---
entity_id: city:us:geonames:5334799
entity_type: city
name: Castaic
country_code: US
country: United States
slug: castaic
canonical_url: https://immigrationdb.com/cities/us/castaic/
json_url: https://immigrationdb.com/data/cities/us/castaic.json
markdown_url: https://immigrationdb.com/data/cities/us/castaic.md
mcp_uri: immigrationdb://city/us/castaic
snapshot_id: approved-static-d7ed373c115d60d0
generated_at: 2026-09-12
last_verified: 2026-09-11
fact_count: 19
language_location_count: 0
employment_location_count: 0
city_intent_block_count: 0
usefulness_tier: useful
indexable: true
metric_dictionary_url: https://immigrationdb.com/data/metrics.json
license_url: https://immigrationdb.com/about/copyright/
citation_schema: immigrationdb-citation-v1
citation_canonical_url: https://immigrationdb.com/cities/us/castaic/
citation_title: "Castaic, United States: rent, salary, jobs"
citation_author: ImmigrationDB
citation_publisher: ImmigrationDB
citation_snapshot_id: approved-static-d7ed373c115d60d0
citation_version: approved-static-d7ed373c115d60d0
citation_retrieval_date: 2026-09-12
citation_build_date: 2026-09-12
citation_license_url: https://creativecommons.org/licenses/by/4.0/
---

# Castaic

Castaic is a city in the United States, and the figures below are its published values. Castaic numbered 18,479 residents at the end of 2020. At the end of 2024, unemployment in Castaic reached 4.42%. Castaic had a foreign population of 3,611 at the end of 2024.

## Answers

Deterministic answers rendered from this page's published values. The JSON twin carries the machine-readable answer objects.

### How many people live in Castaic?

The published population was 18,479 people in April 2020.

- City-scope resident count. Density, foreign-resident counts and the country-wide figure are separate rows in the table below.
- Value: 18,479 people · Period: April 2020
- Claims: claim-7e3957f83fcc
### Is the air quality good in Castaic?

The annual PM2.5 mean is about 5.8 µg/m³ (2024) — above the WHO 2021 guideline of 5 µg/m³ but within the EU limit of 25 µg/m³.

- Annual mean at the measuring site(s) serving the city; current-day readings differ.
- Value: 5.8 µg/m³ · Period: 2024
- Claims: claim-29b3f45be66f
### What is the typical salary in Castaic?

The median gross salary is about 4,752 EUR/month (ACS 2020-2024 5-year).

- City-scope median, gross, before tax and social contributions.
- Value: 4,752 EUR/month · Period: ACS 2020-2024 5-year
- Claims: claim-25853f2580d8
### What is the unemployment rate in Castaic?

The unemployment rate is about 4.4 % (2024).

- Value: 4.4 % · Period: 2024
- Claims: claim-29fc6f9f8cea
## Mobility

Castaic's nearest airport was BUR, 40 km away and offered 12 direct destinations.

## Population

The city covered 18.8 km² at the end of 2025. At the end of 2024, the population density reached 957 people per km².

## Climate

Annual PM2.5 in the air was 5.8 µg/m³ at the end of 2024. Castaic's monthly mean temperatures were 12.7°C in January and 25.9°C in July.

