Castor is a city located in Louisiana. With a 2020 population of 236, it is the 274th largest city in Louisiana and the 16146th largest city in the United States. Castor is currently declining at a rate of -0.84% annually and its population has decreased by -8.53% since the most recent census, which recorded a population of 258 in 2010. Castor reached it's highest population of 257 in 2010. Spanning over 1 miles, Castor has a population density of 198 people per square mile.
The average household income in Castor is $37,200 with a poverty rate of 10.24%. The median rental costs in recent years comes to $342 per month, and the median house value is -. The median age in Castor is 27.7 years, 27.5 years for males, and 27.9 years for females. For every 100 females there are 84.4 males.