---
entity_id: city:us:geonames:7261029
entity_type: city
name: Casa de Oro-Mount Helix
country_code: US
country: United States
slug: casa-de-oro-mount-helix
canonical_url: https://immigrationdb.com/cities/us/casa-de-oro-mount-helix/
json_url: https://immigrationdb.com/data/cities/us/casa-de-oro-mount-helix.json
markdown_url: https://immigrationdb.com/data/cities/us/casa-de-oro-mount-helix.md
mcp_uri: immigrationdb://city/us/casa-de-oro-mount-helix
snapshot_id: approved-static-d7ed373c115d60d0
generated_at: 2026-09-12
last_verified: 2026-09-11
fact_count: 23
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/casa-de-oro-mount-helix/
citation_title: "Casa de Oro-Mount Helix, United States: rent"
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/
---

# Casa de Oro-Mount Helix

Casa de Oro-Mount Helix is a city in the United States. Casa de Oro-Mount Helix numbered 19,327 residents at the end of 2020. An unemployment rate of 4.94% was measured at the end of 2024. A foreign population count of 2,018 was recorded 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 Casa de Oro-Mount Helix?

The published population was 19,327 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: 19,327 people · Period: April 2020
- Claims: claim-65fe64af409d
### Is the air quality good in Casa de Oro-Mount Helix?

The annual PM2.5 mean is about 8.7 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: 8.7 µg/m³ · Period: 2024
- Claims: claim-36e9f2cb3cfc
### What is the typical salary in Casa de Oro-Mount Helix?

The median gross salary is about 4,736 EUR/month (ACS 2020-2024 5-year).

- City-scope median, gross, before tax and social contributions.
- Value: 4,736 EUR/month · Period: ACS 2020-2024 5-year
- Claims: claim-0ce8a3de280b
### What is the unemployment rate in Casa de Oro-Mount Helix?

The unemployment rate is about 4.9 % (2024).

- Value: 4.9 % · Period: 2024
- Claims: claim-478200042e04
## Mobility

Casa de Oro-Mount Helix's nearest airport was SAN, 21 km away and offered 55 direct destinations.

## Population

The total area of Casa de Oro-Mount Helix was 17.7 km² at the end of 2025. The population density of Casa de Oro-Mount Helix stood at 1,113.9 people per km² at the end of 2024.

## Climate

Annual PM2.5 was 8.7 µg/m³ at the end of 2024. Casa de Oro-Mount Helix's monthly mean temperatures were 14.6°C in January and 21.5°C in July.

## Facts

| Metric | metric_id | Value | Scope | Observed | Verified | Freshness | Lane | Source |
| --- | --- | --- | --- | --- | --- | --- | --- | --- |
| Foreign residents | `foreign_population_total` | 2,018 people | city | 2024-12-31 | 2026-08-03 | stale | verified | [1] |
| Population (built-up area) | `g01_population_total` | 19,765 people | city | 2020-12-31 | 2026-08-07 | stale | verified | [2] |
| Population | `population_total` | 19,327 people | city | 2020-12-31 | 2026-08-05 | stale | verified | [3] |
| Median monthly rent | `rent_median_city_eur_month` | 1,702 EUR/month | city | 2024-12-31 | 2026-09-11 | stale | supplemental | [4] |
| Median gross salary | `salary_median_gross_city_eur_month` | 4,736 EUR/month | city | 2024-12-31 | 2026-09-11 | stale | supplemental | [5] |
| Unemployment rate | `unemployment_total_percent` | 4.94 % | city | 2024-12-31 | 2026-08-03 | stale | verified | [1] |
| PM2.5 — annual mean | `air_quality_pm25_annual_ug_m3` | 8.74 µg/m³ | nearest_station | 2024-12-31 | 2026-08-05 | stale | verified | [6] |
| Average daytime high by month | `climate_monthly_high_c` | Jan 19.1 · Feb 19 · Mar 19.4 · Apr 20.4 · May 20.9 · Jun 22 · Jul 24 · Aug 25.2 · Sep 25.1 · Oct 23.7 · Nov 21.5 · Dec 18.9 °C | nearest_station | 1991-12-31 | 2026-08-05 | stale | verified | [7] |
| Average night-time low by month | `climate_monthly_low_c` | Jan 10.2 · Feb 11 · Mar 12.5 · Apr 13.9 · May 15.6 · Jun 17 · Jul 18.9 · Aug 19.7 · Sep 19 · Oct 16.4 · Nov 12.7 · Dec 9.9 °C | nearest_station | 1991-12-31 | 2026-08-05 | stale | verified | [8] |
| Average temperature by month | `climate_monthly_mean_c` | Jan 14.6 · Feb 15 · Mar 16 · Apr 17.2 · May 18.2 · Jun 19.5 · Jul 21.5 · Aug 22.5 · Sep 22.1 · Oct 20 · Nov 17.1 · Dec 14.4 °C | nearest_station | 1991-12-31 | 2026-08-05 | stale | verified | [9] |
| Average precipitation by month | `climate_monthly_precip_mm` | Jan 50.3 · Feb 55.9 · Mar 37.2 · Apr 16.5 · May 7 · Jun 1.2 · Jul 2.1 · Aug 0.2 · Sep 3 · Oct 12.7 · Nov 20 · Dec 42.5 mm | nearest_station | 1991-12-31 | 2026-08-05 | stale | verified | [10] |
| G04 Air Quality Pm25 Max Ug M3 | `g04_air_quality_pm25_max_ug_m3` | 24.5 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` | 8.74 µg/m³ | nearest_station | 2024-12-31 | 2026-08-07 | stale | verified | [6] |
| G11 Annual Precipitation Mm | `g11_annual_precipitation_mm` | 248.6 mm | nearest_station | 1991-12-31 | 2026-08-07 | stale | verified | [10] |
| G11 Max Temp C Jul | `g11_max_temp_c_jul` | 24 °C | nearest_station | 1991-12-31 | 2026-08-07 | stale | verified | [7] |
| Average annual temperature | `g11_mean_annual_temp_c` | 18.2 °C | nearest_station | 1991-12-31 | 2026-08-07 | stale | verified | [9] |
| G11 Min Temp C Jan | `g11_min_temp_c_jan` | 10.2 °C | nearest_station | 1991-12-31 | 2026-08-07 | stale | verified | [8] |
| City area | `city_area_km2` | 17.74 km² | city | 2025-12-31 | 2026-08-03 | aging | verified | [11] |
| Foreign-resident share | `foreign_population_share_percent` | 10.21 % | city | 2024-12-31 | 2026-08-03 | stale | verified | [1] |
| Population density | `population_density_per_km2` | 1,114 people/km² | city | 2024-12-31 | 2026-08-03 | stale | verified | [1] |
| Airport Direct Destinations Count | `airport_direct_destinations_count` | 55 count | city | 2026-08-03 | 2026-08-03 | fresh | verified | [12] |
| Nearest Major Airport Distance Km | `nearest_major_airport_distance_km` | 21 km | city | 2026-08-03 | 2026-08-03 | fresh | verified | [13] |
| Nearest Major Airport Iata | `nearest_major_airport_iata` | SAN | city | 2026-08-03 | 2026-08-03 | fresh | verified | [13] |

