Clastres (French pronunciation:) is a commune in the Aisne department in Hauts-de-France in northern France.
Population
| Year | Pop. | ±% p.a. |
|---|---|---|
| 1968 | 529 | — |
| 1975 | 447 | −2.38% |
| 1982 | 534 | +2.57% |
| 1990 | 559 | +0.57% |
| 1999 | 509 | −1.04% |
| 2007 | 543 | +0.81% |
| 2012 | 624 | +2.82% |
| 2017 | 635 | +0.35% |
| 2023 | 589 | −1.25% |
| Source: INSEE | ||
