
Newcastle
- County:
- Young County
- County Seat:
- No
- Area (mi²):
- 1.79
- State:
- Texas
Newcastle is a city located in Young County, Texas. Newcastle has a 2025 population of 540. Newcastle is currently growing at a rate of 0.56% annually and its population has increased by 2.47% since the most recent census, which recorded a population of 527 in 2020.
The average household income in Newcastle is $78,627 with a poverty rate of 12.21%. The median age in Newcastle is 37.3 years: 37.9 years for males, and 34.7 years for females.