The Colonies are areas of North America that have been contaminated by pollution and radioactive waste. The Republic of Gilead often sends those convicted of various crimes, known as Unpeople, to the Colonies, to help clear them up as punishment. The prisoners there wear gray clothing. The Colonies are known to have horrific living conditions, with prisoners or Unpeople sent there being used as slave labor. Those sent to the Colonies often die quickly from sickness brought on by the pollution and poor living conditions, and from malnutrition and over-exertion, with most dying after three years. Being sent to the Colonies is regarded by many as a fate worse than death, and the mere mention of them can instill great dread in the characters.
Notably, after being shown a video of the Colonies, the once-rebellious and outspoken Moira chose to become a prostitute at Jezebel's rather than be sent to the Colonies. Some women who were convicted of serious crimes, such as being an intellectual, or a gender traitor, but were still fertile, willingly chose to become Handmaids over being sent to the Colonies. It is mentioned that Handmaids that fail to conceive are eventually declared Unwomen and sent off to the Colonies, leading many Handmaids to take risky measures in an effort to get pregnant and be spared such a fate. It is also noted by Moira that a small populace of male homosexuals exist in the Colonies, and that a dress code is enforced in which all laborers are made to wear grey dresses. She theorizes that this is done for the purpose of humiliation.
It is mentioned in the Epilogue that while most are sent to the horrific areas, if one were lucky, they could be sent to do less hazardous tasks, such as picking cotton or fruit harvesting. It is unsure if this is actually true in the TV series.