Mont Belvieu
- County:
- Chambers County
- County Seat:
- No
- Area (mi²):
- 17.791
- State:
- Texas
Mont Belvieu is a city located in Chambers County, Texas. Mont Belvieu has a 2026 population of 10,229. Mont Belvieu is currently growing at a rate of 5.75% annually and its population has increased by 30.06% since the most recent census, which recorded a population of 7,865 in 2020.