--- entity_id: city:us:geonames:5334928 entity_type: city name: Castro Valley country_code: US country: United States slug: castro-valley canonical_url: https://immigrationdb.com/cities/us/castro-valley/ json_url: https://immigrationdb.com/data/cities/us/castro-valley.json markdown_url: https://immigrationdb.com/data/cities/us/castro-valley.md mcp_uri: immigrationdb://city/us/castro-valley snapshot_id: approved-static-c751ebb1b4085a62 generated_at: 2026-09-14 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/castro-valley/ citation_title: "Castro Valley, United States: rent, salary, jobs, climate" citation_author: ImmigrationDB citation_publisher: ImmigrationDB citation_snapshot_id: approved-static-c751ebb1b4085a62 citation_version: approved-static-c751ebb1b4085a62 citation_retrieval_date: 2026-09-14 citation_build_date: 2026-09-14 citation_license_url: https://creativecommons.org/licenses/by/4.0/ --- # Castro Valley Castro Valley is one of the cities recorded in the United States. Its population was 64,392 at the end of 2020. At the end of 2024, unemployment in Castro Valley reached 3.82%. The foreign population count was 20,148 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 Castro Valley? The published population was 64,392 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: 64,392 people · Period: April 2020 - Claims: claim-4a94e1980a09 ### Is the air quality good in Castro Valley? The annual PM2.5 mean is about 6.2 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: 6.2 µg/m³ · Period: 2024 - Claims: claim-7c895c341394 ### What is the typical salary in Castro Valley? The median gross salary is about 5,186 EUR/month (ACS 2020-2024 5-year). - City-scope median, gross, before tax and social contributions. - Value: 5,186 EUR/month · Period: ACS 2020-2024 5-year - Claims: claim-6bf0be204b30 ### What is the unemployment rate in Castro Valley? The unemployment rate is about 3.8 % (2024). - Value: 3.8 % · Period: 2024 - Claims: claim-0ae8b3e739d6 ## Mobility Castro Valley's nearest airport was OAK, 12 km away and offered 34 direct destinations. ## Population The total area of Castro Valley was 43.6 km² at the end of 2025. Population density was 1,489.6 people per km² at the end of 2024. ## Climate Annual PM2.5 in the air was 6.2 µg/m³ at the end of 2024. Castro Valley's monthly mean temperatures were 10.6°C in January and 18.9°C in July. ## Facts | Metric | metric_id | Value | Scope | Observed | Verified | Freshness | Lane | Source | | --- | --- | --- | --- | --- | --- | --- | --- | --- | | Foreign residents | `foreign_population_total` | 20,148 people | city | 2024-12-31 | 2026-08-03 | stale | verified | [1] | | Population (built-up area) | `g01_population_total` | 65,001 people | city | 2020-12-31 | 2026-08-07 | stale | verified | [2] | | Population | `population_total` | 64,392 people | city | 2020-12-31 | 2026-08-05 | stale | verified | [3] | | Median monthly rent | `rent_median_city_eur_month` | 2,203 EUR/month | city | 2024-12-31 | 2026-09-11 | stale | supplemental | [4] | | Median gross salary | `salary_median_gross_city_eur_month` | 5,186 EUR/month | city | 2024-12-31 | 2026-09-11 | stale | supplemental | [5] | | Unemployment rate | `unemployment_total_percent` | 3.82 % | city | 2024-12-31 | 2026-08-03 | stale | verified | [1] | | PM2.5 — annual mean | `air_quality_pm25_annual_ug_m3` | 6.18 µg/m³ | nearest_station | 2024-12-31 | 2026-08-05 | stale | verified | [6] | | Average daytime high by month | `climate_monthly_high_c` | Jan 15.2 · Feb 16.6 · Mar 18 · Apr 19.3 · May 20.7 · Jun 23.4 · Jul 23.7 · Aug 24.6 · Sep 25 · Oct 23.1 · Nov 18.4 · Dec 15.2 °C | nearest_station | 1991-12-31 | 2026-08-05 | stale | verified | [7] | | Average night-time low by month | `climate_monthly_low_c` | Jan 6.1 · Feb 7.3 · Mar 8.5 · Apr 9.7 · May 11.4 · Jun 12.8 · Jul 14.1 · Aug 14.6 · Sep 14.2 · Oct 12 · Nov 8.5 · Dec 6.1 °C | nearest_station | 1991-12-31 | 2026-08-05 | stale | verified | [8] | | Average temperature by month | `climate_monthly_mean_c` | Jan 10.6 · Feb 11.9 · Mar 13.3 · Apr 14.5 · May 16 · Jun 18.1 · Jul 18.9 · Aug 19.6 · Sep 19.6 · Oct 17.5 · Nov 13.4 · Dec 10.7 °C | nearest_station | 1991-12-31 | 2026-08-05 | stale | verified | [9] | | Average precipitation by month | `climate_monthly_precip_mm` | Jan 73.8 · Feb 78.9 · Mar 59.7 · Apr 30.4 · May 14.6 · Jun 3.9 · Jul 0 · Aug 2.7 · Sep 2.1 · Oct 20.7 · Nov 38.3 · Dec 81.4 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` | 34.5 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` | 6.15 µg/m³ | nearest_station | 2024-12-31 | 2026-08-07 | stale | verified | [6] | | G11 Annual Precipitation Mm | `g11_annual_precipitation_mm` | 406.5 mm | nearest_station | 1991-12-31 | 2026-08-07 | stale | verified | [10] | | G11 Max Temp C Jul | `g11_max_temp_c_jul` | 23.7 °C | nearest_station | 1991-12-31 | 2026-08-07 | stale | verified | [7] | | Average annual temperature | `g11_mean_annual_temp_c` | 15.3 °C | nearest_station | 1991-12-31 | 2026-08-07 | stale | verified | [9] | | G11 Min Temp C Jan | `g11_min_temp_c_jan` | 6.1 °C | nearest_station | 1991-12-31 | 2026-08-07 | stale | verified | [8] | | City area | `city_area_km2` | 43.64 km² | city | 2025-12-31 | 2026-08-03 | aging | verified | [11] | | Foreign-resident share | `foreign_population_share_percent` | 31 % | city | 2024-12-31 | 2026-08-03 | stale | verified | [1] | | Population density | `population_density_per_km2` | 1,490 people/km² | city | 2024-12-31 | 2026-08-03 | stale | verified | [1] | | Airport Direct Destinations Count | `airport_direct_destinations_count` | 34 count | city | 2026-08-03 | 2026-08-03 | fresh | verified | [12] | | Nearest Major Airport Distance Km | `nearest_major_airport_distance_km` | 12 km | city | 2026-08-03 | 2026-08-03 | fresh | verified | [13] | | Nearest Major Airport Iata | `nearest_major_airport_iata` | OAK | 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 Castro Valley 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=16000US0611964 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=16000US0611964 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 14). Castro Valley, United States: rent, salary, jobs, climate [ImmigrationDB compilation; snapshot approved-static-c751ebb1b4085a62; version approved-static-c751ebb1b4085a62]. ImmigrationDB. https://immigrationdb.com/cities/us/castro-valley/ Retrieved 2026-09-14. Compilation license: CC BY 4.0, https://creativecommons.org/licenses/by/4.0/ ### BibTeX ```bibtex @misc{immigrationdb_immigrationdb_castro-valley-united-states-rent-salary-jobs-climate_c4766b12ef4d, author = {ImmigrationDB}, title = {Castro Valley, United States: rent, salary, jobs, climate}, publisher = {ImmigrationDB}, year = {2026}, date = {2026-09-14}, version = {approved-static-c751ebb1b4085a62}, snapshot = {approved-static-c751ebb1b4085a62}, url = {https://immigrationdb.com/cities/us/castro-valley/}, note = {Retrieved 2026-09-14. ImmigrationDB compilation. Compilation license: CC BY 4.0, https://creativecommons.org/licenses/by/4.0/}, } ``` ### Markdown [Castro Valley, United States: rent, salary, jobs, climate](https://immigrationdb.com/cities/us/castro-valley/) — ImmigrationDB; ImmigrationDB; snapshot approved-static-c751ebb1b4085a62; version approved-static-c751ebb1b4085a62; retrieved 2026-09-14; built 2026-09-14. - Citation schema: `immigrationdb-citation-v1` - Canonical URL: https://immigrationdb.com/cities/us/castro-valley/ - Title: Castro Valley, United States: rent, salary, jobs, climate - Author: ImmigrationDB - Publisher: ImmigrationDB - Snapshot: `approved-static-c751ebb1b4085a62` - Version: `approved-static-c751ebb1b4085a62` - Retrieved: 2026-09-14 - Built: 2026-09-14 - Compilation license: CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) ## Data - HTML: https://immigrationdb.com/cities/us/castro-valley/ - JSON: https://immigrationdb.com/data/cities/us/castro-valley.json - Markdown: https://immigrationdb.com/data/cities/us/castro-valley.md - MCP resource: immigrationdb://city/us/castro-valley - 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