The African Dude,
This question is not as simple as that. First, CofG is expressed in %MAC, so if that's not what you want, how would you like it described? Station numbers or inches from the nose can probably be derived from %MAC...
Secondly, the CofG limits depend entirely on the take off weight of the aircraft.
I just happen to have a 747-400 balance chart to hand, and for example, if very light, the %MAC range is 18% - 28% (i.e.10%), but at 360,000kg the range is 10.5% - 31% (20.5% - double the range of light weight).
I may be able to get a 737-300 balance chart to read off the numbers for you, but I need a weight and how you would like it expressed.
Regards..