## Facts

| Metric | metric_id | Value | Scope | Observed | Verified | Freshness | Lane | Source |
| --- | --- | --- | --- | --- | --- | --- | --- | --- |
| Foreign residents | `foreign_population_total` | 3,611 people | city | 2024-12-31 | 2026-08-03 | stale | verified | [1] |
| Population (built-up area) | `g01_population_total` | 17,999 people | city | 2020-12-31 | 2026-08-07 | stale | verified | [2] |
| Population | `population_total` | 18,479 people | city | 2020-12-31 | 2026-08-05 | stale | verified | [3] |
| Median monthly rent | `rent_median_city_eur_month` | 1,527 EUR/month | city | 2024-12-31 | 2026-09-11 | stale | supplemental | [4] |
| Median gross salary | `salary_median_gross_city_eur_month` | 4,752 EUR/month | city | 2024-12-31 | 2026-09-11 | stale | supplemental | [5] |
| Unemployment rate | `unemployment_total_percent` | 4.42 % | city | 2024-12-31 | 2026-08-03 | stale | verified | [1] |
| PM2.5 — annual mean | `air_quality_pm25_annual_ug_m3` | 5.78 µg/m³ | nearest_station | 2024-12-31 | 2026-08-05 | stale | verified | [6] |
| Average daytime high by month | `climate_monthly_high_c` | Jan 17.33 · Feb 18.17 · Mar 21.33 · Apr 23.44 · May 27.11 · Jun 30.78 · Jul 34.56 · Aug 35.44 · Sep 32.72 · Oct 27.28 · Nov 21.83 · Dec 16.89 °C | nearest_station | 1991-12-31 | 2026-08-05 | stale | verified | [7] |
| Average night-time low by month | `climate_monthly_low_c` | Jan 8.11 · Feb 7.06 · Mar 8.39 · Apr 9.28 · May 11.94 · Jun 13.72 · Jul 17.33 · Aug 17.83 · Sep 16.89 · Oct 13.5 · Nov 9.56 · Dec 6.83 °C | nearest_station | 1991-12-31 | 2026-08-05 | stale | verified | [7] |
| Average temperature by month | `climate_monthly_mean_c` | Jan 12.72 · Feb 12.61 · Mar 14.83 · Apr 16.33 · May 19.5 · Jun 22.22 · Jul 25.94 · Aug 26.61 · Sep 24.78 · Oct 20.39 · Nov 15.67 · Dec 11.89 °C | nearest_station | 1991-12-31 | 2026-08-05 | stale | verified | [7] |
| Average precipitation by month | `climate_monthly_precip_mm` | Jan 107.4 · Feb 112 · Mar 73.66 · Apr 21.08 · May 7.62 · Jun 0.508 · Jul 0 · Aug 0 · Sep 2.79 · Oct 13.21 · Nov 20.83 · Dec 66.55 mm | nearest_station | 1991-12-31 | 2026-08-05 | stale | verified | [7] |
| G04 Air Quality Pm25 Max Ug M3 | `g04_air_quality_pm25_max_ug_m3` | 26.3 µg/m³ | nearest_station | 2024-12-31 | 2026-08-07 | stale | verified | [6] |
| G04 Air Quality Pm25 Mean Annual Ug M3 | `g04_air_quality_pm25_mean_annual_ug_m3` | 5.7 µg/m³ | nearest_station | 2024-12-31 | 2026-08-07 | stale | verified | [6] |
| City area | `city_area_km2` | 18.81 km² | city | 2025-12-31 | 2026-08-03 | aging | verified | [8] |
| Foreign-resident share | `foreign_population_share_percent` | 20.06 % | city | 2024-12-31 | 2026-08-03 | stale | verified | [1] |
| Population density | `population_density_per_km2` | 957 people/km² | city | 2024-12-31 | 2026-08-03 | stale | verified | [1] |
| Airport Direct Destinations Count | `airport_direct_destinations_count` | 12 count | city | 2026-08-03 | 2026-08-03 | fresh | verified | [9] |
| Nearest Major Airport Distance Km | `nearest_major_airport_distance_km` | 40 km | city | 2026-08-03 | 2026-08-03 | fresh | verified | [10] |
| Nearest Major Airport Iata | `nearest_major_airport_iata` | BUR | city | 2026-08-03 | 2026-08-03 | fresh | verified | [10] |

Every row keeps the value, unit, geographic scope, observation date, verification date and the numbered source below. A missing metric means the city does not publish it; nothing is imputed.

## Language courses and integration

- [Adult Education and English Language Acquisition (AEFLA)](https://www.ed.gov/adult-programs) — State Language Course · U.S. Department of Education · English · checked 2026-08-10
- [USCIS English and citizenship class finder](https://my.uscis.gov/) — Civic Orientation · U.S. Citizenship and Immigration Services · English · checked 2026-08-10

These are country-level programmes, not proof of a course location in this city.

## Public employment service

- [American Job Centers](https://www.usa.gov/job-help) — Job Search

This is a country-level service, not proof of a physical office in this city.

## Healthcare access

Migrants can receive medical care in Castaic when the country-wide insurance or residence conditions are met. City capacity facts do not determine personal eligibility.

- Public healthcare access for foreign residents: no — [official source](https://www.healthcare.gov/immigrants/)

## Country-wide rules

Visa, benefit, tax and healthcare eligibility rules are published on the [United States country page](https://immigrationdb.com/countries/united-states/).

