What country are women forced to wear the hijab?

In the Kingdom of Saudi Arabia and in the Islamic Republic of Iran they are required to wear the hijab by law. But there are still many countries in the Middle East which do so, not by law, but by cultural reasons. But there are also many countries in which the wearing of the hijab is optional and there is no forcing on wearing it.

P.S. I am a muslim. But personally I'm against every kind of force. And those muslim families who behave against their daughters wishes they are oppressors. Hijab is a requirement in Islam that women have to follow, but it is upon the woman herself to decide whether or not she should wear the hijab. Insha allah she fulfills this requirement. If the contrary happens, her decision should be respected. At the end of my reply, I would like to quote a verse from the Glorious Qur'an:

"There is no compulsion in religion. Verily, the Right Path has become distinct from the wrong path. Whoever disbelieves in Taghoot and believes in Allah, then he has grasped the most trustworthy handhold that will never break. And Allah is All-Hearer, All-Knower." Qur'an Surat Al-Baqara, Chapter No.2, Verse No.256, [2:256].

Hope this answer satisfies your requirements.