City ZIP codes · California
Santa Monica, CA ZIP Codes
11 ZIP codes use the postal name Santa Monica, California (Census 2020 ZCTAs and GeoNames postal codes, October 2026): 5 residential and 6 for PO boxes or a single organization. Median household income runs from $95,139 in 90404 to $121,925 in 90403, 1.3 times as much (Census Bureau, ACS 2020-2024). Santa Monica's most populous ZIP code is 90405, with 27,298 people (ACS 2020-2024); 100% of its land is in the city of Santa Monica.
- ACS2020-24
- Census2020
- GeoNames2026
Where are Santa Monica's ZIP codes?
Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries; ACS 2020-2024 5-year estimates (B19013).
How different are Santa Monica's ZIP codes?
The highest median household income is in 90403 ($121,925), the lowest in 90404 ($95,139). Home values run from $1,149,200 in 90401 to $2,000,000 or more in 90402.
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B19013, B25077, B01003).
All 5 residential ZIP codes of Santa Monica
| County | |||||
|---|---|---|---|---|---|
| 90405 | Los Angeles County | 27,298 | 9,816 | $121k | $1.93M |
| 90403 | Los Angeles County | 23,867 | 16,903 | $122k | $1.55M |
| 90404 | Los Angeles County | 22,978 | 11,658 | $95k | $1.24M |
| 90402 | Los Angeles County | 11,337 | 5,552 | $159k | $2M+ |
| 90401 | Los Angeles County | 8,101 | 10,730 | $110k | $1.15M |
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates; 2023 Gazetteer land areas (2020 ZCTAs); town names from simplemaps US ZIP Codes (CC BY 4.0) and GeoNames (CC BY 4.0).
PO Box and single-organization ZIP codes in Santa Monica
6 ZIP codes named Santa Monica have no residential delivery area: post office boxes, or one organization (a large employer, an agency, a university) with its own code. The Census Bureau publishes no figures for them.
| ZIP | County |
|---|---|
| 90406 | Los Angeles County |
| 90407 | Los Angeles County |
| 90408 | Los Angeles County |
| 90409 | Los Angeles County |
| 90410 | Los Angeles County |
| 90411 | Los Angeles County |
Source: GeoNames postal codes (CC BY 4.0); a ZIP code with no Census ZCTA has no residential delivery area.
Which counties do Santa Monica's ZIP codes reach?
Santa Monica's residential ZIP codes lie in Los Angeles County.
Which places do Santa Monica's ZIP codes cover?
A postal name is not a city limit. By the Census Bureau's places, Santa Monica's residential ZIP codes cover Santa Monica itself and 1 other place, each listed with the ZIP codes that have at least 5% of their land in it or hold most of the place:
- Los Angeles 90402
Source: U.S. Census Bureau, 2020 ZCTA-to-place relationship file (shares of land).
Which first three digits do Santa Monica's ZIP codes use?
The first three digits of a ZIP code name the sectional center, the mail processing plant that sorts it. Every ZIP code of Santa Monica starts with 904.
| Prefix | Sectional center | Here | All codes |
|---|---|---|---|
| 904 | Los Angeles, CA (SCF 900) | 11 | 11 |
All 11 ZIP codes that start with 904 are Santa Monica's: 5 residential codes and 6 PO Box or unique codes, sorted at Los Angeles, CA (SCF 900).
Source: U.S. Postal Service, labeling list L005 (3-digit ZIP Code prefix groups, SCF sortation), effective October 1, 2026.