According to 2011 census, Manapparai had a population of 40,510 with a sex-ratio of 1,012 females for every 1,000 males, much above the national average of 929. A total of 4,090 were under the age of six, constituting 2,096 males and 1,994 females. Scheduled Castes and Scheduled Tribes accounted for 11.97% and .18% of the population respectively. The average literacy of the town was 78.98%, compared to the national average of 72.99%. The town had a total of : 9934 households. There were a total of 14,930 workers, comprising 455 cultivators, 749 main agricultural labourers, 582 in house hold industries, 11,518 other workers, 1,626 marginal workers, 29 marginal cultivators, 470 marginal agricultural labourers, 51 marginal workers in household industries and 1,076 other marginal workers.
Manapparai has three main roads, Tiruchi Road and Dindigul Road (NH45),Thuvarankurichi Road (SH71), which leads to Madurai and the southern hinterland connecting major destinations of Tamil Nadu and Third road is Musiri to Pudukotai road. About 300 pass through the municipal bus stand, which is a ‘C’–Class and constructed in 1981, provides frequent service to the cities are Trichy, Dindigul, Madurai, Palani, Cumbum, Kumuli and scheduled services were available to Salem, Chennai, Vellore and Erode. Manapparai railway station serves the town, as it connects to major cities of Tamil Nadu like Chennai, Madurai, Dindigul, Trichy as well as trains to Kanyakumari, Guruvayur also passing through this railway station.