The location of hell is specifically stated in the Bible. However, hell is a supernatural place so you cannot locate it with a GPS receiver or a physical map. Several scriptures insinuate that hell is beneath/down/below. This means that hell is beneath the earth. So wherever you are on the globe, you can know that hell is below where you are because it is below the earth. 

Scriptures About Hell’s Location

Hell from beneath is moved for thee to meet thee at thy coming: it stirreth up the dead for thee, even all the chief ones of the earth; it hath raised up from their thrones all the kings of the nations. Isaiah 14:9

The way of life is above to the wise, that he may depart from hell beneath. Prov. 15:24

Though they dig into hell, thence shall mine hand take them; though they climb up to heaven, thence will I bring them down. Amos 9:12

Let death seize upon them, and let them go down quick into hell: for wickedness is in their dwellings, and among them. Psalm 55:15 

Yet thou shalt be brought down to hell, to the sides of the pit. Isaiah 14:15

I made the nations to shake at the sound of his fall when I cast him down to hell with them that descend into the pit: and all the trees of Eden, the choice and best of Lebanon, all that drink water, shall be comforted in the nether parts of the earth. They also went down into hell with him unto them that be slain with the sword; and they that were his arm, that dwelt under his shadow in the midst of the heathen. Ezekiel 31:16-17

And thou, Capernaum, which art exalted unto heaven, shalt be brought down to hell: for if the mighty works, which have been done in thee, had been done in Sodom, it would have remained until this day. Mathew 11:23

For if God spared not the angels that sinned, but cast them down to hell  and delivered them into chains of darkness, to be reserved unto judgment. 2 Peter 2:4

It is no coincidence that all the scriptures above all agree on the fact that hell is down. This is enough proof that the location of hell is down. It is down because it is below heaven but we can also infer from the same scriptures that it is below the earth. 

Hell In the Old Testament

In the Old Testament, hell is referred to as sheol. The Old Testament scriptures insinuate that everyone, whether righteous or unrighteous, went to Sheol after death (Ecclesiastes 9:10). This is because the souls of the departed were believed to be taken to Sheol where they awaited the resurrection (1 Samuel 2:6). Jesus however clarified that Sheol was divided into two. The righteous people would go to a section called Paradise while the unrighteous went to the section of Sheol where they would be tormented. The righteous couldn’t go directly into heaven because Jesus hadn’t died for them yet (Luke 16:19-31). 

Hell In the New Testament

• Hades – hades is the Greek equivalent to Sheol. It is worth noting that by the time the New Testament was written, Sheol was not constituted as it was before. Scripture says that the graves were opened and the righteous men rose. This is because Jesu had paid the ultimate price and they no longer needed to be hades. Paradise is now in heaven (2 Cor. 12:2-4). As a consequence, the New Testament only uses the word hades in reference to a place of torment for the unrighteous. 
• Tartarus – Tartarus is used in three places in the Bible namely,  1 Pet 3:19, 2 Peter 2:4, and Jude 6. This refers to the place where the fallen angels undergo torment. There are two types of fallen angels – those that have already been bound in Tartarus and those that are roaming around Earth awaiting the final judgment. 
• Abyss – Abyss is a Greek word that is translated in English to mean “bottomless pit.” Abyss may be a synonym for Tartarus because it refers to the the place where demons are/will be tormented. 
• Gehenna – Gehenna is the place where all the unbelievers will suffer eternal punishment. Just like Hades, Gehenna is a place of fire and torment. However, Gehenna is currently empty awaiting the final judgment. 

The Design Specifications of Hell

There are a couple of scriptures that give us a picture of how hell has been designed. Let us take a close look at these scriptures. 

• Hell has several layers (we have described the layers in the previous section)

For a fire is kindled in mine anger, and shall burn unto the lowest hell, and shall consume the earth with her increase, and set on fire the foundations of the Mountains. Deuteronomy 32:22

For great is thy mercy toward me: and thou hast delivered my soul from the lowest hell. Psalms 86:13

•  The dimensions of hell can enlarge

Therefore hell hath enlarged herself, and opened her mouth without measure: and their glory, and their multitude, and their pomp, and he that rejoiceth shall descend into it. Isaiah 5:14

Yea also, because he transgresseth by wine, he is a proud man, neither keepeth at home, who enlargeth his desire as hell, and is as death, and cannot be satisfied, but gathereth unto him all nations, and heapeth unto him all people. Habakkuk 2:5

• Hell has gates

And I say also unto thee, That thou art Peter, and upon this rock I will build my church; and the gates of hell shall not prevail against it. Mathew 16:18

Conclusion

To sum it up, the Bible provides enough evidence that the location of hell is down. Even though it is not clear what down/beneath means, we can infer that it means below heaven as well as below the earth. This explains why the Bible says that the devil was cast down into hell with the rest of the fallen angels.