If you google that question most of what you get are explanations of why God allows so much suffering and proofs of God’s existence. For locations you get only: “everywhere” or in a “different dimension” or “hidden” or “inside you”; I have not found anything more specific. This is unfortunate because knowing where God is could reveal much about what God is. We can learn where he is by examining how he got there, a subject about which we do have some knowledge.
Our species has a powerful need to find reasons, to know how and why. Many conditions and events have no obvious explanation and are attributed, by some people, to unseen, mysterious powers. In antiquity, before the dawn of science, such happenings were very pervasive. To explain them various spirits with magical abilities were imagined. These spirits were mostly capricious, fearful and demanding. Often icon surrogates of them were made. Rituals, aided by the placebo effect, were invented to influence, cajole or placate them.
As societies became larger and more complex spirits morphed into gods; rituals morphed into worship and religions were born. Usually one god was imagined to be more powerful and was more venerated or feared than the others. For the Abramic religions -- Judaism, Christianity and Islam -- the supreme god became God. The remaining gods were eventually abolished, to be replaced, in Christianity and Islam, by angels.
The important takeaway is this: all of these spirits, gods, God and angels are not existent entities; they live only in human minds; they are mere figments of imagination, which, unlike reality, is unconstrained.
In this context it is worth noting that throughout “A History of God” (Random House, 1993)* -- the excellent seminal book by Karen Armstrong, who is not an atheist -- gods and God, as well as spirits, are treated as concepts not as actual beings.
These days, even though almost all of what once bewildered our ancestors is now explained or at least explainable, most people still believe there is a God of some kind. However, when they are questioned for details, one finds a plethora of God characteristics and versions, from the creator-supervisor of the universe and everything in it (who is demanding, loving, caring and trustworthy or demanding, jealous, vengeful and capricious or both); to a mere initiator of the universe; to an unknowable supernatural “something”. In short, God is whatever its believers-cum-creators concoct.
So, God, gods, angels, etc exist in human minds, no where else, especially not in any genes. They, and deeds attributed to them, are imagination supported by (usually willful) ignorance, nothing more.
* You can find a free PDF file by googling “a history of god pdf”
First, who's said that the Tooth Fairy and the Easter Bunny aren't deities?
Secondly, I think that most Lovecraftians would disagree with you belittling Cthulu's godlike and amazing powers. When He Who Shall Not Be Named rises and sucks your soul dry, you'll look back on your post and know you were wrong.
Besides, Jeebus and his pet chicken the Holy Ghostie aren't that particular with whom they play Texas Hold-Em. They're not that great of players, but they don't care, they're playing with Mormon's souls for chips, so they're not really that interested if they lose.
I expect that some of us might just let our ex's do this with little fan-fair...