The human sex ratio

Human sex ratio

In anthropology and demography, the human sex ratio is the sex ratio for Homo sapiens . Like most sexual species, the sex ratio is approximately 1:1. In humans the secondary sex ratio is commonly assumed to be 105 boys to 100 girls, an assumption that is a subject of debate in the scientific...

is the number of males for each female in a population. This is a list of sex ratios by country or region.

Sex ratios

Data taken from The World Factbook

The World Factbook

The World Factbook is a reference resource produced by the Central Intelligence Agency of the United States with almanac-style information about the countries of the world. The official paper copy version is available from the National Technical Information Service and the Government Printing Office...

(2011). It shows the male to female sex ratio as estimated by United States' CIA. However, there are differences between the estimates by The World Factbook and numbers reported by the census offices of respective countries. For example, The World Factbook in 2011 reported Switzerland's sex ratio at birth as 1.05, while Switzerland's Federal Office of Statistics in 2011 reported Switzerland's sex ratio at birth as 1.07 per its birth records census data.. Similar differences between estimates by "The World Factbook" and census numbers from birth records are known for Sweden, Norway, Ireland, India and Japan.

A ratio above 1 means there are more males than females, while a ratio below 1 means there are more females than males. A ratio of 1 means there are equal numbers of females and males.

Country/region	at birth	under 15	15–64	over 65	total
World World population The world population is the total number of living humans on the planet Earth. As of today, it is estimated to be  billion by the United States Census Bureau...	1.07	1.06	1.02	0.78	1.01
Afghanistan	1.05	1.05	1.05	0.92	1.05
Albania	1.118	1.1	1.05	0.87	1.04
Algeria	1.05	1.04	1.02	0.86	1.01
American Samoa	1.06	1.04	1.03	0.88	1.02
Andorra	1.066	1.06	1.09	0.99	1.07
Angola	1.05	1.02	1.03	0.79	1.02
Anguilla	1.031	1.05	0.9	0.93	0.94
Antigua and Barbuda	1.05	1.03	0.87	0.76	0.9
Argentina	1.052	1.05	1	0.7	0.97
Armenia	1.124	1.15	0.88	0.62	0.89
Aruba	1.021	1.01	0.92	0.66	0.9
Australia	1.055	1.05	1.03	0.84	1
Austria	1.051	1.05	1.01	0.71	0.95
Azerbaijan	1.116	1.13	0.97	0.58	0.97
	1.03	1.03	0.97	0.62	0.96
Bahrain	1.028	1.02	1.33	1.13	1.24
Bangladesh	1.04	1.01	0.89	0.93	0.93
