Aliso Viejo is a city located in California. With a 2020 population of 50,249, it is the 179th largest city in California and the 785th largest city in the United States. Aliso Viejo is currently declining at a rate of -0.63% annually but its population has increased by 5.07% since the most recent census, which recorded a population of 47,823 in 2010. Aliso Viejo reached it's highest population of 51,206 in 2018. Spanning over 7 miles, Aliso Viejo has a population density of 7,262 people per square mile.
The average household income in Aliso Viejo is $135,824 with a poverty rate of 4.70%. The median rental costs in recent years comes to $2,258 per month, and the median house value is $632,900. The median age in Aliso Viejo is 37.8 years, 36.9 years for males, and 38.4 years for females. For every 100 females there are 91.5 males.