According to 2011 census, Sirkali had a population of 34,927 with a sex-ratio of 1,028 females for every 1,000 males, much above the national average of 929. A total of 3,367 were under the age of six, constituting 1,740 males and 1,627 females. Scheduled Castes and Scheduled Tribes accounted for 23.21% and 0.13% of the population respectively. The average literacy of the town was 81.5%, compared to the national average of 72.99%. The town had a total of : 8756 households. There were a total of 11,476 workers, comprising 352 cultivators, 1,398 main agricultural labourers, 150 in house hold industries, 7,681 other workers, 1,895 marginal workers, 88 marginal cultivators, 809 marginal agricultural labourers, 77 marginal workers in household industries and 921 other marginal workers.