Worldwide, probably a few thousand:
http://en.wikipedia.org/wiki/Asatru#Demographics
The vikings didn't believe in just one God, they believed in many, which is called polytheism. They believed in the Norse gods such as Odin, Thor, Loki, Frey, etc.
Frigg, sometimes anglicized to Frigga, was the wife of the god Odin in Norse Paganism. People of the Asa-religion (Norse mythology) lived in the time of vikings, around 1000 AD. This means the people who worshipped Frigga (and many other gods) were the vikings.
There are many creation myths in Paganism. Refine your question to one particular sect of Paganism for a better answer.
many people think he was very Christian but this is not true, the only religious believe he had was Norse mythology or maybe atheist
Since the old Lithuanian religion before Christianity was paganism so the true Lithuanians used to believe in many nature gods. Example: Fire, Earth, Wind, Thunder, etc... Paganism is still promoted by some people in LT.
Paganism can take many forms, as can other religious belief systems.Some pagans may believe in having orgies others will not.
Only a very small percentage of the worlds population know what the Norse myths are about.
Yes. Paganism is polytheistic, meaning they believe in many deities- Gods and Goddesses alike.
Athiests don't believe in any God, while most of the Pagan religions are Polithiestic, where they believe on many Gods. Therefor there is a big difference between Polithiestic Paganism and Athiesm
Polytheism is a religion where there are many gods for different aspects of human life/intellect/needs or natural phenomena. Some examples are Roman Paganism, Greek Paganism, Hinduism, Asatru (Norse Heathenism) etc. These are 2nd aeon religions started when human civilized in to live in villages, sustaining on farm crops and livestock.
It's all in a matter of opinion. I personally love Norse Mythology because I myself am Norse. It is not a very popular mythology and not many people know about it. Many people don't like it because of it's dark depressiveness and terrible endings. But there are some good stories in it.
In Norse mythology, there are nine worlds in the universe that are connected by Yggdrasil, the world tree. These worlds include Midgard (Earth), Asgard (home of the gods), and Jotunheim (realm of the giants), among others.