Amesti is a census-designated place (CDP) in Santa Cruz County, California, United States. The population was 2,637 as of the 2020 United States census.
Amesti is named for José Amesti, a Basque who came to California in 1822, and who was the grantee of Rancho Los Corralitos.
Amesti is located at (36.959210, -121.782131).
According to the United States Census Bureau, the CDP has a total area of , of which, of it is land and of it (2.13%) is water.
Amesti first appeared as a census designated place in the 2000 U.S. census.
The 2020 United States census reported that Amesti had a population of 2,637. The population density was . The racial makeup of Amesti was 42.2% White, 0.3% African American, 1.4% Native American, 1.7% Asian, 0.1% Pacific Islander, 36.7% from other races, and 17.5% from two or more races. Hispanic or Latino of any race were 59.3% of the population.
The census reported that 99.1% of the population lived in households and 0.9% lived in non-institutionalized group quarters.
There were 806 households, out of which 40.7% included children under the age of 18, 55.5% were married-couple households, 6.2% were cohabiting couple households, 25.8% had a female householder with no partner present, and 12.5% had a male householder with no partner present. 15.5% of households were one person, and 7.8% were one person aged 65 or older. The average household size was 3.24. There were 634 families (78.7% of all households).
The age distribution was 23.1% under the age of 18, 9.9% aged 18 to 24, 25.7% aged 25 to 44, 24.4% aged 45 to 64, and 16.9% who were 65years of age or older. The median age was 37.6years. For every 100 females, there were 101.8 males.
There were 824 housing units at an average density of , of which 806 (97.8%) were occupied. Of these, 71.6% were owner-occupied, and 28.4% were occupied by renters.
In 2023, the US Census Bureau estimated that the median household income was $102,083, and the per capita income was $41,683. About 9.6% of families and 14.1% of the population were below the poverty line.
In the California State Legislature, Amesti is in , and in .
In the United States House of Representatives, Amesti is in .