Population Demographics
As of 2025 the population of Grimes is 565. The population is expected to grow to 573 by 2030 - a growth rate of 0.28%.
The median age of Grimes residents is 37.
The diversity index of Grimes is 68.3, meaning that there is a 68% chance that any two people selected out of 100 residents will be of different race or ethnicity from one another.