
Allendale
- County:
- Ottawa County
- County Seat:
- No
- Area (mi²):
- 23.235
- State:
- Michigan
Allendale is a CDP located in Ottawa County, Michigan. Allendale has a 2025 population of 27,113. Allendale is currently growing at a rate of 2.4% annually and its population has increased by 14.42% since the most recent census, which recorded a population of 23,696 in 2020.
The average household income in Allendale is $83,951 with a poverty rate of 30.61%. The median age in Allendale is 21.4 years: 21.7 years for males, and 21.2 years for females.