Frederiksted is both a town and one of the two administrative districts of St. Croix, U.S. Virgin Islands. It is a grid-planned city, designed by surveyor Jens Beckfor, originally to 14x14 blocks but built 7x7 to enhance the island commerce in the 1700s. Fewer than 1,000 people live in Frederiksted proper, but nearly 10,000 live on the greater western side of the island. Christiansted is about 30 years older, but commerce was limited by its natural, shallow protective reef.