13.5% of the population for whom poverty status is determined in Plymouth, IN (1.39k out of 10.3k people) live below the poverty line, a number that is higher than the national average of 12.5%. The largest demographic living in poverty are Males 25 - 34, followed by Males < 5 and then Females 35 - 44.

The most common racial or ethnic group living below the poverty line in Plymouth, IN is White, followed by Hispanic and Other.

The Census Bureau uses a set of money income thresholds that vary by family size and composition to determine who classifies as impoverished. If a family's total income is less than the family's threshold than that family and every individual in it is considered to be living in poverty.