Just stumbled across this wee gem of an article from Reuters regarding a poll that they have just conducted over a group of 23,000 people in 22 countries.
It appears that over this polling group 20% believe that Aliens exist and live amongst as disguised as humans.

Does make you think how many aliens are they talking about, and am I considered one by others?????

Click on the READ MORE link to read the article

SINGAPORE (Reuters) - Aliens exist and they live in our midst disguised as humans -- at least, that's what 20 percent of people polled in a global survey believe.

The Reuters Ipsos poll of 23,000 adults in 22 countries showed that more than 40 percent of people from India and China believe that aliens walk among us disguised as humans, while those least likely to believe in this are from Belgium, Sweden and the Netherlands (8 percent each).

However, the majority of people polled, or 80 percent, don't believe aliens in our midst.

"It would appear that that there's a modest correlation between the most populated countries and those more likely to indicate there may be aliens disguised amongst them compared with those countries with the smaller populations," said John Wright, Senior Vice President of market research firm Ipsos.

"Maybe the it's a simple case that in a less populated country you are more likely to know your next door neighbor better," he said.

More men than women -- 22 percent vs 17 percent -- believe that alien beings are on earth.

Most of those believers are under the age of 35, and across all income classes, the survey showed. Of those who do not believe, most are women.