Population Demographics
As of 2026 the population of Grimes is 608. The population is expected to grow to 627 by 2031 - a growth rate of 0.62%.
The median age of Grimes residents is 40.
The diversity index of Grimes is 65.4, meaning that there is a 65% chance that any two people selected out of 100 residents will be of different race or ethnicity from one another.