Have a symptom?
See what questions
a doctor would ask.
Diseases » Williams Syndrome » Country Statistics

Statistics by Country for Williams Syndrome

Prevalance of Williams Syndrome:

estimated 1 per 7,500 - 20,000 people suffer from Williams syndrome, Genetics Home Reference website

Prevalance Rate for Williams Syndrome:

approx 1 in 7,500 or 0.01% or 36,266 people in USA [about data]

Extrapolation of Prevalence Rate of Williams Syndrome to Countries and Regions:

WARNING! EXTRAPOLATION ONLY! NOT BASED ON COUNTRY-SPECIFIC DATA SOURCES. The following table attempts to extrapolate the above prevalence rate for Williams Syndrome to the populations of various countries and regions. These prevalence extrapolations for Williams Syndrome are only estimates, based on applying the prevalence rates from the US (or a similar country) to the population of other countries, and therefore may have very limited relevance to the actual prevalence of Williams Syndrome in any region:

Country/Region Extrapolated Prevalence Population Estimated Used
Williams Syndrome in North America (Extrapolated Statistics)
USA 39,154 293,655,4051
Canada 4,334 WARNING! (Details) 32,507,8742
Mexico 13,994 WARNING! (Details) 104,959,5942
Williams Syndrome in Central America (Extrapolated Statistics)
Belize 36 WARNING! (Details) 272,9452
Guatemala 1,904 WARNING! (Details) 14,280,5962
Nicaragua 714 WARNING! (Details) 5,359,7592
Williams Syndrome in Caribbean (Extrapolated Statistics)
Puerto Rico 519 WARNING! (Details) 3,897,9602
Williams Syndrome in South America (Extrapolated Statistics)
Brazil 24,546 WARNING! (Details) 184,101,1092
Chile 2,109 WARNING! (Details) 15,823,9572
Colombia 5,641 WARNING! (Details) 42,310,7752
Paraguay 825 WARNING! (Details) 6,191,3682
Peru 3,672 WARNING! (Details) 27,544,3052
Venezuela 3,335 WARNING! (Details) 25,017,3872
Williams Syndrome in Northern Europe (Extrapolated Statistics)
Denmark 721 WARNING! (Details) 5,413,3922
Finland 695 WARNING! (Details) 5,214,5122
Iceland 39 WARNING! (Details) 293,9662
Sweden 1,198 WARNING! (Details) 8,986,4002
Williams Syndrome in Western Europe (Extrapolated Statistics)
Britain (United Kingdom) 8,036 WARNING! (Details) 60,270,708 for UK2
Belgium 1,379 WARNING! (Details) 10,348,2762
France 8,056 WARNING! (Details) 60,424,2132
Ireland 529 WARNING! (Details) 3,969,5582
Luxembourg 61 WARNING! (Details) 462,6902
Monaco 4 WARNING! (Details) 32,2702
Netherlands (Holland) 2,175 WARNING! (Details) 16,318,1992
United Kingdom 8,036 WARNING! (Details) 60,270,7082
Wales 389 WARNING! (Details) 2,918,0002
Williams Syndrome in Central Europe (Extrapolated Statistics)
Austria 1,089 WARNING! (Details) 8,174,7622
Czech Republic 166 WARNING! (Details) 1,0246,1782
Germany 10,989 WARNING! (Details) 82,424,6092
Hungary 1,337 WARNING! (Details) 10,032,3752
Liechtenstein 4 WARNING! (Details) 33,4362
Poland 5,150 WARNING! (Details) 38,626,3492
Slovakia 723 WARNING! (Details) 5,423,5672
Slovenia 268 WARNING! (Details) 2,011,473 2
Switzerland 993 WARNING! (Details) 7,450,8672
Williams Syndrome in Eastern Europe (Extrapolated Statistics)
Belarus 1,374 WARNING! (Details) 10,310,5202
Estonia 178 WARNING! (Details) 1,341,6642
Latvia 307 WARNING! (Details) 2,306,3062
Lithuania 481 WARNING! (Details) 3,607,8992
Russia 19,196 WARNING! (Details) 143,974,0592
Ukraine 6,364 WARNING! (Details) 47,732,0792
Williams Syndrome in the Southwestern Europe (Extrapolated Statistics)
Azerbaijan 1,049 WARNING! (Details) 7,868,3852
Georgia 625 WARNING! (Details) 4,693,8922
Portugal 1,403 WARNING! (Details) 10,524,1452
Spain 5,370 WARNING! (Details) 40,280,7802
Williams Syndrome in Southern Europe (Extrapolated Statistics)
Greece 1,419 WARNING! (Details) 10,647,5292
Italy 7,740 WARNING! (Details) 58,057,4772
Williams Syndrome in the Southeastern Europe (Extrapolated Statistics)
Albania 472 WARNING! (Details) 3,544,8082
Bosnia and Herzegovina 54 WARNING! (Details) 407,6082
Bulgaria 1,002 WARNING! (Details) 7,517,9732
