Castaic, CA · standard
ZIP Code 91384
Los Angeles County, California - Census ACS demographics, housing tenure, and business patterns, benchmarked against every US ZIP.
- 29,855
- 106/sq mi Moderate-density area
- $131,689
- Median income Above-median income area
- $767,300
- Median home value Above-median home value
- 32.3%
- Bachelor's or higher Above-average bachelor's attainment
National ZIP placement
Castaic pairs a top-decile household income with top-decile home values, in a rural, homeowner-dominated area.
- Top 7%
- household income, US ZIPs
- Top 5%
- home value, US ZIPs
- 106
- people per sq mi
- 84%
- owner-occupied homes
Source: U.S. Census Bureau ACS 5-Year Estimates (2019–2023). Percentiles rank ZIP 91384 against every reporting US ZIP.
FHFA HPI release change
What changed in the latest House Price Index year
- FHFA House Price Index values in ZIP 91384 (Castaic, CA) rose +3.8% from 2023 to 2024. The all-transactions index moved from 298.6 in 2023 to 310.0 in 2024 (2000 = 100).
ZIP code 91384 is a densely settled ZIP (a standard USPS delivery area) in Castaic, Los Angeles County, California, with 29,855 residents across 281.4 square miles, a density of 106 people per square mile, in the Los Angeles time zone.
ZIP 91384 skews affluent, with a median household income of $131,689 (30% above the average California ZIP), while per-capita income is $41,792. The poverty rate is 5.7%, with unemployment at 5.3%; those measures add context to the income figure. Median home value is $767,300 (1% below the average California ZIP) and median rent is $1,745; 84.1% of occupied homes are owner-occupied.
A solid share of residents have a four-year degree: 32.3% of adults hold a bachelor's degree or higher, the median age is 35.8, and the average commute is 31 minutes. The page also surfaces 3 ZIP codes within roughly 10 miles and 6 more in Los Angeles County, so 91384 can be compared with both its immediate and county-level context.
Every figure on this page is sourced from the U.S. Census Bureau American Community Survey 5-Year Estimates (including median rent) and the FHFA House Price Index, no estimates, no proprietary scoring. Verify with Census →
Top industries in ZIP 91384
Top 5 sectors by establishment count in Castaic, CA
Which industries have the most business establishments in ZIP 91384.
- Construction
Construction
61 establishments
- Professional, scientific, and technical services
Professional, scientific, and technical services
44 establishments
- Accommodation and food services
Accommodation and food services
41 establishments
- Real estate and rental and leasing
Real estate and rental and leasing
36 establishments
- Retail trade
Retail trade
28 establishments
What this shows Establishment counts come from the Census ZIP Code Business Patterns program, which counts physical business locations rather than employees or revenue.
Source: U.S. Census Bureau, American Community Survey 5-Year Estimates + ZIP Code Business Patterns + FHFA HPI ACS demographics and median rent, ZBP business establishments, FHFA HPI for ZIP 91384, Castaic, CA · 2023 Census ACS 5-Year Estimates use a rolling 60-month sample for stable small-geography estimates; ZBP updated annually; FHFA HPI updated quarterly/annually.
Quick Facts
29,855
Population
281.4
Area (sq mi)
106
People / sq mi
Los Angeles
Time Zone
standard
ZIP Type
Who lives in ZIP 91384?
35.8
Median Age
56.8%
Male
43.2%
Female
19.9%
Foreign-Born
Hispanic or Latino is an ethnicity category from the Census Bureau and may overlap with other categories above.
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
How much do residents earn?
$131,689
Median Household Income
+30% vs state ZIP avg
$41,792
Per Capita Income
5.7%
Poverty Rate
5.3%
Unemployment Rate
31.3 min
Mean Commute Time
How ZIP 91384 ranks among California ZIPs
Castaic, CA household income vs. every California ZIP code
Median household income among 1,583 reporting California ZIPs (this ZIP's population is too small for a reliable national-corpus placement)
$131,689 Top 20% higher than 80% of 1,583 California ZIPs
Each bar is a $20K-wide band; taller bars hold more California ZIPs. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.
Source U.S. Census Bureau, ACS 5-Year Estimates · 2019–2023
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
What is the education profile here?
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
What does housing look like?
Housing stock: occupied vs vacant
7,270housing units
7,270
Total Housing Units
7,124
Occupied Units
146
Vacant Units
3.21
Avg Household Size
Occupancy Type
$767,300
Median Home Value
-1% vs state ZIP avg
$1,745
Median Rent
1991
Median Year Built
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
How have home values changed over time?
FHFA House Price Index, annual appreciation data based on repeat sales and appraisals
+3.8%
YoY Change (2024)
310
HPI Index (2000 = 100)
+210%
Total Change Since 2000
Home values in ZIP 91384 have increased 3.8% over the past year (2024). Since 2000, this ZIP has seen +210% cumulative appreciation.
| Year | Annual Change | HPI Index |
|---|---|---|
| 2020 | +3.5% | 228 |
| 2021 | +14.8% | 262 |
| 2022 | +13.5% | 297 |
| 2023 | +0.6% | 299 |
| 2024 | +3.8% | 310 |
Source: Federal Housing Finance Agency (FHFA) House Price Index, All-Transactions, Five-Digit ZIP Codes (Developmental Index). Index base = 100 in year 2000. Data through 2024. ZIP codes with few transactions may show missing values.
What businesses operate in this ZIP?
