About This Place
Nilwood is an incorporated town in Macoupin County, Illinois, United States. The population was 284 at the 2000 census.
Nilwood is located at 39°23′50″N 89°48′28″W / 39.39722°N 89.80778°W / 39.39722; -89.80778 (39.397248, -89.807691).
According to the United States Census Bureau, the town has a total area of 0.5 square miles (1.2 km²), all of it land.