As of 2022, there are approximately 4,862 active satellites in low Earth orbit (LEO), according to the Union of Concerned Scientists' Satellite Database. This number is constantly changing as new satellites are launched and others fall out of orbit or become inactive.

LEO satellites are popular for their proximity to the Earth's surface, which allows for faster data transmission and higher-resolution imaging compared to geostationary satellites in much higher orbits. The increasing use of LEO satellites is driven by advancements in technology, such as miniaturization, increased computing power, and lower launch costs.