This is pretty much impossible to answer accurately.
Not everyone will admit to being lesbian (or gay), even if they are. Or they may not acknowledge, even to themselves, that they are. And even those who are and admit it may not say so in a survey because they don't think it's anyone else's business. In some places, this number would be larger where social pressure was minimal, and much much smaller where social pressure was massive. In other words, people in a very strict social area would be very reluctant to answer truthfully and your numbers would be highly skewed. But even in more progressive places, there will still be a huge number of people unwilling to admit to being gay or lesbian so you will never get a real answer.
But we can get a rough guestimate if we go by the generally accepted 5 - 7% figure for percentage of gays. So if we presume there are 6 billion people on the planet (give or take a few million) and that about 50% are female, and of that 5% are lesbian, we get a very rough number of ~150 million.
But this is just a guess; we don't even know how accurate the 5 - 7% expectation really is, for all of the above reasons. Some people claim it's 15%, others say it's not even 1%, depending a great deal on their political agenda.
Everywhere! Lesbians are everyday, normal people and they live everywhere normal people live.
There is no possible way to tell who is lesbian without proof or verbal confession
Approximately 337,500,000 women are lesbians.
There are approximately 666,666,666.
7
not enough
about 1.5% to 3% of the population are lesbian.
Okay. women have certain needs that a man simply can not satisfy. plus women are more curious then men so many women are lesbian because sometimes women know what women want better then men do.
Lesbians are already women.
You can't; the definition of a lesbian is a women who is into women exclusively. You might be able to find a bisexual but a lesbian never would.
Wouldn't that technically defeat the purpose of being a lesbian?
Not a good idea to generalise like this.
No. You are a lesbian only if you are sexually attracted to other women.
You can tell if you are a lesbian if you are attracted exclusively to other women.
The difference is that Lesbian Women only are attracted to females and Bisexual Women are attracted to both females and males.
No they are not.
No, this is absurd. Many gay men and women have children.
matter of communication, its all relative