5.58% of the population for whom poverty status is determined in Herculaneum, MO (269 out of 4.83k people) live below the poverty line, a number that is lower than the national average of 12.5%. The largest demographic living in poverty are Females 25 - 34, followed by Females 55 - 64 and then Males 12 - 14.

The most common racial or ethnic group living below the poverty line in Herculaneum, MO is White, followed by Two Or More and Black.

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.