Demographics
| Historical population | ||
|---|---|---|
| Year | Pop. | ±% |
| 1901 | 35,890 | — |
| 1911 | 42,586 | +18.7% |
| 1921 | 49,282 | +15.7% |
| 1931 | 55,978 | +13.6% |
| 1941 | 62,674 | +12.0% |
| 1951 | 69,370 | +10.7% |
| 1961 | 74,965 | +8.1% |
| 1981 | 80,560 | +7.5% |
| 1991 | 86,155 | +6.9% |
| 2001 | 93,148 | +8.1% |
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As of 2001 India census, Nagapattinam had a population of 93,148. The sex ratio of the town is 1018 with 46,155 males and 46,993 females. There are a total of 19,062 households. The total children under the age of 6 is 11,611. A total of 7,475 people constituting 8% of the total population belong to Scheduled Castes (SC)and 700 people constituting 0.7% of the population belong to Scheduled tribes (ST). The town has 68,310 literates, making the literacy rate of the town to 83.78%. There are a total of 27,952 workers, comprising 254 cultivators, 437 agricultural labourers, 558 in house hold industries, 25,595 other workers, 1,108 marginal workers, 12 marginal cultivators, 197 marginal agricultural labourers, 89 in marginal workers in household industries, 810 other marginal workers. The decadal growth rate was higher in decade ending 1981 due to increase in the town limits from 8.7 km2 (3.4 sq mi) to 14.95 km2 (5.77 sq mi). The overall growth rate has declined over the period due to migration of people to other urban centres. There are 40 slums in the town as of 2001, with an estimated 44% residing in these slums. Out of 40 slums, 14 were affected by the 2004 tsunami and with the help of different grant schemes and tsunami assistance programmes, these were rebuilt to tsunami proof houses.
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