Oldest ZIP codes in Santa Clarita, CA
These are the 7 ZIP codes in Santa Clarita, CA with the highest median age, out of 7 with at least 1,000 residents. 91390 (Santa Clarita, 46.7), 91355 (Valencia, 43.3) and 91354 (Valencia, 40.0) lead the list. There is no single "best" ZIP code in Santa Clarita; the right one depends on who you want to reach, so the same ZIP codes are ranked several ways below.
Oldest ZIP codes in Santa Clarita
| Rank | ZIP | Mailing city | Median age | Residents | Households | Residential mailboxes |
|---|---|---|---|---|---|---|
| 1 | 91390 | Santa Clarita | 46.7 ±3.2 | 19,308 | 6,414 | 6,571 |
| 2 | 91355 | Valencia | 43.3 ±1.6 | 29,123 | 11,781 | 12,989 |
| 3 | 91354 | Valencia | 40.0 ±1.2 | 33,957 | 11,149 | 11,987 |
| 4 | 91351 | Canyon Country | 39.3 ±1.6 | 33,155 | 10,502 | 10,838 |
| 5 | 91350 | Santa Clarita | 38.2 ±1.0 | 43,973 | 13,778 | 14,697 |
| 6 | 91321 | Newhall | 36.5 ±2.5 | 31,989 | 10,863 | 11,508 |
| 7 | 91387 | Canyon Country | 35.2 ±1.2 | 46,869 | 14,343 | 15,683 |
How we ranked them
Ranked by median age of all residents, highest first (ACS 5-year estimates, 2020–2024). ZIP codes need at least 1,000 residents to be ranked; 7 of 7 qualify.
Which of these to mail, and why
Older ZIP codes respond to health care, hearing and vision, Medicare plans, home safety, estate planning and services that come to the door.
The top five ZIP codes on this list hold 53,624 households, on 92 carrier routes with 57,082 residential mailboxes. Open any of them on the route map to see each carrier route's own figures before you choose.
Open 91390 on the EDDM route map
More rankings
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- ZIP codes with the highest homeownership in Santa Clarita
- ZIP codes with the most families with kids in Santa Clarita
- ZIP codes with the most new movers in Santa Clarita
- Youngest ZIP codes in Santa Clarita
- Fastest-growing ZIP codes in Santa Clarita
- Oldest ZIP codes in Los Angeles County
- All Santa Clarita ZIP codes
Businesses that mail these ZIP codes
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Frequently asked questions
- Which ZIP code in Santa Clarita has the highest median age?
- 91390 (Santa Clarita), at 46.7 (±3.2), among 7 ZIP codes with at least 1,000 residents.
- How is this ranking calculated?
- Ranked by median age of all residents, highest 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.