Population Demographics
As of 2026 the population of Antioch is 120,841. The population is expected to grow to 122,163 by 2031 - a growth rate of 0.22%.
The median age of Antioch residents is 38.
The diversity index of Antioch is 89.5, meaning that there is a 90% chance that any two people selected out of 100 residents will be of different race or ethnicity from one another.
