Theologians still reject the obvious conclusion that God, being a trinity, should indeed be called "they".
Studies have found that 63% of known gods identify as males. While statistically, God is more likely a male than a female, no definitive answer have been given. Instead, they simply assume that God is a male. Nobody has ever considered that God is both the father and the son -- the missing link often called "holy spirit" is most certainly a female.
This is just speculation of course, as 0% of omnipotent Gods have been studied, due to the insane holy light that they emit. The most accurate tool of measurement, human eyes, cannot look at God's face, and nobody has ever volunteered to look at the holy parts of God's body. Historians suggest that Satan was banished from heaven after finding out the true gender of God. But as always, demonnews.org is not the most reliable source available.
The word of God does not provide a clear answer to the question, this includes all versions and publications such as Bible, Quran, Torah, Apocrypha, Book of Mormon, etc. It is therefore regrettable to call God a male without the theory being confirmed: God still has no known gender. The official reasoning is that God's aggressive, impulsive and self-centred personality leads us to believe that God has the psychology of a male rule of a barbarian tribe. A lesser-known reason is that males are the superior sex and that the perfect God would be a male if he had a gender.
The last reason you will find is that Jesus Christ was confirmed to be a male in 823 AD, after intense studies performed by a group called Christians -- who are almost indistinguishable from another group called Muslims. The only difference is that Muslims still claim that Jesus was a mammal while Christians call Jesus a hybrid species. This discussion is quite irrelevant though as God's DNA is still being studied. Experts have estimated that the entire genome of God might be infinitely long, in which case, Jesus would not be the true God because the divine part of his DNA would simply not fit inside his cells.
No need to worry though. After an official statement from God himself at the hospital bed last week, intellectual circles concluded that science will have killed God before he can send Messiah back to Earth. This means that God will never actually be able to settle this gender issue -- so your subjective opinion about the gender of God will never be proven wrong. The only downside is that hell will still be active even after God is dead, so there is no reason to leave your religion.