Kailua is a city located in Honolulu County, Hawaii. Kailua has a 2020 population of 36,662. Kailua is currently declining at a rate of 0.00% annually and its population has decreased by -5.11% since the most recent census, which recorded a population of 38,635 in 2010. Kailua reached it's highest population of 39,803 in 2013.
The average household income in Kailua is $142,323 with a poverty rate of 5.22%. The median rental costs in recent years comes to $2,447 per month, and the median house value is $938,200. The median age in Kailua is 42.3 years, 40.4 years for males, and 44.2 years for females. For every 100 females there are 97.4 males.