Barbados	1.013	1	0.97	0.64	0.94
Belarus	1.062	1.06	0.94	0.47	0.87
Belgium	1.045	1.04	1.02	0.71	0.96
Belize	1.05	1.04	1.02	0.91	1.03
Benin	1.05	1.04	0.99	0.69	1
Bermuda	1.015	1.01	0.97	0.71	0.94
Bhutan	1.05	1.04	1.13	1.12	1.1
Bolivia	1.05	1.04	0.96	0.79	0.98
Bosnia and Herzegovina	1.074	1.07	1.02	0.69	0.97
Botswana	1.03	1.04	1.02	0.68	1.01
Brazil	1.05	1.04	0.98	0.73	0.98
British Virgin Islands	1.05	1.03	1.05	1.07	1.05
Brunei	1.047	1.06	0.99	0.94	1
Kingdom of Bulgaria	1.06	1.05	0.97	0.68	0.92
Burkina Faso	1.03	1.01	1	0.64	0.99
Myanmar	1.06	1.04	0.99	0.77	0.99
Burundi	1.03	1.01	0.97	0.67	0.98
Cambodia	1.045	1.02	0.95	0.6	0.96
Cameroon	1.03	1.02	1.01	0.85	1.01
Canada	1.056	1.05	1.02	0.78	0.98
Cape Verde	1.03	1.01	0.94	0.61	0.94
Cayman Islands	1.016	1.01	0.95	0.89	0.96
Central African Republic	1.03	1.01	0.98	0.67	0.98
Chad	1.04	1.03	0.85	0.73	0.92
Chile	1.05	1.05	1	0.72	0.98
Mainland China	1.133	1.17	1.06	0.93	1.06
Colombia	1.06	1.05	0.97	0.74	0.98
Comoros	1.03	1.01	0.98	0.83	0.98
Democratic Republic of the Congo	1.03	1.01	0.99	0.69	0.99
Republic of the Congo	1.03	1.01	0.99	0.7	0.99
Cook Islands	1.048	1.13	1.07	0.96	1.07
Costa Rica	1.05	1.05	1.01	0.86	1.01
Côte d'Ivoire	1.03	1.02	1.04	0.99	1.03
Independent State of Croatia	1.055	1.06	0.99	0.64	0.93
Cuba	1.06	1.06	1	0.83	0.99
Cyprus	1.05	1.06	1.08	0.77	1.04
Czech Republic	1.059	1.06	1.01	0.66	0.95
Denmark	1.055	1.05	1.01	0.78	0.98
Djibouti	1.03	1	0.8	0.81	0.86
Dominica	1.05	1.04	1.05	0.76	1.02
Dominican Republic	1.04	1.04	1.04	0.86	1.03
Ecuador	1.05	1.04	0.97	0.93	0.99
Egypt	1.05	1.05	1.03	0.83	1.03
El Salvador	1.05	1.05	0.89	0.81	0.93
Equatorial Guinea	1.03	1.03	0.97	0.78	0.99
Eritrea	1.03	1.01	0.96	0.82	0.98
Estonia	1.063	1.06	0.91	0.49	0.84
Ethiopia	1.03	1	0.96	0.75	0.97
European Union	1.06	1.05	1	0.73	0.95
Faroe Islands	1.071	1.07	1.15	0.9	1.09
Fiji	1.05	1.04	1	0.81	1
Finland	1.04	1.04	1.02	0.69	0.96
Early Modern France	1.051	1.05	1	0.72	0.96
French Polynesia	1.05	1.04	1.07	1.02	1.06
Gabon	1.03	1.01	1	0.72	0.99
	1.03	1.01	0.98	0.98	1
Gaza Strip	1.06	1.06	1.05	0.68	1.04
Georgia (country)	1.113	1.15	0.93	0.66	0.91
Germany	1.055	1.05	1.04	0.72	0.97
Ghana	1.03	1.02	1	0.84	1
Gibraltar	1.07	1.06	1.02	0.93	1.01
Greece	1.064	1.06	1	0.78	0.96
Greenland	1.051	1.03	1.15	1.05	1.12
Grenada	1.098	1.05	1.04	0.82	1.02
Guam	1.06	1.07	1.04	0.85	1.03
Guatemala	1.05	1.04	0.94	0.86	0.97
Guernsey	1.05	1.03	0.98	0.77	0.95
Guinea	1.03	1.02	1	0.78	1
