Killian is a city located in Louisiana. With a 2020 population of 1,255, it is the 151st largest city in Louisiana and the 9394th largest city in the United States. Killian is currently declining at a rate of -1.80% annually but its population has increased by 4.06% since the most recent census, which recorded a population of 1,206 in 2010. Killian reached it's highest population of 1,312 in 2016. Spanning over 11 miles, Killian has a population density of 115 people per square mile.
The average household income in Killian is $84,205 with a poverty rate of 8.00%. The median rental costs in recent years comes to $1,379 per month, and the median house value is $171,700. The median age in Killian is 46.5 years, 52.2 years for males, and 44.1 years for females. For every 100 females there are 90.4 males.