First of all I'd like to give you an idea of how big cities/villages/capitals are:
Size of cities:
A village would be zero to four-hundred people,
A small town would be four-hundred to a thousand people,
A town would be a thousand people to three thousand people,
a large town would be three thousand to five thousand people,
a small city would be five thousand to ten thousand people,
a city would be ten thousand to fifteen thousand people,
a large city would be fifteen thousand to fifty thousand people,
and a capital would be over eighty thousand people.

Now the cencus (was taken 97 years BS)
Main cities (at last census):

Krolon : 49,009 Helvorr, 512 Kylon.
Slen Isle: 16,820 Selentae and 572 Helvorr
Grenja: 101,788 Helvorr, 649 Gragon, 411 Selentae, 47 Kylor, 678 Thorrack.
Hom: 62,781 Helvorr, 12,065 Thorrack, 4,092 Gragon, 7 Selentae.
Vortorr: 83,120 Thorrack, 15,627 Helvorr.
Kroshlar (main town): 24,919 Thorrack, 716 Gragon
Temples of Kylor: 67,261 Kylor, 1,209 Selentae, 419 Gragon, 591 Helvorr.

Total: 455,113

Blankill: 78,419 Gragon, 683 Thorrack, 62 Kylor.
Forsglen: 23,493 Selentae, 744 Kylor.
Grodpaw: 28,989 Gragon, 867 Thorrack.
Niehie: 8,039 Helvorr, 2,621 Thorrack, 1,276 Gragon, 87 Kylor.
Forhens dock: 17,008 Helvorr, 12,230 Thorrack, 9,483 Gragon, 288 Kylor, 973.
Teckorr: 48,175 Thorrack.

Total: 717,880

Smaller cities:

Farcal: 8,193 Gragon.
Panatil: 14,739 Helvorr.
Seften: 7,048 Selentae
Lesdef: 11,322
Faelenork: 6,703

Total: 766,055

Military census:

Grago main militia: 33,419 footmen, 9,251 spear-hurlers.
Kyloren main militia: 25,698 militia, 2,188 mages.
Selentae guards: 8,760 Selentae guards.
Thorrack army: 62,918 footmen, 7,805 berserkers.
Helvorri militia: 47,809 footmen, 2,101

Total: 965,864