Census Bureau data shows 343 business establishments in ZIP 91384, employing approximately 2,170 people with a combined annual payroll of $95,271,000.
343
Businesses
2,170
Employees
$95.3M
Annual Payroll
14
Industry Sectors
| Industry | Establishments | % of Total |
|---|---|---|
| Construction | 61 | 17.8% |
| Professional, scientific, and technical services | 44 | 12.8% |
| Accommodation and food services | 41 | 11.9% |
| Real estate and rental and leasing | 36 | 10.5% |
| Retail trade | 28 | 8.2% |
| Administrative and support and waste management and remediation services | 27 | 7.9% |
| Other services (except public administration) | 27 | 7.9% |
| Transportation and warehousing | 18 | 5.3% |
| Arts, entertainment, and recreation | 18 | 5.3% |
| Health care and social assistance | 17 | 5.0% |
| Wholesale trade | 7 | 2.0% |
| Educational services | 7 | 2.0% |
| Finance and insurance | 5 | 1.5% |
| Information | 4 | 1.2% |
Source: U.S. Census Bureau, ZIP Code Business Patterns (ZBP), 2023. Employment figures may include noise for disclosure avoidance.
Nearby ZIP Codes
Want a side-by-side? Compare 91384 vs 93040 →
ZIP 91384 vs its nearest neighbors, by population
Resident population of this ZIP and the closest reporting ZIP codes within ~10 miles.
- 91355
Valencia (91355)
32,605 residents
- 91384
Castaic (91384)
29,855 residents
- 91354
Valencia (91354)
28,722 residents
- 93040 2,031
Piru (93040)
2,031 residents
What this shows Among its immediate neighbors, ZIP 91384 ranks #2 by population - useful context the national average alone can't give.
ZIP 91384 vs its nearest neighbors, by median income
Median household income of this ZIP and the closest reporting ZIP codes within ~10 miles.
- 91354
Valencia (91354)
$156,173 median income
- 91384
Castaic (91384)
$131,689 median income
- 91355
Valencia (91355)
$115,640 median income
- 93040
Piru (93040)
$94,556 median income
What this shows By household income, ZIP 91384 ranks #2 of 4 neighboring ZIPs, local affluence varies block to block, not just metro to metro.
Nationwide ZIPs with similar ACS profiles
Two Census-derived peer sets for ZIP 91384, both outside CA so the neighborhoods are not geographic containment (Nearby and same-county blocks stay local).
Similar population
Nearest cross-state ZIPs by resident population (29,855 here; floor ≥1,000).
Similar median household income
Nearest cross-state ZIPs by ACS median household income.
More ZIP Codes in Los Angeles County
Related Areas
Frequently Asked Questions
What county is ZIP code 91384 in?
ZIP code 91384 (Castaic) is located in Los Angeles County, California. Los Angeles County contains multiple ZIP codes, see the full list at /counties/los-angeles-ca.
What is the population of ZIP code 91384?
ZIP code 91384 in Castaic, CA has a population of 29,855 according to the Census Bureau ACS 2023 estimates.
What is the median household income in ZIP 91384?
The median household income in ZIP 91384 is $131,689, which is 73% above the national average of $76,288.
What is the average home value in ZIP 91384?
The median home value in ZIP 91384 is $767,300, which is 176% above the national average of $278,155.
What is the demographic makeup of ZIP 91384?
The largest racial group in ZIP 91384 is White at 47.5%. Hispanic or Latino residents make up 43.4% of the population.
How many businesses are in ZIP code 91384?
ZIP code 91384 has 343 business establishments employing approximately 2,170 people, according to Census Bureau ZIP Code Business Patterns (ZBP) 2023 data.
What are the main industries in ZIP code 91384?
The top industries by establishment count in ZIP 91384 are: Construction (61), Professional, scientific, and technical services (44), Accommodation and food services (41). There are 14 industry sectors represented in total.
How have home values changed in ZIP code 91384?
According to the FHFA House Price Index, home values in ZIP 91384 increased by 3.8% in 2024. Since 2000, home values in this ZIP have appreciated by approximately 210%. This is a developmental index based on repeat sales and appraisal data from Fannie Mae and Freddie Mac.
What is the education level in ZIP code 91384?
In ZIP code 91384, 51.8% of residents aged 25+ have a high school diploma or higher, and 32.3% hold a bachelor's degree or higher. These figures come from the Census Bureau ACS 5-Year Estimates (2023).
What is the average commute time in ZIP 91384?
The mean commute time for workers in ZIP code 91384 is 31.3 minutes according to Census ACS data. The national average is roughly 26 minutes, so commuters here spend more time traveling to work than typical.
What percentage of residents own vs. rent in ZIP 91384?
In ZIP code 91384, approximately 84.1% of occupied housing units are owner-occupied and 15.9% are renter-occupied, based on Census ACS 2023 data.
What is the poverty rate in ZIP code 91384?
The poverty rate in ZIP code 91384 is 5.7% according to Census Bureau ACS 2023 estimates. This measures the percentage of the population living below the federal poverty threshold.
Related
Take this with you
What to do with ZIP 91384's numbers, next.
- See how ZIP 91384 compares to a neighboring ZIP code on the same Census fields Compare this ZIP
- Check where Castaic, CA ranks among every U.S. ZIP code on income, education, or homeownership View national rankings
- Save this ZIP to your shortlist to track alongside others you're considering View your shortlist
ZIP Code Tabulation Areas (ZCTAs) are Census Bureau approximations of USPS ZIP codes; figures describe the ZCTA area, not any single address within it.