91901 Frequently Asked Questions

A: ZIP Code 91901 is Located in Alpine California. Portions of 91901 are also in Descanso, Harbison Canyon.

A: ZIP Code 91901 is Located Entirely in San Diego County California.

A: The Current Sales Tax in ZIP Code 91901 is 7.8%

A: The Area Codes for 91901 are 619 and 858

A: ZIP Code 91901 is in the California 48th Congressional District.

A: ZIP Code 91901 is in California State Assembly District 71.

A: 91901 is within California State Senate District 38 and California State Senate District 40.

A: The 2022 population of ZIP Code 91901 is 18669. The population growth rate in 91901 is 0.00%.

A: The majority race/ethnicity of people residing in 91901 is White (79.21%). The majority race/ethnicity of students attending public schools in 91901 is White(58.42%).

A: The median household income in 91901 is $105,679 (2021) and the average adjusted income is $100,050 (2020).