NPC CITIES
Level One ~ 2,500 warriors
Level Two ~ 5,500 warriors
Level Three ~ 13,000 warriors
Level Four ~ 20,000 warriors
Level Five ~ 29,000 warriors
Level Six ~ 35,000 warriors
Level Seven ~ 55,000 warriors
Level Eight ~ 70,000 warriors
Level Nine ~ 90,000 warriors
Level Ten ~ ?? (Alot more than 90,000)

VALLEYS
Level One ~ 600 warriors
Level Two ~ 1,200 warriors
Level Three ~ 1,600 warriors
Level Four ~ 2,200 warriors
Level Five ~ 3,000 warriors
Level Six ~ 3,500 warriors
Level Seven ~ 5,200 warriors
Level Eight ~ 9,000 warriors
Level Nine ~ 16,000 warriors
Level Ten ~ 20,000 warriors (or more)