Castle Valley
- County:
- Grand County
- County Seat:
- No
- Area (mi²):
- 8.79
- State:
- Utah
Castle Valley is a town located in Grand County, Utah. Castle Valley has a 2026 population of 367. Castle Valley is currently growing at a rate of 0.27% annually and its population has increased by 5.46% since the most recent census, which recorded a population of 348 in 2020.
The median household income in Castle Valley is $47,167 with a poverty rate of 0%. The median age in Castle Valley is 70.7 years: 69.8 years for males, and 71.5 years for females. For every 100 females there are 125.9 males.