Chinnamanur has grown at a rate of 7.64 % during past two decades. While the overall development patterns concentrated in the central area, the areas along the northern side.
The growth pattern of the town is illustrated in the table below:
Population Growth
| Year | Population |
| 1921 | 11812 |
| 1931 | 13262 |
| 1941 | 14480 |
| 1951 | 18914 |
| 1961 | 20586 |
| 1971 | 26678 |
| 1981 | 30797 |
| 1991 | 35397 |
| 2001 | 38360 |