Are the Florida Keys Closer to the Equator Than the Dominican Republic?

Yes.

• Florida Keys (Key West): ~24.55° N
• Dominican Republic (Santo Domingo): ~18.48° N

The Keys are ~6° (≈415 miles / 670 km) farther from the equator than the DR. Wait—higher latitude = farther from equator. So the Dominican Republic is closer to the equator.

Correction: The source answer was reversed. The Dominican Republic is closer to the equator.