Does anybody know the exact formula for population growth?

[Foolcow (OP)]

As long as lack of infrastructure is not an issue, the population growth percentage seems to be solely a function of current population.  Does anybody know what it is exactly?

[Father Tim]

It was posted in the Mechanics forum, but that was four or five years ago.  It's a simple logarithmic scale from a max of 10% (under a million) down to 2% (more than ten million, or is it more than 25 million?)

[Tarran]

It was posted in the Mechanics forum, but that was four or five years ago.  It's a simple logarithmic scale from a max of 10% (under a million) down to 2% (more than ten million, or is it more than 25 million?)

Actually, it doesn't seem to be that simple. I have a growth rate of 1.1% at 9 billion on earth, and a growth rate of 2.24% at 950 million on mercury.

[Erik L]

Actually, it doesn't seem to be that simple. I have a growth rate of 1.1% at 9 billion on earth, and a growth rate of 2.24% at 950 million on mercury.

Any population growth modifiers on governors?

[Tarran]

Ah yes, I had forgotten about them.

It's .96% at earth and 2.03% at mercury without them. Still doesn't fit the formula Tim posted.

[Thiosk]

Seems kinda strange.  Here we're at 7 billion and folks are just making tons of babies as fast as they can, at least in the developing world.

[Sheb]

Well, current growth rate is about 1,3%.

[Ziusudra]

It was posted in the Mechanics forum, but that was four or five years ago.  It's a simple logarithmic scale from a max of 10% (under a million) down to 2% (more than ten million, or is it more than 25 million?)

Based on my 5 colonies, I'd say the 10% is less than 10 million and the 2% is at 1 billion. Two colonies at 10% are 2.13m and 7.18m, no bonuses. Earth with 1033.53m would be 1.97% without the governor bonus. No sector bonuses.

[Rastaman]

The fastest population growth is achieved when you equalize the population over all colonies. Right?

[Thiosk]

Well, current growth rate is about 1,3%.

Interesting!  I had to look up the value, and it sure is. 1.3% is still a lot of babies

[Sheb]

Yup, and it is a bit higher than what you get on Aurora for a many billions world. I guess Steve is an idealist, and think that TN tech will dramatically raise people's standard of living, especially in the develloping world, meaning they make less babies.

[Steve Walmsley]

As long as lack of infrastructure is not an issue, the population growth percentage seems to be solely a function of current population.  Does anybody know what it is exactly?

Colony Growth Rate = 20 / (CurrentPop ^ (1 / 3))

This is capped at 10% before modifications for planetary and sector governors. It is also affected by radiation.

Steve

[Steve Walmsley]

The growth rate of Earth's population has been declining since peaking in 1963 at 2.20% per annum. In 2009, the estimated annual growth rate was 1.1%

Steve

[Father Tim]

Colony Growth Rate = 20 / (CurrentPop ^ (1 / 3))

This is capped at 10% before modifications for planetary and sector governors. It is also affected by radiation.

Steve

That's current pop in millions, right?

[Shadow]

Probably. After all, planetary population is always represented in millions.