Padron:Worldpop

7939736300

 {{ #expr: {{worldpop-base}} + {{worldpop-daily-inc}} * {{Age in days|2012|7|1}} round -2 }}

Automatically updates ONCE per day at 00:00 UTC (possibly offset during daylight savings)
Formatted to nearest 100 to reduce likelihood of display in scientific notation, and also to avoid false precision

Regarding rounding baguhin

if rounded to nearest 100-thousand, will often display in scientific notation
if round ends in 5 zeroes, there is an intermittent sci notation problem
This CAN happen even if the number is rounded to 0 places - IF the number ends in 5 zeroes
results are inconsistent, seemingly dependent on which server renders the numbers

Places rounded to	result	"textified"	with commas
none	7,939,736,343.125
0	7,939,736,343
1	7,939,736,340	7939736340	7,939,736,340
2	7,939,736,300	7939736300	7,939,736,300
3	7,939,736,000	7939736000	7,939,736,000
4	7,939,740,000	7939740000	7,939,740,000
5	7,939,700,000	7939700000	7,939,700,000	at 211,203.375 more per day, this value will change daily
6	7,940,000,000	7940000000	7,940,000,000
7	7,940,000,000	7940000000	7,940,000,000
8	7,900,000,000	7900000000	7,900,000,000
9	8,000,000,000	8000000000	8,000,000,000

date	population estimate	change	# days	#/day
2012-07-01	7,023,324,899
2012-08-01	7,029,872,203	6,547,304	31	211,203.355
2012-09-01	7,036,419,508	6,547,305	31	211,203.387
2012-10-01	7,042,755,609	6,336,101	30	211,203.367
2012-11-01	7,049,302,914	6,547,305	31	211,203.387
2012-12-01	7,055,639,015	6,336,101	30	211,203.367
2013-01-01	7,062,186,320	6,547,305	31	211,203.387
2013-02-01	7,068,733,624	6,547,304	31	211,203.355
2013-03-01	7,074,647,319	5,913,695	28	211,203.393
2013-04-01	7,081,194,623	6,547,304	31	211,203.355
2013-05-01	7,087,530,725	6,336,102	30	211,203.400
2013-06-01	7,094,078,029	6,547,304	31	211,203.355
2013-07-01	7,100,414,131	6,336,102	30	211,203.400
YEAR		77,089,232	365	211,203.375

Source: http://www.census.gov/population/popclockworld.html
- 7,023,324,899 is the US Census estimate for 2012-07-01 (2012 July)
- 211,203.375 per day is both the average for the year & the nearly-equivalent daily value within every month
- Above figures are sometimes changed by that site - even retroactively. At last check, that site was last revised 2012-MAY-21.

According to http://www.census.gov/population/international/data/idb/worldvitalevents.php, each day in 2012 an average 366,281 babies are born, and 151,723 people die, for a net gain per day of 214,558 (a bit more than above figure of 211,203.375).
At http://www.census.gov/population/international/data/idb/worldpoptotal.php are mid-year figures for every year from 1950-2050.