Guinea-Bissau	1.03	1	0.93	0.66	0.95
Guyana	1.05	1.04	1	0.71	1
Haiti	1.011	1.02	0.99	0.62	0.98
Honduras	1.05	1.04	1.01	0.81	1.01
Hong Kong	1.075	1.09	0.94	0.88	0.95
Hungary	1.057	1.06	0.98	0.57	0.91
Iceland	1.04	1.03	1.02	0.83	1
India	1.12	1.13	1.07	0.9	1.08
Indonesia	1.05	1.03	1.01	0.8	1
Iran	1.05	1.05	1.02	0.92	1.02
Iraq	1.05	1.03	1.03	0.9	1.02
Republic of Ireland	1.07	1.07	1	0.81	0.99
Isle of Man	1.05	1.05	1.01	0.7	0.96
Israel	1.05	1.05	1.03	0.77	1
Italy	1.07	1.06	1.03	0.72	0.96
Jamaica	1.05	1.03	0.97	0.81	0.98
Japan	1.06	1.06	1.02	0.74	0.95
Jersey	1.08	1.08	1	0.8	0.97
Jordan	1.06	1.04	1.15	0.93	1.1
Kazakhstan	1.06	1.04	0.95	0.54	0.93
Kenya	1.02	1.01	1.01	0.84	1
Kiribati	1.05	1.03	0.98	0.74	0.99
North Korea	1.06	1.03	0.98	0.63	0.95
South Korea	1.07	1.1	1.04	0.67	1
Kuwait	1.04	1.04	1.78	1.66	1.54
Kyrgyzstan	1.05	1.04	0.96	0.64	0.96
Laos	1.05	1.01	0.98	0.76	0.98
Latvia	1.05	1.05	0.95	0.49	0.86
Lebanon	1.05	1.04	0.98	0.82	0.97
Lesotho	1.03	1.01	0.96	0.66	0.96
Liberia	1.03	1	0.98	0.94	0.99
Libya	1.05	1.04	1.06	0.96	1.05
Liechtenstein	1.01	0.99	0.98	0.76	0.94
Lithuania	1.06	1.05	0.96	0.53	0.89
Luxembourg	1.07	1.06	1.02	0.7	0.97
Macau	1.05	1.14	0.88	0.88	0.92
Republic of Macedonia	1.08	1.08	1.02	0.77	1
Madagascar	1.03	1.01	0.99	0.8	0.99
Malawi	1.02	1	1.01	0.74	1
Malaysia	1.07	1.06	1.01	0.79	1.01
Maldives	1.05	1.04	1.62	1	1.44
Mali	1.03	1.02	0.99	0.64	0.99
Malta	1.06	1.06	1.03	0.76	0.99
Marshall Islands	1.05	1.04	1.05	0.94	1.04
Mauritania	1.03	1.01	0.89	0.74	0.93
Mauritius	1.05	1.03	0.99	0.67	0.97
Mayotte	1.03	1.01	1.16	1.04	1.08
Mexico	1.05	1.04	0.94	0.82	0.96
	1.05	1.03	0.99	0.74	1
Moldova	1.06	1.06	0.94	0.58	0.91
Monaco	1.06	1.05	0.98	0.68	0.91
Mongolia	1.05	1.04	1	0.77	1
Kingdom of Montenegro	1.072	0.96	1.08	0.68	0.99
Montserrat	1.03	1.08	0.92	1.95	1.01
Morocco	1.05	1.04	1	0.75	0.99
Mozambique	1.02	1.01	0.96	0.71	0.97
Namibia	1.03	1.02	1.02	0.81	1.01
Nauru	1.05	1.04	0.97	1.04	1
Nepal	1.04	1.04	0.92	0.89	0.96
Netherlands	1.05	1.05	1.02	0.76	0.98
Netherlands Antilles	1.05	1.05	0.93	0.68	0.93
New Caledonia	1.05	1.04	1.01	0.86	1.01
New Zealand	1.05	1.05	1	0.84	0.99
Nicaragua	1.05	1.04	1	0.78	1
Niger	1.03	1.02	0.99	0.81	1
Nigeria	1.06	1.05	1.04	0.94	1.04
Northern Mariana Islands	1.06	1.1	0.67	1.08	0.74
Norway	1.05	1.05	1.03	0.75	0.98
Oman	1.05	1.04	1.38	1.32	1.22
Pakistan	1.10	1.06	1.05	0.88	1.09
Palau	1.06	1.06	1.26	0.45	1.14
Panama	1.04	1.04	1.02	0.87	1.02
Papua New Guinea	1.05	1.03	1.06	0.86	1.04
Paraguay	1.05	1.03	1.01	0.86	1.01
