Population Demographics
As of 2025 the population of Opp is 6,658. The population is expected to shrink to 6,602 by 2030 - a growth rate of -0.17%.
The median age of Opp residents is 44.
The diversity index of Opp is 42.3, meaning that there is a 42% chance that any two people selected out of 100 residents will be of different race or ethnicity from one another.