Croatia 599 WARNING! (Details) 4,496,8692
Macedonia 272 WARNING! (Details) 2,040,0852
Romania 2,980 WARNING! (Details) 22,355,5512
Serbia and Montenegro 1,443 WARNING! (Details) 10,825,9002
Williams Syndrome in Northern Asia (Extrapolated Statistics)
Mongolia 366 WARNING! (Details) 2,751,3142
Williams Syndrome in Central Asia (Extrapolated Statistics)
Kazakhstan 2,019 WARNING! (Details) 15,143,7042
Tajikistan 934 WARNING! (Details) 7,011,556 2
Uzbekistan 3,521 WARNING! (Details) 26,410,4162
Williams Syndrome in Eastern Asia (Extrapolated Statistics)
China 173,179 WARNING! (Details) 1,298,847,6242
Hong Kong s.a.r. 914 WARNING! (Details) 6,855,1252
Japan 16,977 WARNING! (Details) 127,333,0022
Macau s.a.r. 59 WARNING! (Details) 445,2862
North Korea 3,026 WARNING! (Details) 22,697,5532
South Korea 6,431 WARNING! (Details) 48,233,7602
Taiwan 3,033 WARNING! (Details) 22,749,8382
Williams Syndrome in Southwestern Asia (Extrapolated Statistics)
Turkey 9,185 WARNING! (Details) 68,893,9182
Williams Syndrome in Southern Asia (Extrapolated Statistics)
Afghanistan 3,801 WARNING! (Details) 28,513,6772
Bangladesh 18,845 WARNING! (Details) 141,340,4762
Bhutan 291 WARNING! (Details) 2,185,5692
India 142,009 WARNING! (Details) 1,065,070,6072
Pakistan 21,226 WARNING! (Details) 159,196,3362
Sri Lanka 2,654 WARNING! (Details) 19,905,1652
Williams Syndrome in Southeastern Asia (Extrapolated Statistics)
East Timor 135 WARNING! (Details) 1,019,2522
Indonesia 31,793 WARNING! (Details) 238,452,9522
Laos 809 WARNING! (Details) 6,068,1172
Malaysia 3,136 WARNING! (Details) 23,522,4822
Philippines 11,498 WARNING! (Details) 86,241,6972
Singapore 580 WARNING! (Details) 4,353,8932
Thailand 8,648 WARNING! (Details) 64,865,5232
Vietnam 11,021 WARNING! (Details) 82,662,8002
Williams Syndrome in the Middle East (Extrapolated Statistics)
Gaza strip 176 WARNING! (Details) 1,324,9912
Iran 9,000 WARNING! (Details) 67,503,2052
Iraq 3,383 WARNING! (Details) 25,374,6912
Israel 826 WARNING! (Details) 6,199,0082
Jordan 748 WARNING! (Details) 5,611,2022
Kuwait 301 WARNING! (Details) 2,257,5492
Lebanon 503 WARNING! (Details) 3,777,2182
Saudi Arabia 3,439 WARNING! (Details) 25,795,9382
Syria 2,402 WARNING! (Details) 18,016,8742
United Arab Emirates 336 WARNING! (Details) 2,523,9152
West Bank 308 WARNING! (Details) 2,311,2042
Yemen 2,669 WARNING! (Details) 20,024,8672
Williams Syndrome in Northern Africa (Extrapolated Statistics)
Egypt 10,148 WARNING! (Details) 76,117,4212
Libya 750 WARNING! (Details) 5,631,5852
Sudan 5,219 WARNING! (Details) 39,148,1622
Williams Syndrome in Western Africa (Extrapolated Statistics)
Congo Brazzaville 399 WARNING! (Details) 2,998,0402
Ghana 2,767 WARNING! (Details) 20,757,0322
Liberia 452 WARNING! (Details) 3,390,6352
Niger 1,514 WARNING! (Details) 11,360,5382
Nigeria 2,366 WARNING! (Details) 12,5750,3562
Senegal 1,446 WARNING! (Details) 10,852,1472
Sierra leone 784 WARNING! (Details) 5,883,8892
Williams Syndrome in Central Africa (Extrapolated Statistics)
Central African Republic 498 WARNING! (Details) 3,742,4822
Chad 1,271 WARNING! (Details) 9,538,5442
Congo kinshasa 7,775 WARNING! (Details) 58,317,0302
Rwanda 1,098 WARNING! (Details) 8,238,6732
Williams Syndrome in Eastern Africa (Extrapolated Statistics)
Ethiopia 9,511 WARNING! (Details) 71,336,5712
Kenya 4,397 WARNING! (Details) 32,982,1092
Somalia 1,107 WARNING! (Details) 8,304,6012
Tanzania 4,809 WARNING! (Details) 36,070,7992
Uganda 3,518 WARNING! (Details) 26,390,2582
Williams Syndrome in Southern Africa (Extrapolated Statistics)
Angola 1,463 WARNING! (Details) 10,978,5522
Botswana 218 WARNING! (Details) 1,639,2312
South Africa 5,926 WARNING! (Details) 44,448,4702
Swaziland 155 WARNING! (Details) 1,169,2412
Zambia 1,470 WARNING! (Details) 11,025,6902
Zimbabwe 489 WARNING! (Details) 1,2671,8602
Williams Syndrome in Oceania (Extrapolated Statistics)
Australia 2,655 WARNING! (Details) 19,913,1442
New Zealand 532 WARNING! (Details) 3,993,8172
Papua New Guinea 722 WARNING! (Details) 5,420,2802

