The wizarding world spans the whole globe.
Even just considering the seven books themselves and the supplementary books Quidditch through the Ages, Fantastic Beasts and Where to Find Them, and The Tales of Beedle the Bard, it’s clear that there are wizards around the world. Quidditch through the Ages has the most information about international wizards, since if there’s Quidditch in a country there also must be a wizarding community there.
Africa:
Wizards from Africa were attending the Quidditch World Cup.
“Three African wizards sat in serious conversation, all of them wearing long white robes and roasting what looked like a rabbit on a bright purple fire, while a group of middle-aged American witches sat gossiping happily beneath a spangled banner stretched between their tents which read: The Salem Witches’ Institute.”
-Harry Potter and the Goblet of Fire, Chapter 7 (Bagman and Crouch)
Quidditch is fairly popular there, as several countries have their own teams, and there’s also the All Africa Cup, which is presumably a Quidditch competition for only African countries.
“The broomstick was probably introduced to the African continent by European wizards and witches travelling there in search of information on alchemy and astronomy, subjects in which African wizards have always been particularly skilled. Though not yet as widely played as in Europe, Quidditch is becoming increasingly popular throughout the African continent.
Uganda in particular is emerging as a keen Quidditch-playing nation. Their most notable club, the Patonga Proudsticks, held the Montrose Magpies to a draw in 1986 to the astonishment of most of the Quidditch-playing world. Six Proudstick players recently represented Uganda in the Quidditch World Cup, the highest number of fliers from a single team ever united on a national side. Other African teams of note include the Tchamba Charmers (Togo), masters of the reverse-pass; the Gimbi Giant-Slayers (Ethiopia), twice winners of the All-Africa Cup; and the Sumbawanga Sunrays (Tanzania), a highly popular team whose formation looping has delighted crowds across the world.”
Quidditch Through the Ages
Supplementary information: Pottermore has an article on Uagadou, the African wizarding school.
Asia:
There are Ministries of Magic, and therefore wizards, in several Asian countries.
“Quidditch has never achieved great popularity in the East, as the flying broomstick is a rarity in countries where the carpet is still the preferred mode of travel. The Ministries of Magic in countries such as India, Pakistan, Bangladesh, Iran and Mongolia, all of whom maintain a flourishing trade in flying carpets, regard Quidditch with some suspicion, though the sport does have some fans among witches and wizards on the street.”
Quidditch Through the Ages
Japan has several Quidditch teams.
“The exception to this general rule is Japan, where Quidditch has been gaining steadily in popularity over the last century. The most successful Japanese team, the Toyohashi Tengu, narrowly missed a win over Lithuania’s Gorodok Gargoyles in 1994.”
Quidditch Through the Ages
Supplementary information: Pottermore has an article on Mahoutokoro, the Japanese wizarding school.
Australia:
There’s a wizarding population in New Zealand as well, with its own Ministry of Magic.
“The New Zealand Ministry of Magic has certainly spent much time and money preventing Muggles getting hold of Maori art of that period which clearly depicts white wizards playing Quidditch (these carvings and paintings arc now on display at the Ministry of Magic in Wellington).”
Quidditch Through the Ages
Australia is also explicitly referenced as having a wizarding community.
“The Thundelarra Thunderers and the Woollongong Warriors have dominated the Australian League for the best part of a century. Their enmity is legendary among the Australian magical community, so much so that a popular response to an unlikely claim or boast is ‘Yeah, and I think I’ll volunteer to ref the next Thunderer-Warrior game’.”
Quidditch Through the Ages
Europe:
In addition to the countries mentioned in the question, there are others in Europe that also have wizarding communities, such as Germany, Luxembourg, Portugal, Poland, and Lithuania.
“In Germany we find the Heidelberg Harriers, the team that the Irish Captain Darren O’Hare once famously said was ‘fiercer than a dragon and twice as clever’. Luxembourg, always a strong Quidditch nation, has given us the Bigonville Bombers, celebrated for their offensive strategies and always among the top goal-scorers. The Portuguese team Braga Broomfleet have recently broken through into the top levels of the sport with their groundbreaking Beater-marking system; and the Polish Grodzisk Goblins gave us arguably the world’s most innovative Seeker, Josef Wronski.”
Quidditch Through the Ages
Supplementary information: Pottermore has articles on Beauxbatons, and Durmstrang, the European wizarding schools mentioned in “Harry Potter and the Goblet of Fire”.
North America:
There are wizards in the USA.
“The rival charms of Quodpot notwithstanding, Quidditch is gaining popularity in the United States, Two teams have recently broken through at international level: the Sweetwater All-Stars from Texas, who gained a well-deserved win over the Quiberon Quafflepunchers in 1993 after a thrilling five-day match, and the Fitchburg Finches from Massachusetts, who have now won the US League seven times and whose Seeker, Maximus Brankovitch III, has captained America at the last two World Cups.”
Quidditch Through the Ages
Canada also has several of its own Quidditch teams.
“In later times, however, Canada has given us three of the most accomplished Quidditch teams in the world: the Moose Jaw Meteorites, the Haileybury Hammers and the Stonewall Stormers.”
Quidditch Through the Ages
Supplementary information: Pottermore has several articles on the history of the wizarding world in America, MACUSA, which is the American wizarding government (instead of a Ministry of Magic), and Ilvermorny, the American wizarding school.
South America:
There’s a wizarding school in Brazil.
“More to stop Ron smirking than anything, Harry hurriedly pointed out a large group of teenagers whom he had never seen before.
‘Who d’you reckon they are?’ he said. ‘They don’t go to Hogwarts, do they?’
‘’Spect they go to some foreign school,’ said Ron. ‘I know there are others, never met anyone who went to one though. Bill had a pen-friend at a school in Brazil … this was years and years ago … and he wanted to go on an exchange trip but Mum and Dad couldn’t afford it.”
-Harry Potter and the Goblet of Fire, Chapter 7 (Bagman and Crouch)
Many Latin American countries have Quidditch teams, and the region has their own Cup.
“Quidditch is played throughout South America, though the game must compete with the popular Quodpot here as in the North. Argentina and Brazil both reached the quarter-finals of the World Cup in the last century. Undoubtedly the most skilled Quidditch nation in South America is Peru, which is tipped to become the first Latin World Cup winner within ten years. Peruvian warlocks are believed to have had their first exposure to Quidditch from European wizards sent by the International Confederation to monitor the numbers of Vipertooths (Peru’s native dragon). Quidditch has become a veritable obsession of the wizard community there since that time, and their most famous team, the Tarapoto Tree-Skimmers, recently toured Europe to great acclaim.”
Quidditch Through the Ages
Supplementary information: Pottermore has an article on Castelobruxo, the Brazilian wizarding school.
