Population Demographics
As of 2026 the population of Vallejo is 123,558. The population is expected to shrink to 123,441 by 2031 - a growth rate of -0.02%.
The median age of Vallejo residents is 41.
The diversity index of Vallejo is 88.6, meaning that there is a 89% chance that any two people selected out of 100 residents will be of different race or ethnicity from one another.