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 Casa de Oro-Mount Helix 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=16000US0607064%2C16000US0607414%2C16000US0607624%2C16000US0607848%2C16000US0609892%2C16000US0610074%2C16000US0610256%2C16000US0610561%2C16000US0611390%2C16000US0611691
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=16000US0611691
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=16000US0611691
6. U.S. EPA Air Quality System / AirData — Official source — https://aqs.epa.gov/aqsweb/airdata/annual_conc_by_monitor_2024.zip
7. World Meteorological Organization / NOAA NCEI — Official source — https://www.nodc.noaa.gov/archive/arc0216/0253808/1.1/data/0-data/data-composite-primary-parameters/wmo_normals_9120_TMAX.csv
8. World Meteorological Organization / NOAA NCEI — Official source — https://www.nodc.noaa.gov/archive/arc0216/0253808/1.1/data/0-data/data-composite-primary-parameters/wmo_normals_9120_TMIN.csv
9. World Meteorological Organization / NOAA NCEI — Official source — https://www.nodc.noaa.gov/archive/arc0216/0253808/1.1/data/0-data/data-composite-primary-parameters/wmo_normals_9120_TAVG.csv
10. World Meteorological Organization / NOAA NCEI — Official source — https://www.nodc.noaa.gov/archive/arc0216/0253808/1.1/data/0-data/data-composite-primary-parameters/wmo_normals_9120_PRCP.csv
11. 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
12. OpenFlights — Official source — https://raw.githubusercontent.com/jpatokal/openflights/master/data/routes.dat
13. 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). Casa de Oro-Mount Helix, United States: rent [ImmigrationDB compilation; snapshot approved-static-d7ed373c115d60d0; version approved-static-d7ed373c115d60d0]. ImmigrationDB. https://immigrationdb.com/cities/us/casa-de-oro-mount-helix/ Retrieved 2026-09-12. Compilation license: CC BY 4.0, https://creativecommons.org/licenses/by/4.0/

### BibTeX

```bibtex
@misc{immigrationdb_immigrationdb_casa-de-oro-mount-helix-united-states-rent_d6e617d16a14,
  author = {ImmigrationDB},
  title = {Casa de Oro-Mount Helix, United States: rent},
  publisher = {ImmigrationDB},
  year = {2026},
  date = {2026-09-12},
  version = {approved-static-d7ed373c115d60d0},
  snapshot = {approved-static-d7ed373c115d60d0},
  url = {https://immigrationdb.com/cities/us/casa-de-oro-mount-helix/},
  note = {Retrieved 2026-09-12. ImmigrationDB compilation. Compilation license: CC BY 4.0, https://creativecommons.org/licenses/by/4.0/},
}
```

### Markdown

[Casa de Oro-Mount Helix, United States: rent](https://immigrationdb.com/cities/us/casa-de-oro-mount-helix/) — 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/casa-de-oro-mount-helix/
- Title: Casa de Oro-Mount Helix, United States: rent
- 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/casa-de-oro-mount-helix/
- JSON: https://immigrationdb.com/data/cities/us/casa-de-oro-mount-helix.json
- Markdown: https://immigrationdb.com/data/cities/us/casa-de-oro-mount-helix.md
- MCP resource: immigrationdb://city/us/casa-de-oro-mount-helix
- 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