--- page_version: 4126609f3f15eb016eed68824a2a5e04 content_date: 2026-10-16 entity_id: city:us:geonames:5323499 entity_type: city name: Alta Sierra name_en: Alta Sierra country_code: US country: United States slug: alta-sierra canonical_url: https://immigrationdb.com/cities/us/alta-sierra/ json_url: https://immigrationdb.com/data/cities/us/alta-sierra.json markdown_url: https://immigrationdb.com/data/cities/us/alta-sierra.md mcp_uri: immigrationdb://city/us/alta-sierra snapshot_id: approved-static-48d32b636f07abc8 generated_at: 2026-10-25 last_verified: 2026-10-07 fact_count: 13 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/alta-sierra/ citation_title: "Alta Sierra (California), United States: population, climate" citation_author: ImmigrationDB citation_publisher: ImmigrationDB citation_snapshot_id: approved-static-48d32b636f07abc8 citation_version: "4126609f3f15eb016eed68824a2a5e04" citation_retrieval_date: "2026-10-16" citation_build_date: "2026-10-16" citation_license_url: https://creativecommons.org/licenses/by/4.0/ --- # Alta Sierra Alta Sierra numbered 111 residents at the end of 2020. ## Mobility Alta Sierra's nearest airport was BFL, 56 km away and offered 5 direct destinations. ## Population At the end of 2025, the city's area measured 2.6 km². ## Climate Monthly mean temperature moved from 7.8°C in January to 27°C in July. Monthly precipitation was 58.2 mm in January and 3.6 mm in July. ## Facts | Metric | metric_id | Value | Scope | Observed | Verified | Freshness | Lane | Source | | --- | --- | --- | --- | --- | --- | --- | --- | --- | | Population (built-up area) | `g01_population_total` | 12 people | city | 2020-12-31 | 2026-08-07 | stale | verified | [1] | | Population | `population_total` | 111 people | city | 2020-12-31 | 2026-08-05 | stale | verified | [2] | | Average daytime high by month | `climate_monthly_high_c` | Jan 15.89 · Feb 17.11 · Mar 19.44 · Apr 22.28 · May 26.78 · Jun 32.56 · Jul 37 · Aug 36.56 · Sep 33.22 · Oct 27.06 · Nov 20.39 · Dec 15.78 °C | nearest_station | 1991-12-31 | 2026-08-05 | stale | verified | [3] | | Average night-time low by month | `climate_monthly_low_c` | Jan -0.278 · Feb 0.722 · Mar 2.39 · Apr 4.72 · May 8.89 · Jun 13.44 · Jul 17 · Aug 16.5 · Sep 13.22 · Oct 7.89 · Nov 2.17 · Dec -0.444 °C | nearest_station | 1991-12-31 | 2026-08-05 | stale | verified | [3] | | Average temperature by month | `climate_monthly_mean_c` | Jan 7.83 · Feb 8.89 · Mar 10.89 · Apr 13.5 · May 17.83 · Jun 23 · Jul 27 · Aug 26.56 · Sep 23.22 · Oct 17.5 · Nov 11.28 · Dec 7.67 °C | nearest_station | 1991-12-31 | 2026-08-05 | stale | verified | [3] | | Average precipitation by month | `climate_monthly_precip_mm` | Jan 58.17 · Feb 60.71 · Mar 43.43 · Apr 17.02 · May 10.92 · Jun 2.54 · Jul 3.56 · Aug 1.78 · Sep 5.84 · Oct 13.97 · Nov 34.29 · Dec 48.51 mm | nearest_station | 1991-12-31 | 2026-08-05 | stale | verified | [3] | | City area | `city_area_km2` | 2.63 km² | city | 2025-12-31 | 2026-08-03 | aging | verified | [4] | | Internet, 60 Mbps unlimited | `col_internet_60mbps_eur_month` | 60.38 EUR/month | national_market | 2026-09-30 | 2026-09-19 | fresh | verified | [5] | | Mobile plan, 10 GB | `col_mobile_plan_10gb_eur_month` | 21.57 EUR/month | national_market | 2026-09-30 | 2026-09-19 | fresh | verified | [6] | | Physicians per 100,000 residents | `physicians_per_100k` | 148.1 per 100,000 | county | 2023-12-31 | 2026-10-07 | stale | verified | [7] | | Direct destinations from the nearest major airport | `airport_direct_destinations_count` | 5 count | city | 2026-08-03 | 2026-08-03 | fresh | verified | [8] | | Distance to the nearest major airport | `nearest_major_airport_distance_km` | 56 km | city | 2026-08-03 | 2026-08-03 | fresh | verified | [9] | | Nearest major airport (IATA code) | `nearest_major_airport_iata` | BFL | city | 2026-08-03 | 2026-08-03 | fresh | verified | [9] | 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 Alta Sierra 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. 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 2. 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 3. NOAA National Centers for Environmental Information — Official source — https://www.ncei.noaa.gov/data/normals-monthly/1991-2020/access/USC00044523.csv 4. 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 5. Verizon 300 Mbps home internet — Official source — https://www.verizon.com/home/internet/ 6. Visible unlimited mobile plan — Official source — https://www.visible.com/plans 7. Area Health Resources Files (AHRF), County 2024-2025 release — Official source — https://data.hrsa.gov/DataDownload/AHRF/AHRF_2024-2025_CSV.zip 8. OpenFlights — Official source — https://raw.githubusercontent.com/jpatokal/openflights/master/data/routes.dat 9. 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, October 16). Alta Sierra (California), United States: population, climate [ImmigrationDB compilation; version 4126609f3f15eb016eed68824a2a5e04]. ImmigrationDB. https://immigrationdb.com/cities/us/alta-sierra/ Retrieved 2026-10-16. Compilation license: CC BY 4.0, https://creativecommons.org/licenses/by/4.0/ ### BibTeX ```bibtex @misc{immigrationdb_immigrationdb_alta-sierra-california-united-states-population-climate_3d01ee8bd51a, author = {ImmigrationDB}, title = {Alta Sierra (California), United States: population, climate}, publisher = {ImmigrationDB}, year = {2026}, date = {2026-10-16}, version = {4126609f3f15eb016eed68824a2a5e04}, url = {https://immigrationdb.com/cities/us/alta-sierra/}, note = {Retrieved 2026-10-16. ImmigrationDB compilation. Compilation license: CC BY 4.0, https://creativecommons.org/licenses/by/4.0/}, } ``` ### Markdown [Alta Sierra (California), United States: population, climate](https://immigrationdb.com/cities/us/alta-sierra/) — ImmigrationDB; ImmigrationDB; version 4126609f3f15eb016eed68824a2a5e04; retrieved 2026-10-16; built 2026-10-16. - Citation schema: `immigrationdb-citation-v1` - Canonical URL: https://immigrationdb.com/cities/us/alta-sierra/ - Title: Alta Sierra (California), United States: population, climate - Author: ImmigrationDB - Publisher: ImmigrationDB - Snapshot: `approved-static-48d32b636f07abc8` - Version: `4126609f3f15eb016eed68824a2a5e04` - Retrieved: 2026-10-16 - Built: 2026-10-16 - Compilation license: CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) ## Data - HTML: https://immigrationdb.com/cities/us/alta-sierra/ - JSON: https://immigrationdb.com/data/cities/us/alta-sierra.json - Markdown: https://immigrationdb.com/data/cities/us/alta-sierra.md - MCP resource: immigrationdb://city/us/alta-sierra - 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