I just found this on a wiki...They say there is about 2-4 million Boyz on Armegeddon. Well Arkona is still being built...Gonna go WaAAGGGGG there. http://wh40k.lexicanum.com/wiki/Armageddon_Ork_Forces
Well thats the population of a city and seeing as each ork releases roughly around 10-40 thousand spores over a period of 2 months and about 400 of these land amd start spawning orkoids and after about a year the things makes orks and about 40 orks come from a mushwomb but take away that guard are still killing orks at the rate of about a 400,000 a year. Someone do the math om this please to see how many orks there would be in 1 and 1/2 years
LOL in other words...lotz of boys and lots of ead umies....not including all the tanks, aircraft(they shouldn't be able to fly)...and big gunz, meks, gargaunts...and lots of other dakka.