Seaside is a city located in California. With a 2020 population of 33,680, it is the 226th largest city in California and the 1170th largest city in the United States. Seaside is currently declining at a rate of -0.10% annually but its population has increased by 1.98% since the most recent census, which recorded a population of 33,025 in 2010. Seaside reached it's highest population of 38,901 in 1990. Spanning over 9 miles, Seaside has a population density of 3,645 people per square mile.
The average household income in Seaside is $79,599 with a poverty rate of 13.38%. The median rental costs in recent years comes to $1,781 per month, and the median house value is $488,400. The median age in Seaside is 32.8 years, 31.2 years for males, and 33.8 years for females. For every 100 females there are 102.7 males.