
Monmouth
- County:
- Fresno County
- County Seat:
- No
- Area (mi²):
- 0.308
- State:
- California
Monmouth is a CDP located in Fresno County, California. Monmouth has a 2025 population of 214. Monmouth is currently growing at a rate of 1.9% annually and its population has increased by 89.38% since the most recent census, which recorded a population of 113 in 2020.
The average household income in Monmouth is $45,792 with a poverty rate of 29.76%. The median age in Monmouth is 24.3 years: 15.5 years for males, and 32.3 years for females.