All perfect praise be to Allah, The Lord of the Worlds. I testify that there is none worthy of worship except Allah, and that Muhammad is His slave and Messenger.
The Athaan is a recommended Sunnah and some scholars are of the view that it is a mandatory act. But we believe that the first opinion is the most correct. So, it is Sunnah for you to call the Athaan whether or not you are in a place where people call Athaan. However, if you do not call the Athaan, your Prayer is valid even if the Sunnah is to call the Athaan and the Iqaamah whether or not there are mosques in the area.
For more benefit on praying without the Athaan or Iqaamah, please refer to Fataawa 82492 and 312118.
Allah knows best.