Walnut Creek is a city located in California. With a 2020 population of 70,569, it is the 126th largest city in California and the 526th largest city in the United States. Walnut Creek is currently growing at a rate of 0.53% annually and its population has increased by 9.97% since the most recent census, which recorded a population of 64,173 in 2010. Spanning over 20 miles, Walnut Creek has a population density of 3,572 people per square mile.
The average household income in Walnut Creek is $132,660 with a poverty rate of 6.19%. The median rental costs in recent years comes to $1,939 per month, and the median house value is $758,500. The median age in Walnut Creek is 48.4 years, 45.4 years for males, and 51 years for females. For every 100 females there are 86.8 males.