alternatehistory.com

223 BC
Data update vol2



Top 10 cities

Alexandria 350000 pop
Pataliputra 350000
Massalia 280000
Syracuse 250000
Pratisthana 250000
Carthage 200000
Seleucia 200000
Antioch 150000
Ujjain 150000
Rome 100000

Top 5 richest states

Ptolemaic Empire
Seleucids Empire
Diodotian Empire
Satavahana Kingdom
Massaliot League

Estimate of the Population of this ATL

Greek peninsula 2,5 mil pop
Anatolia 7 mil(1 mil Greeks)
Greater Syria 4 mil(0,4 mil Greeks)
Egypt 4,5 mil(0,4+ mil Greeks)
Italy 3 mil(0,3+ mil Greeks)
Sicily 0,7
Iberia 3 mil
North Gaul 3mil
North Balkans 2 mil
South Gaul 1,8mil(0,5+ mil Greeks)
Persia/central asia 25+ mil(0,5+ mil Greeks)
India 45+ Mil

Many thanks to @RogueTraderEnthusiast for his tips!

Some pop data links:

https://en.wikipedia.org/wiki/Demography_of_the_Roman_Empire
https://www.princeton.edu/~pswpc/pdfs/fischer-bovet/100701.pdf
https://en.wikipedia.org/wiki/Classical_demography#Further_reading