1911, 1928, 1985 Bern 1913, 1939, 1947 Paris 1914, 1932, 1950 Budapest 1929, 1966, 1983 Warsaw 1937, 1959, 1987 Rotterdam 1967, 1988, 2008 2 Geneva 1906, 1925 Kraków 1912, 1931 The Hague 1920, 1964 Prague 1921, 1996 Stockholm 1934, 1980 London 1938, 1971 Zagreb 1953, 2001 Helsinki 1969, 1922 Reykjavík 1977, 2013 Beijing 1986, 2004 Havana 1990, 2010 Seoul 1994, 2017 The remaining cities hosted the event only once.

World Esperanto Congress

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