One of the most frequent requests for OpenHeatMap has been better support for provinces/states outside of the ones I already offer. The bottleneck's been finding the data in a form I can use, with a lot of help from locals I found a handful of usable maps for India, Mexico and Canada, but it was a slow process. All that changed when I discovered the public domain Natural Earth data set. Taking one map containing top-level administrative districts for every country worldwide, I was able to extract the states and provinces for hundreds of nations. This means you can now upload a spreadsheet containing province names for almost any country and get a detailed map.

This is the map you get when you upload Afghan provinces, and below is a complete list of the examples for the countries I support. I'm very excited to see how people are able to use this, so let me know how you get on.

Afghanistan
Angola
Land Islands
Albania
United Arab Emirates
Argentina
Armenia
Australia
Austria
Azerbaijan
Burundi
Belgium
Benin
Burkina Faso
Bangladesh
Bulgaria
Bosnia-Herzegovina
Belarus
Belize
Bolivia
Brazil
Barbados
Brunei
Bhutan
Botswana
Central African Republic
Canada
Cocos (Keeling) Islands
Switzerland
Chile
China
Cote D'Ivoire
Cameroon
The Democratic Republic of the Congo
Congo
Colombia
Costa Rica
Cuba
Christmas Island
CYN
Cyprus
Czech Republic
Germany
Djibouti
Dominica
Denmark
Dominican Republic
Algeria
Ecuador
Egypt
Eritrea
Spain
Estonia
Ethiopia
Finland
Fiji
France
Faroe Islands
Gabon
United Kingdom
Georgia
Guernsey
Ghana
Gibraltar
Guinea
The Gambia
Guinea-Bissau
Equatorial Guinea
Greece
Greenland
Guatemala
French Guiana
Guyana
Heard Island And McDonald Islands
Honduras
Croatia
Haiti
Hungary
Indonesia
India
Ireland
Iran
Iraq
Iceland
Israel
Italy
Jamaica
Jordan
Japan
Kazakhstan
Kenya
Kyrgyz Republic
Cambodia
KO-
South Korea
Kuwait
Lao People's Democratic Republic
Lebanon
Liberia
Libyan Arab Jamahiriya
Sri Lanka
Lesotho
Lithuania
Luxembourg
Latvia
Morocco
Moldova, Republic Of
Madagascar
Mexico
The Former Yugoslav Republic of Macedonia
Mali
Myanmar
Montenegro
Mongolia
Mozambique
Mauritania
Martinique
Malawi
Malaysia
Namibia
New Caledonia
Niger
Norfolk Island
Nigeria
Nicaragua
Netherlands
Norway
Nepal
New Zealand
Oman
Pakistan
Panama
Peru
Philippines
Papua New Guinea
Poland
Democratic People's Republic of Korea
Portugal
Paraguay
Qatar
Romania
Russia
Rwanda
Saudi Arabia
Sudan
Senegal
Svalbard And Jan Mayen
Solomon Islands
Sierra Leone
El Salvador
Somalia
Serbia And Montenegro
Suriname
Slovakia
Slovenia
Sweden
Swaziland
Syria
Chad
Togo
Thailand
Tajikistan
Turkmenistan
Timor-Leste
Trinidad & Tobago
Tunisia
Turkey
Taiwan
Tanzania
Uganda
Ukraine
Uruguay
America
Uzbekistan
Venezuela
Vietnam
Vanuatu
Yemen
South Africa
Zambia
Zimbabwe