United States antipodes
Shown here is the opposite side of the globe projected on the Indian Ocean. The white land to the left is Madagascar; the right is Australia. It can be seen that if you dig a hole straight down from almost anywhere in the United States, you'll reach the floor of the Indian Ocean. Except for two islands, which are mostly uninhabited.
Ile Amsterdam is opposite an area southeast of Lamar, Colorado. Interestingly, there is a huge wind turbine farm along U.S. 287 near this spot The smaller island Ile Saint-Paul is opposite a spot near Firstview, Colorado (near Kit Carson).
Kerguelen Island sits opposite of northern Montana. The town of Rudyard would have to be the only community in the United States that sits on top of a non-oceanic antipode.