About extrapolations of prevalence and incidence statistics for Williams Syndrome:

WARNING! EXTRAPOLATED STATISTICS ONLY! Not based on data sources from individual countries. These statistics are calculated extrapolations of various prevalence or incidence rates against the populations of a particular country or region. The statistics used for prevalence/incidence of Williams Syndrome are typically based on US, UK, Canadian or Australian prevalence or incidence statistics, which are then extrapolated using only the population of the other country. This extrapolation calculation is automated and does not take into account any genetic, cultural, environmental, social, racial or other differences across the various countries and regions for which the extrapolated Williams Syndrome statistics below refer to. The extrapolation does not use data sources or statistics about any country other than its population. As such, these extrapolations may be highly inaccurate (especially for developing or third-world countries) and only give a general indication (or even a meaningless indication) as to the actual prevalence or incidence of Williams Syndrome in that region. These statistics are presented only in the hope that they may be interesting to some people.

About prevalence and incidence statistics in general for Williams Syndrome:

The word 'prevalence' of Williams Syndrome usually means the estimated population of people who are managing Williams Syndrome at any given time (i.e. people with Williams Syndrome). The term 'incidence' of Williams Syndrome means the annual diagnosis rate, or the number of new cases of Williams Syndrome diagnosed each year (i.e. getting Williams Syndrome). Hence, these two statistics types can differ: a short disease like flu can have high annual incidence but low prevalence, but a life-long disease like diabetes has a low annual incidence but high prevalence. For more information see about prevalence and incidence statistics.

1. US Census Bureau, Population Estimates, 2004
2. US Census Bureau, International Data Base, 2004

By using this site you agree to our Terms of Use. Information provided on this site is for informational purposes only; it is not intended as a substitute for advice from your own medical team. The information on this site is not to be used for diagnosing or treating any health concerns you may have - please contact your physician or health care professional for all your medical needs. Please see our Terms of Use.

Home | Symptoms | Diseases | Diagnosis | Videos | Tools | Forum | About Us | Terms of Use | Privacy Policy | Site Map | Advertise