Since people do not live in rivers, you may be asking which country that is near a river has a low population density. The two countries that might meet that description are Greenland and Mongolia. Both are in proximity to water (Mongolia is land-locked, but there are a few rivers; Greenland is an island, but it has an arctic climate), and yet both have a very low population density.
Saturn has the lowest density, but it has more than 31 moons.
Hydrogen with 0.09 density
Mercury is the smallest of the four inner planets and closest to the sun. It is also the smallest of all eight planets.
Harmful gas
Jupiter
Antarctica has the lowest population density of any continent, as it is largely covered in ice and uninhabitable for humans.
Antarctica has the lowest population density of both organisms and humans. The harsh climate and limited resources make it extremely challenging for life to thrive in this continent. Additionally, human presence in Antarctica is restricted to research stations, resulting in a very low population density.
No, Mongolia has the lowest population density of any country at 1.7/km2. Japan actually has the 23rd largest population density of any country.
The moon has a remarkably low population density.
no
The population density of High River is 905.5 people per square kilometer.
Khuzdar district in Balochistan has the lowest population density in Pakistan. According to 1998 it is 4 (People/km square).
Alaska
Russia.
Vatikan
Australia.
Alaska