Sabzevar Colony was a Lyran Star Empire colony belonging to the Iron Fang County, known to host one of the facilities manufacturing iCarpets.
Brianna Reiss piloted a cutter to the colony in order to supply Elephantine Carpet in iCarpets. (RIS Bouteina: "My Carpet, Tis of Thee")
Mandy Guilmain was born and raised on Sabzevar Colony, alongside her sisters, Cindy and Sandy. Kinda Sorta College (and later university) was the largest college on the colony in late 23rd century. Also, a year in the Sabzevar Colony lasts 347 days, each of which lasts 23 hours. (Star Trek: The Stoneship Files: "Educational Armageddon")
The population of the colony grew from 2.3 million (as of My Carpet, Tis of Thee) in 2385, when Mandy matriculated at KSC, to 5 million in 2402, as per Educational Armageddon.