Does the number of stamps needed to mail something...?

Question

...dependent on the weight of the envelope or the distance it travels to get to its destination?

Answer 1

it depends on both. go to http://postcalc.usps.gov/    to determine how much it will cost

Answer 2

Both ,It is calculated on weight and distance/zone.By air or surfaces( on horseback)

Answer 3

Size, weight, destination and method of delivery (first class, economy or surface.....first class is approximately double surface rate)