## Sources

1. Census Reporter (underlying U.S. Census ACS) — Official source — https://api.censusreporter.org/1.0/data/show/latest?table_ids=B05012%2CB23025&geo_ids=16000US0611796%2C16000US0611964%2C16000US0611978%2C16000US0612734%2C16000US0612902%2C16000US0612916%2C16000US0613560%2C16000US0616090%2C16000US0616580%2C16000US0617162
2. U.S. Census Bureau, American Community Survey — Official source — https://api.census.gov/data/2024/acs/acs5?get=NAME%2CB01003_001E%2CB01003_001M&for=place%3A%2A&in=state%3A%2A
3. California Department of Water Resources, Division of Integrated Regional Water Management (BIOS) — Official source — https://services2.arcgis.com/Uq9r85Potqm3MfRV/arcgis/rest/services/biosds3072_fpu/FeatureServer/0/query?where=1%3D1&outFields=GEOID20%2CNAME20%2CNAMELSAD20%2CPop20%2CDAC20&returnGeometry=false&f=json&resultRecordCount=3000
4. Census Reporter ACS 2020-2024 5-year, table B25064 (underlying U.S. Census Bureau ACS) — Community source — https://api.censusreporter.org/1.0/data/show/acs2024_5yr?table_ids=B25064&geo_ids=16000US0611796
5. Census Reporter ACS 2020-2024 5-year, table B20002 (underlying U.S. Census Bureau ACS) — Community source — https://api.censusreporter.org/1.0/data/show/acs2024_5yr?table_ids=B20002&geo_ids=16000US0611796
6. U.S. EPA Air Quality System / AirData — Official source — https://aqs.epa.gov/aqsweb/airdata/annual_conc_by_monitor_2024.zip
7. NOAA National Centers for Environmental Information — Official source — https://www.ncei.noaa.gov/data/normals-monthly/1991-2020/access/USC00046161.csv
8. U.S. Census Bureau (TIGERweb ArcGIS REST service) — Official source — https://tigerweb.geo.census.gov/arcgis/rest/services/TIGERweb/Places_CouSub_ConCity_SubMCD/MapServer/5/query?where=1%3D1&outFields=GEOID,NAME,STATE,PLACE,AREALAND,AREAWATER,INTPTLAT,INTPTLON,LSADC,FUNCSTAT,BASENAME&returnGeometry=false&f=json
9. OpenFlights — Official source — https://raw.githubusercontent.com/jpatokal/openflights/master/data/routes.dat
10. OurAirports — Official source — https://davidmegginson.github.io/ourairports-data/airports.csv

## Cite

This citation identifies the ImmigrationDB compilation/page. Underlying source publishers and datasets retain their own terms; inspect the Sources section and cite those records separately.

### APA

ImmigrationDB. (2026, September 12). Castaic, United States: rent, salary, jobs [ImmigrationDB compilation; snapshot approved-static-d7ed373c115d60d0; version approved-static-d7ed373c115d60d0]. ImmigrationDB. https://immigrationdb.com/cities/us/castaic/ Retrieved 2026-09-12. Compilation license: CC BY 4.0, https://creativecommons.org/licenses/by/4.0/

### BibTeX

```bibtex
@misc{immigrationdb_immigrationdb_castaic-united-states-rent-salary-jobs_33d6618175b6,
  author = {ImmigrationDB},
  title = {Castaic, United States: rent, salary, jobs},
  publisher = {ImmigrationDB},
  year = {2026},
  date = {2026-09-12},
  version = {approved-static-d7ed373c115d60d0},
  snapshot = {approved-static-d7ed373c115d60d0},
  url = {https://immigrationdb.com/cities/us/castaic/},
  note = {Retrieved 2026-09-12. ImmigrationDB compilation. Compilation license: CC BY 4.0, https://creativecommons.org/licenses/by/4.0/},
}
```

### Markdown

[Castaic, United States: rent, salary, jobs](https://immigrationdb.com/cities/us/castaic/) — ImmigrationDB; ImmigrationDB; snapshot approved-static-d7ed373c115d60d0; version approved-static-d7ed373c115d60d0; retrieved 2026-09-12; built 2026-09-12.

- Citation schema: `immigrationdb-citation-v1`
- Canonical URL: https://immigrationdb.com/cities/us/castaic/
- Title: Castaic, United States: rent, salary, jobs
- Author: ImmigrationDB
- Publisher: ImmigrationDB
- Snapshot: `approved-static-d7ed373c115d60d0`
- Version: `approved-static-d7ed373c115d60d0`
- Retrieved: 2026-09-12
- Built: 2026-09-12
- Compilation license: CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/)

## Data

- HTML: https://immigrationdb.com/cities/us/castaic/
- JSON: https://immigrationdb.com/data/cities/us/castaic.json
- Markdown: https://immigrationdb.com/data/cities/us/castaic.md
- MCP resource: immigrationdb://city/us/castaic
- Metric dictionary: https://immigrationdb.com/data/metrics.json
- City shard index: https://immigrationdb.com/data/cities/index.json
- Release catalog: https://immigrationdb.com/data/catalog.json