Here are the top ten major hospitals in Montgomery County, Texas:

1. Memorial Hermann Hospital - This facility is part of the Memorial Hermann Health System and offers comprehensive medical services.

2. Woodlands Memorial Hospital - Located in The Woodlands, it provides a wide range of healthcare services, including emergency care and surgical services.

3. Conroe Regional Medical Center - A key healthcare provider in Conroe, offering various services, including emergency medicine, surgery, and rehabilitation.

4. Texas Children's Hospital The Woodlands - A pediatric healthcare facility providing specialized care for children.

5. CHI St. Luke's Health - The Woodlands Hospital - This hospital provides a complete array of medical services and is part of the CHI St. Luke's Health network.

6. Note: Some onsite facilities might belong to private practices or outpatient clinics, but they usually do not rank as major hospitals.

7. Bayshore Medical Center - Though it is somewhat beyond Montgomery County, it serves residents in the area as part of the larger Houston medical community.

8. HCA Houston Healthcare Conroe - This is an HCA facility providing various medical services, including emergency care.

9. Lyndon B. Johnson General Hospital - Located slightly further out, it serves some individuals in Montgomery County and has a strong focus on community health.

10. Other Specialized Clinics and Urgent Care Centers - While not classified as major hospitals, many specialized facilities provide necessary services.

Please check local resources or websites for more accurate and up-to-date information about each hospital’s services and rankings, as hospitals can change in prominence and offerings over time.