DXCC Political Entities criteria 1c states: “The Entity contains a permanent population, is administered by a local government, and is located at least 800 km from its parent. To satisfy the "permanent population" and "administered by a local government" criteria of this sub-section, an Entity must be listed on either (a) the U.S. Department of State's list of "Dependencies and Areas of Special Sovereignty" as having a local "Administrative Center," or (b) the United Nations list of "Non-Self-Governing Territories." St. Bart’s clearly meets that criteria and should be added to the DXCC list as a new counter.
Here is the info you will want to input into your logging software.
Prefix – FJ
Country Name – Saint Barthelemy
CQ Zone – 8
Start date – Probably February 22, 2007
QSL Bureau – Yes (REF France)
UTC Offset – 4 hours behind UTC
IOTA – NA-146
ITU Zone – 11
Continent – North America
Longitude – 62.83 West
Latitude – 17.92 North
Other islands that will count for Saint Barthelemy – Chevreau, Coco, Fourchue, Fregate, La Tortue, Le Boulanger, Pain de Sucre, Pele and Toc Vers.