10.4% of the population for whom poverty status is determined in Fullerton Joint Union High School District, CA (26.6k out of 256k 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 18 - 24, followed by Females 25 - 34 and then Females 35 - 44.

The most common racial or ethnic group living below the poverty line in Fullerton Joint Union High School District, CA is Hispanic, followed by White 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.