St. Kitts and Nevis is located in the Caribbean Sea, about one-third of the way from Puerto Rico to Trinidad and Tobago. It covers an area of 269 square kilometers (104 square miles).
St Kitts is larger than Nevis and is roughly oval shaped except for a narrow, long peninsula to the southeast.
Nevis is surrounded by coral reefs and is almost a single mountain with a height of 3,232 feet.
Charlestown is the largest town in Nevis. Charlestown is the capital of the island of Nevis, in the Federation of St. Kitts and
Nevis, Leeward Islands, West Indies. Charlestown is situated on the leeward side of the island of Nevis, near the southern end of Pinneys Beach.
St. Kitts and Nevis was once known as the Gibraltar of the West Indies. Its volcanic vantage point offering lines of sight to nearby Nevis, St. Eustatius, and Saba.
The full name of St Kitts and Nevis is Federation of St. Christopher and Nevis
The average life expectancy of its population is 68 years for men and 71 years for women.
Mount Liamuiga, at 1,156 meters, is the highest point in the region. Mount Liamuiga gets its name from the original name of the island of St. Kitts. It means “fertile island.”
Both the islands are volcanic with a warm, wet climate and sandy beaches.
The above basic information was quoted from: http://factsking.com/countries/saint-kitts-and-nevis/