Youngest ZIP codes in Santa Monica, CA
These are the 5 ZIP codes in Santa Monica, CA with the lowest median age, out of 5 with at least 1,000 residents. 90401 (Santa Monica, 36.9), 90404 (Santa Monica, 40.5) and 90405 (Santa Monica, 43.1) lead the list. There is no single "best" ZIP code in Santa Monica; the right one depends on who you want to reach, so the same ZIP codes are ranked several ways below.
Youngest ZIP codes in Santa Monica
| Rank | ZIP | Mailing city | Median age | Residents | Households | Residential mailboxes |
|---|---|---|---|---|---|---|
| 1 | 90401 | Santa Monica | 36.9 ±2.6 | 8,101 | 5,256 | 6,729 |
| 2 | 90404 | Santa Monica | 40.5 ±1.8 | 22,978 | 10,714 | 11,495 |
| 3 | 90405 | Santa Monica | 43.1 ±2.6 | 27,298 | 14,312 | 15,435 |
| 4 | 90403 | Santa Monica | 44.2 ±1.8 | 23,867 | 13,165 | 14,876 |
| 5 | 90402 | Santa Monica | 52.7 ±2.6 | 11,337 | 5,016 | 5,611 |
How we ranked them
Ranked by median age of all residents, lowest first (ACS 5-year estimates, 2020–2024). ZIP codes need at least 1,000 residents to be ranked; 5 of 5 qualify.
Which of these to mail, and why
Younger ZIP codes skew toward renters, students and young families: fitness, quick-service food, apartments, entertainment and first-time-buyer offers.
The top five ZIP codes on this list hold 48,463 households, on 94 carrier routes with 54,146 residential mailboxes. Open any of them on the route map to see each carrier route's own figures before you choose.
Open 90401 on the EDDM route map
More rankings
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- ZIP codes with the highest home values in Santa Monica
- ZIP codes with the highest homeownership in Santa Monica
- ZIP codes with the most families with kids in Santa Monica
- ZIP codes with the most new movers in Santa Monica
- Oldest ZIP codes in Santa Monica
- Fastest-growing ZIP codes in Santa Monica
- Youngest ZIP codes in Los Angeles County
- All Santa Monica ZIP codes
Businesses that mail these ZIP codes
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EDDM guides
Frequently asked questions
- Which ZIP code in Santa Monica has the lowest median age?
- 90401 (Santa Monica), at 36.9 (±2.6), among 5 ZIP codes with at least 1,000 residents.
- How is this ranking calculated?
- Ranked by median age of all residents, lowest first (ACS 5-year estimates, 2020–2024).
- Why are some ZIP codes missing?
- ZIP codes with fewer than 1,000 residents are left out because their survey estimates swing too much to rank, and so are ZIP codes where the Census Bureau did not publish this figure.
This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.