Aromas is a census-designated place (CDP) in Monterey County, and San Benito County, California, United States. The CDP straddles the border of the two counties, with Monterey County to the west and San Benito County to the east. The population was 2,797 at the 2000 census and was almost equally distributed between the two counties at 1,427 in Monterey County and 1,370 in San Benito County. Aromas is the only CDP in California that is divided between two or more counties. 
As of the censusGR2 of 2000, there were 2,797 people, 889 households, and 731 families residing in the CDP. The population density was 227.4/km² (589.2/mi²). There were 915 housing units at an average density of 74.4/km² (192.7/mi²). The racial makeup of the CDP was 79.23% White, 0.18% Black or African American, 1.32% Native American, 2.61% Asian, 0.07% Pacific Islander, 11.01% from other races, and 5.58% from two or more races. 22.92% of the population were Hispanic or Latino of any race.
There were 889 households out of which 45.0% had children under the age of 18 living with them, 68.6% were married couples living together, 7.9% had a female householder with no husband present, and 17.7% were non-families. 11.8% of all households were made up of individuals and 4.4% had someone living alone who was 65 years of age or older. The average household size was 3.15 and the average family size was 3.42.
In the CDP the population was spread out with 30.3% under the age of 18, 6.5% from 18 to 24, 29.1% from 25 to 44, 26.5% from 45 to 64, and 7.7% who were 65 years of age or older. The median age was 37 years. For every 100 females there were 100.6 males. For every 100 females age 18 and over, there were 98.2 males.
The median income for a household in the CDP was $69,145, and the median income for a family was $70,000. Males had a median income of $51,771 versus $41,875 for females. The per capita income for the CDP was $25,220. About 5.7% of families and 6.2% of the population were below the poverty line, including 7.2% of those under age 18 and 10.2% of those age 65 or over.
Aromas is a growing town.