Actual population of cities in Civ5 (I grew a city from size 1 to 40 to test this)

93-324,901,000
94-334,778,000
95-344,846,000

Click to expand...

Reminds me of Imperial hive cities from Warhammer.

Reached level 66 with Delhi and tried to keep a record of the city population after level 41.
Here's the data:
41-32.794.000
42-35.083.000
43-37.472.000
44-39.963.000
45-42.559.000
46-45.260.000
47-48.069.000
48-50.988.000
49-54.019.000
50-57.153.000
51-60.422.000
52-63.798.000
53-67.293.000
54-70.913.000
55-74.647.000
56-78.510.000
57-82.499.000
58-86.616.000
59-90.862.000
60-95.240.000
61-99.752.000
62-104.399.000
63-109.182.000
64-114.441.000
65-(Funny story because Delhi grown while i had finished CN tower in an another city)
66-126.234.000
It was quite tiring even in quick pace because i had to stop creating new cities or stop the growth in the them to calculate the population of Delhi. Thanks for the 1-40 level population (they were quite useful in math esp. in the end). Reached level 66 in 2026 with huge map only ten city states, extreme religious and cultural strategy with only one rival civilization (Byzantium) in settler (in order to build all the food-enhancing wonders). I guess i could have reached even greater population if more maritime city states existed (2 btw) but i was afraid if one of was near Delhi. Just to say cultural victory approx.1600 and domination in 2000. Dont try though it's tiring and pointless.