The ISS orbits 248 miles above Earth.
If you watched the news a few weeks ago, you'll know this is where British ESA astronaut Tim Peake spent 186 days. He was aboard the ISS (International Space Station) from the 15th of December 2015 to the 18th of June 2016.
If you want to find out more about his mission and what went on, then click this link to see a STEM blog on it! (Coming soon...)