Avalon is a very small coastal city (i.e. on the ocean, a bay, or inlet) located in the state of California. With a population of 3,261 people and two associated neighborhoods, Avalon is the 585th largest community in California. Avalon has a large stock of pre-World War II architecture, making it one of the older and more historic cities in the country.

Housing costs in Avalon are among some of the highest in the nation, although real estate prices here don't compare to real estate prices in the most expensive communities in California.

Avalon is also nautical, which means that parts of it are somewhat historic and touch the ocean or tidal bodies of water, such as inlets and bays. Quite often, nautical areas such as these attract visitors and locals who come to enjoy the scenery and various waterfront activities.

One of the benefits of Avalon is that there is very little traffic. The average commute to work is 11.71 minutes, which is substantially less than the national average. Not only does this mean that the drive to work is less aggravating, but noise and pollution levels are lower as a result.

The percentage of adults in Avalon with college degrees is slightly lower than the national average of 21.84% for all communities. 16.77% of adults in Avalon have a bachelor's degree or advanced degree.

The per capita income in Avalon in 2022 was $37,155, which is middle income relative to California, and upper middle income relative to the rest of the US. This equates to an annual income of $148,620 for a family of four. However, Avalon contains both very wealthy and poor people as well.

Avalon is an extremely ethnically-diverse city. The people who call Avalon home describe themselves as belonging to a variety of racial and ethnic groups. People of Hispanic or Latino origin are the most prevalent group in Avalon, accounting for 65.40% of the city’s residents (people of Hispanic or Latino origin can be of any race). The greatest number of Avalon residents report their race to be White, followed by Black or African-American. Important ancestries of people in Avalon include Irish, German, Polish, English, and Estonian.

Avalon also has a high percentage of its population that was born in another country: 27.84%.

The most common language spoken in Avalon is Spanish. Other important languages spoken here include English and French.