Sentinel is a city located in Oklahoma. With a 2020 population of 804, it is the 250th largest city in Oklahoma and the 11262nd largest city in the United States. Sentinel is currently declining at a rate of -3.37% annually and its population has decreased by -10.77% since the most recent census, which recorded a population of 901 in 2010. Sentinel reached it's highest population of 909 in 2013. Spanning over 1 miles, Sentinel has a population density of 1,306 people per square mile.
The average household income in Sentinel is $58,846 with a poverty rate of 15.04%. The median rental costs in recent years comes to $536 per month, and the median house value is $57,400. The median age in Sentinel is 36.9 years, 34.2 years for males, and 39.9 years for females. For every 100 females there are 89.1 males.