Peru	1.05	1.04	1.01	0.89	1.01
Philippines	1.05	1.04	1	0.76	1
Poland	1.06	1.06	0.99	0.62	0.94
Portugal	1.07	1.09	0.99	0.7	0.95
Puerto Rico	1.05	1.05	0.93	0.76	0.92
Qatar	1.06	1.06	2.46	1.38	2
Kingdom of Romania	1.06	1.05	0.99	0.69	0.95
Russia	1.06	1.05	0.92	0.44	0.86
Rwanda	1.03	1.01	1	0.66	0.99
Saint Barthélemy	1.05	1.06	1.19	0.99	1.14
Saint Helena	1.05	1.04	1.04	0.9	1.03
Saint Kitts and Nevis	1.06	1.05	1	0.72	0.99
Saint Lucia	1.06	1.05	0.94	0.82	0.96
Saint Martin (France)	1.04	0.99	0.91	0.81	0.92
Saint-Pierre and Miquelon	1.05	1.04	1.03	0.86	1.01
Saint Vincent and the Grenadines	1.03	1.02	1.06	0.82	1.03
Samoa	1.05	1.04	1.1	0.8	1.06
San Marino	1.09	1.08	0.92	0.76	0.91
São Tomé and Príncipe	1.03	1.03	0.94	0.82	0.98
Saudi Arabia	1.05	1.04	1.29	1.06	1.18
Senegal	1.03	1.01	0.98	0.88	0.99
Serbia	1.07	1.07	1	0.7	0.95
Seychelles	1.03	1.05	1.08	0.59	1.03
Sierra Leone	1.03	0.96	0.92	0.84	0.94
Singapore	1.08	1.08	0.95	0.8	0.95
Slovakia	1.05	1.05	0.99	0.6	0.94
Slovenia	1.07	1.06	1.02	0.64	0.95
Solomon Islands	1.05	1.04	1.02	0.9	1.02
Somalia	1.03	1	1	0.72	1
South Africa	1.02	1	1.02	0.69	0.99
Spain	1.07	1.06	1.01	0.72	0.96
Sri Lanka	1.04	1.04	0.96	0.87	0.97
Sudan	1.05	1.04	1.01	1.07	1.03
Suriname	1.07	1.04	0.99	0.76	0.99
Swaziland	1.03	1.02	0.93	0.59	0.95
Sweden	1.06	1.06	1.03	0.79	0.98
Switzerland	1.05	1.08	1.02	0.71	0.97
Syria	1.06	1.06	1.05	0.89	1.05
Republic of China	1.09	1.08	1.02	0.94	1.02
Tajikistan	1.05	1.04	0.98	0.74	0.99
Tanzania	1.03	1	0.97	0.78	0.98
Thailand	1.05	1.05	0.98	0.83	0.98
East Timor	1.05	1.03	1.04	0.91	1.03
Togo	1.03	1.01	0.96	0.65	0.97
Tonga	1.05	1.04	0.99	0.71	0.99
Trinidad and Tobago	1.03	1.05	1.05	0.75	1.02
Tunisia	1.07	1.07	1.01	0.87	1.01
Turkey	1.05	1.05	1.02	0.84	1.02
Turkmenistan	1.05	1.02	0.98	0.77	0.98
Turks and Caicos Islands	1.05	1.04	1.1	0.95	1.07
Tuvalu	1.05	1.04	0.96	0.59	0.96
Uganda	1.03	1.01	1.01	0.71	1
Ukraine	1.06	1.06	0.92	0.5	0.86
United Arab Emirates	1.05	1.05	2.74	1.82	2.19
United Kingdom	1.05	1.05	1.03	0.76	0.98
United States	1.05	1.04	1.00	0.75	0.97
United States Virgin Islands	1.06	1.03	0.88	0.82	0.9
Uruguay	1.04	1.03	0.99	0.67	0.95
Uzbekistan	1.06	1.05	0.99	0.75	0.99
Vanuatu	1.05	1.04	1.04	1.06	1.04
Venezuela	1.05	1.03	0.97	0.8	0.98
Vietnam	1.07	1.08	0.99	0.63	0.98
Wallis and Futuna	1.05	1.11	1	0.83	1.01
West Bank	1.06	1.05	1.05	0.71	1.04
Western Sahara	1.04	1.03	0.97	0.73	0.99
Yemen	1.05	1.04	1.03	0.92	1.03
Zambia	1.03	1.01	1	0.7	1
Zimbabwe	1.03	1.02	0.81	0.78	0.91