--- entity_id: city:us:geonames:4160822 entity_type: city name: Keystone country_code: US country: United States slug: keystone canonical_url: https://immigrationdb.com/cities/us/keystone/ json_url: https://immigrationdb.com/data/cities/us/keystone.json markdown_url: https://immigrationdb.com/data/cities/us/keystone.md mcp_uri: immigrationdb://city/us/keystone 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/keystone/ citation_title: "Keystone, 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/ --- # Keystone Keystone is a city in the United States. Keystone had a population of 25,211 at the end of 2020. The city faced an unemployment rate of 3.2% at the end of 2024. Keystone had a foreign population of 3,543 at the end of 2024. ## Mobility Keystone's nearest airport was TPA, 22 km away and offered 68 direct destinations. ## Population Keystone covered an area of 90.7 km² at the end of 2025. Keystone had a population density of 285.2 people per km² at the end of 2024. ## Climate At the end of 2024, annual PM2.5 reached 6.1 µg/m³. Keystone's monthly mean temperatures were 16.7°C in January and 28.8°C in July. ## Facts | Metric | metric_id | Value | Scope | Observed | Verified | Freshness | Lane | Source | | --- | --- | --- | --- | --- | --- | --- | --- | --- | | Foreign residents | `foreign_population_total` | 3,543 people | city | 2024-12-31 | 2026-08-03 | stale | verified | [1] | | Population (built-up area) | `g01_population_total` | 25,858 people | city | 2020-12-31 | 2026-08-07 | stale | verified | [2] | | Population | `population_total` | 25,211 people | city | 2020-12-31 | 2026-08-05 | stale | verified | [3] | | Median monthly rent | `rent_median_city_eur_month` | 1,931 EUR/month | city | 2024-12-31 | 2026-09-11 | stale | supplemental | [4] | | Median gross salary | `salary_median_gross_city_eur_month` | 6,040 EUR/month | city | 2024-12-31 | 2026-09-11 | stale | supplemental | [5] | | Unemployment rate | `unemployment_total_percent` | 3.2 % | city | 2024-12-31 | 2026-08-03 | stale | verified | [1] | | PM2.5 — annual mean | `air_quality_pm25_annual_ug_m3` | 6.1 µg/m³ | nearest_station | 2024-12-31 | 2026-08-05 | stale | verified | [6] | | Average daytime high by month | `climate_monthly_high_c` | Jan 21.8 · Feb 23.3 · Mar 25.4 · Apr 28.3 · May 31.3 · Jun 32.5 · Jul 32.8 · Aug 32.9 · Sep 32.3 · Oct 29.8 · Nov 26 · Dec 23.3 °C | nearest_station | 1991-12-31 | 2026-08-05 | stale | verified | [7] | | Average night-time low by month | `climate_monthly_low_c` | Jan 11.6 · Feb 13.1 · Mar 15.2 · Apr 18.2 · May 21.5 · Jun 24.1 · Jul 24.8 · Aug 24.9 · Sep 24 · Oct 20.7 · Nov 16 · Dec 13.3 °C | nearest_station | 1991-12-31 | 2026-08-05 | stale | verified | [8] | | Average temperature by month | `climate_monthly_mean_c` | Jan 16.7 · Feb 18.2 · Mar 20.3 · Apr 23.3 · May 26.4 · Jun 28.3 · Jul 28.8 · Aug 28.9 · Sep 28.2 · Oct 25.2 · Nov 21 · Dec 18.3 °C | nearest_station | 1991-12-31 | 2026-08-05 | stale | verified | [9] | | Average precipitation by month | `climate_monthly_precip_mm` | Jan 67.2 · Feb 66.4 · Mar 63.9 · Apr 64.8 · May 66.2 · Jun 187.1 · Jul 196.9 · Aug 229.4 · Sep 154.7 · Oct 59.4 · Nov 35.6 · Dec 65 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` | 46.9 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` | 6.06 µg/m³ | nearest_station | 2024-12-31 | 2026-08-07 | stale | verified | [6] | | G11 Annual Precipitation Mm | `g11_annual_precipitation_mm` | 1,257 mm | nearest_station | 1991-12-31 | 2026-08-07 | stale | verified | [10] | | G11 Max Temp C Jul | `g11_max_temp_c_jul` | 32.8 °C | nearest_station | 1991-12-31 | 2026-08-07 | stale | verified | [7] | | Average annual temperature | `g11_mean_annual_temp_c` | 23.6 °C | nearest_station | 1991-12-31 | 2026-08-07 | stale | verified | [9] | | G11 Min Temp C Jan | `g11_min_temp_c_jan` | 11.6 °C | nearest_station | 1991-12-31 | 2026-08-07 | stale | verified | [8] | | City area | `city_area_km2` | 90.66 km² | city | 2025-12-31 | 2026-08-03 | aging | verified | [11] | | Foreign-resident share | `foreign_population_share_percent` | 13.7 % | city | 2024-12-31 | 2026-08-03 | stale | verified | [1] | | Population density | `population_density_per_km2` | 285.2 people/km² | city | 2024-12-31 | 2026-08-03 | stale | verified | [1] | | Airport Direct Destinations Count | `airport_direct_destinations_count` | 68 count | city | 2026-08-03 | 2026-08-03 | fresh | verified | [12] | | Nearest Major Airport Distance Km | `nearest_major_airport_distance_km` | 22 km | city | 2026-08-03 | 2026-08-03 | fresh | verified | [13] | | Nearest Major Airport Iata | `nearest_major_airport_iata` | TPA | 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 Keystone 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=16000US1235350%2C16000US1235550%2C16000US1235950%2C16000US1236062%2C16000US1236100%2C16000US1236121%2C16000US1236175%2C16000US1236375%2C16000US1236462%2C16000US1237648 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. U.S. Census Bureau, TIGERweb Census 2020 — Official source — https://tigerweb.geo.census.gov/arcgis/rest/services/TIGERweb/Places_CouSub_ConCity_SubMCD/MapServer/26/query?where=1%3D1&outFields=GEOID%2CNAME%2CBASENAME%2CSTATE%2CPLACE%2CPLACENS%2CPOP100%2CMTFCC%2CLSADC%2CFUNCSTAT&returnGeometry=false&f=json 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=16000US1236462 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=16000US1236462 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). Keystone, United States: rent, salary, jobs [ImmigrationDB compilation; snapshot approved-static-d7ed373c115d60d0; version approved-static-d7ed373c115d60d0]. ImmigrationDB. https://immigrationdb.com/cities/us/keystone/ Retrieved 2026-09-12. Compilation license: CC BY 4.0, https://creativecommons.org/licenses/by/4.0/ ### BibTeX ```bibtex @misc{immigrationdb_immigrationdb_keystone-united-states-rent-salary-jobs_8ea2a77dbfa3, author = {ImmigrationDB}, title = {Keystone, 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/keystone/}, note = {Retrieved 2026-09-12. ImmigrationDB compilation. Compilation license: CC BY 4.0, https://creativecommons.org/licenses/by/4.0/}, } ``` ### Markdown [Keystone, United States: rent, salary, jobs](https://immigrationdb.com/cities/us/keystone/) — 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/keystone/ - Title: Keystone, 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/keystone/ - JSON: https://immigrationdb.com/data/cities/us/keystone.json - Markdown: https://immigrationdb.com/data/cities/us/keystone.md - MCP resource: immigrationdb://city/us/keystone - 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