Marysville is a city located in Yuba County California. It is also the county seat of Yuba County. With a 2020 population of 12,524, it is the 348th largest city in California and the 2627th largest city in the United States . Marysville is currently growing at a rate of 0.19% annually and its population has increased by 3.74% since the most recent census, which recorded a population of 12,072 in 2010. Marysville reached it's highest population of 12,524 in 2021. Spanning over 4 miles, Marysville has a population density of 3,616 people per square mile.
The average household income in Marysville is $56,614 with a poverty rate of 19.74%. The median rental costs in recent years comes to $933 per month, and the median house value is $207,200. The median age in Marysville is 31.8 years, 31.8 years for males, and 31.8 years for females.