Castaic, CA ZIP Codes
One ZIP code serves Castaic, California: 91384. Together they are home to 26,478 residents in 7,124 households. That is more than the 17,999 people counted inside Castaic Census-designated place, because these ZIP codes reach past its boundary.
Castaic Census-designated place
| Measure | Census figure |
|---|---|
| Residents | 17,999 |
| Households | 5,797 |
| Median household income | $129,863 |
| Median home value | $792,000 |
| Median age | 37.9 |
| Median rent | $1,770 |
All 1 ZIP codes together
| Measure | Value |
|---|---|
| Residents (sum of ZIP codes) | 26,478 |
| Households (sum of ZIP codes) | 7,124 |
| Median household income, range across ZIP codes | $131,689 (91384) to $131,689 (91384) |
| Household-weighted average of ZIP medians (an approximation, not a true median) | $131,689 |
| Homeowners | 84.1% |
| Households with kids under 18 | 40.4% |
| Moved in the past year | 12.7% |
| Carrier routes in EDDM2GO's route library | 12 routes, 7,375 homes (1 of 1 ZIP codes) |
Every ZIP code in Castaic
| ZIP | Mailing city | Residents | Households | Median income | Home value | Homeowners | With kids | New movers | Carrier routes | Mailboxes | Why listed |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 91384 | Castaic | 26,478 | 7,124 | $131,689 | $767,300 | 84.1% | 40.4% | 12.7% | 12 | 7,657 | 7% of its land; mailing city |
A ZIP code is listed for Castaic when at least 10% of its land lies inside the Castaic Census-designated place, when it holds at least 10% of the place's land, or when its USPS mailing city is Castaic. The table shows which applies. Totals add up whole ZIP codes, so they include any parts outside Castaic.
Counties
- Los Angeles County — 298 ZIP codes
Price a mailing to Castaic ZIP codes
EDDM guides
Pick carrier routes on the EDDM route map
Frequently asked questions
- What ZIP codes are in Castaic, CA?
- 91384. A ZIP code is listed for Castaic when at least 10% of its land lies inside the Castaic Census-designated place, when it holds at least 10% of the place's land, or when its USPS mailing city is Castaic.
- What is the population of Castaic, CA?
- The Census Bureau counts 17,999 residents inside Castaic Census-designated place (ACS 2020–2024). The 1 ZIP code that serve Castaic hold 26,478 residents in all.
- What is the median household income in Castaic, CA?
- $129,863 inside Castaic Census-designated place, per the Census Bureau. Across its ZIP codes the medians run from $131,689 to $131,689.
- How many carrier routes and mailboxes are in Castaic, CA?
- For the 1 of 1 ZIP codes in EDDM2GO's stored route library: 12 carrier routes reaching 7,375 residential and 282 business mailboxes.
This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.