Nachamps is a commune in the canton of Courçon of the Charente-Maritime department in the Poitou-Charentes region in western France.
| Year | Population | Change | Density | Percent of the canton |
|---|---|---|---|---|
| 1962 | 171 | - | - | - |
| 1968 | 180 | - | - | - |
| 1975 | 172 | - | - | - |
| 1982 | 201 | - | - | - |
| 1990 | 190 | - | - | - |
| 1999 | 211 | - | 50/km² | 6.8% |