--- entity_id: city:us:geonames:5235024 entity_type: city name: Colchester country_code: US country: United States slug: colchester canonical_url: https://immigrationdb.com/cities/us/colchester/ json_url: https://immigrationdb.com/data/cities/us/colchester.json markdown_url: https://immigrationdb.com/data/cities/us/colchester.md mcp_uri: immigrationdb://city/us/colchester snapshot_id: approved-static-c751ebb1b4085a62 generated_at: 2026-09-14 last_verified: 2026-09-11 fact_count: 19 language_location_count: 0 employment_location_count: 0 city_intent_block_count: 0 usefulness_tier: answer_linked 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/colchester/ citation_title: "Colchester, United States: jobs, safety, air quality" 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/ --- # Colchester Colchester is one of the cities recorded in the United States. Colchester recorded annual PM2.5 of 1.1 µg/m³ at the end of 2024. ## Answers Deterministic answers rendered from this page's published values. The JSON twin carries the machine-readable answer objects. ### Is the air quality good in Colchester? The annual PM2.5 mean is about 1.1 µg/m³ (2024) — within the WHO 2021 guideline. - Annual mean at the measuring site(s) serving the city; current-day readings differ. - Value: 1.1 µg/m³ · Period: 2024 - Claims: claim-7777c550dc9b ### How safe is Colchester? Police recorded about 1,975 incidents per 100,000 (2024). This counts all offences, so it is not comparable with a violent-crime-only rate from another source. - Value: 1,975 incidents per 100,000 · Period: 2024 - Claims: claim-130283e7ba7d ### What is the unemployment rate in Colchester? The unemployment rate is 2.3 % (2024-M12). - Value: 2.3 % · Period: 2024-M12 - Claims: claim-27b5ad501d44 ## Mobility Colchester's nearest airport was BTV, 8 km away and offered 10 direct destinations. ## Climate Monthly mean temperature moved from −6.2°C in January to 22.4°C in July. Colchester's monthly precipitation totalled 54.1 mm in January and 103.2 mm in July. Colchester's maximum PM2.5 level reached 14.8 µg/m³ at the end of 2024. ## Safety Colchester recorded a crime rate of 1,975.4 incidents per 100,000 residents at the end of 2024. ## Facts | Metric | metric_id | Value | Scope | Observed | Verified | Freshness | Lane | Source | | --- | --- | --- | --- | --- | --- | --- | --- | --- | | Safety City Property Crime Count | `safety_city_property_crime_count` | 261 offenses/year | city | 2025-12-31 | 2026-09-05 | aging | verified | [1] | | Unemployment rate | `unemployment_total_percent` | 2.3 % | city | 2024-12-31 | 2026-08-26 | stale | verified | [2] | | PM2.5 — annual mean | `air_quality_pm25_annual_ug_m3` | 1.07 µg/m³ | nearest_station | 2024-12-31 | 2026-08-06 | stale | verified | [3] | | Average daytime high by month | `climate_monthly_high_c` | Jan -1.7 · Feb -0.3 · Mar 5 · Apr 12.9 · May 20.6 · Jun 25.4 · Jul 28 · Aug 27 · Sep 22.5 · Oct 14.9 · Nov 8 · Dec 1.7 °C | nearest_station | 1991-12-31 | 2026-08-06 | stale | verified | [4] | | Average night-time low by month | `climate_monthly_low_c` | Jan -10.6 · Feb -9.8 · Mar -4.7 · Apr 2.1 · May 8.8 · Jun 14 · Jul 16.9 · Aug 15.9 · Sep 11.6 · Oct 5.5 · Nov 0.1 · Dec -5.9 °C | nearest_station | 1991-12-31 | 2026-08-06 | stale | verified | [4] | | Average temperature by month | `climate_monthly_mean_c` | Jan -6.2 · Feb -5.1 · Mar 0.2 · Apr 7.5 · May 14.7 · Jun 19.7 · Jul 22.4 · Aug 21.5 · Sep 17.1 · Oct 10.2 · Nov 4 · Dec -2.1 °C | nearest_station | 1991-12-31 | 2026-08-06 | stale | verified | [4] | | Average precipitation by month | `climate_monthly_precip_mm` | Jan 54.1 · Feb 44.9 · Mar 57 · Apr 78 · May 95.6 · Jun 108.1 · Jul 103.2 · Aug 90 · Sep 93.2 · Oct 97.3 · Nov 68.5 · Dec 63.5 mm | nearest_station | 1991-12-31 | 2026-08-06 | stale | verified | [4] | | G04 Air Quality Pm25 Max Ug M3 | `g04_air_quality_pm25_max_ug_m3` | 14.8 µg/m³ | nearest_station | 2024-12-31 | 2026-08-07 | stale | verified | [3] | | G04 Air Quality Pm25 Mean Annual Ug M3 | `g04_air_quality_pm25_mean_annual_ug_m3` | 6.57 µg/m³ | nearest_station | 2024-12-31 | 2026-08-07 | stale | verified | [3] | | G11 Annual Precipitation Mm | `g11_annual_precipitation_mm` | 953.4 mm | nearest_station | 1991-12-31 | 2026-08-07 | stale | verified | [5] | | G11 Max Temp C Jul | `g11_max_temp_c_jul` | 28 °C | nearest_station | 1991-12-31 | 2026-08-07 | stale | verified | [6] | | Average annual temperature | `g11_mean_annual_temp_c` | 8.7 °C | nearest_station | 1991-12-31 | 2026-08-07 | stale | verified | [7] | | G11 Min Temp C Jan | `g11_min_temp_c_jan` | -10.6 °C | nearest_station | 1991-12-31 | 2026-08-07 | stale | verified | [8] | | Recorded incidents per 100,000 residents | `crime_incidents_per_100k` | 1,975 offences per 100,000 | city | 2024-12-31 | 2026-08-04 | stale | verified | [9] | | Safety City Crime Covered Population | `safety_city_crime_covered_population` | 17,884 people | city | 2025-12-31 | 2026-09-05 | aging | verified | [1] | | Safety City Violent Crime Count | `safety_city_violent_crime_count` | 39 offenses/year | city | 2025-12-31 | 2026-09-05 | aging | verified | [1] | | Airport Direct Destinations Count | `airport_direct_destinations_count` | 10 count | city | 2026-08-03 | 2026-08-03 | fresh | verified | [10] | | Nearest Major Airport Distance Km | `nearest_major_airport_distance_km` | 8 km | city | 2026-08-03 | 2026-08-03 | fresh | verified | [11] | | Nearest Major Airport Iata | `nearest_major_airport_iata` | BTV | city | 2026-08-03 | 2026-08-03 | fresh | verified | [11] | 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 Colchester 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. FBI CIUS Table 8 by City 2025 (CDE offenses-known-to-le-2025.zip) — Official source — https://cde.ucr.cjis.gov/LATEST/s3/signedurl?key=cius%2F2025%2Foffenses-known-to-le-2025.zip 2. api.bls.gov — Official source — https://api.bls.gov/publicAPI/v2/timeseries/data/LAUCS501487500000003?startyear=2024&endyear=2024 3. US EPA Air Quality System (AQS) — Official source — https://aqs.epa.gov/aqsweb/airdata/annual_conc_by_monitor_2024.zip 4. NOAA National Centers for Environmental Information (NCEI) — Official source — https://www.ncei.noaa.gov/data/normals-monthly/1991-2020/ 5. NOAA National Centers for Environmental Information (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 6. NOAA National Centers for Environmental Information (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 7. NOAA National Centers for Environmental Information (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 8. NOAA National Centers for Environmental Information (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. FBI Crime Data Explorer / Uniform Crime Reporting — Official source — https://cde.ucr.cjis.gov/LATEST/webapp/#/pages/home 10. OpenFlights — Official source — https://raw.githubusercontent.com/jpatokal/openflights/master/data/routes.dat 11. 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). Colchester, United States: jobs, safety, air quality [ImmigrationDB compilation; snapshot approved-static-c751ebb1b4085a62; version approved-static-c751ebb1b4085a62]. ImmigrationDB. https://immigrationdb.com/cities/us/colchester/ Retrieved 2026-09-14. Compilation license: CC BY 4.0, https://creativecommons.org/licenses/by/4.0/ ### BibTeX ```bibtex @misc{immigrationdb_immigrationdb_colchester-united-states-jobs-safety-air-quality_68b3fe908c36, author = {ImmigrationDB}, title = {Colchester, United States: jobs, safety, air quality}, publisher = {ImmigrationDB}, year = {2026}, date = {2026-09-14}, version = {approved-static-c751ebb1b4085a62}, snapshot = {approved-static-c751ebb1b4085a62}, url = {https://immigrationdb.com/cities/us/colchester/}, note = {Retrieved 2026-09-14. ImmigrationDB compilation. Compilation license: CC BY 4.0, https://creativecommons.org/licenses/by/4.0/}, } ``` ### Markdown [Colchester, United States: jobs, safety, air quality](https://immigrationdb.com/cities/us/colchester/) — 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/colchester/ - Title: Colchester, United States: jobs, safety, air quality - 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/colchester/ - JSON: https://immigrationdb.com/data/cities/us/colchester.json - Markdown: https://immigrationdb.com/data/cities/us/colchester.md - MCP resource: immigrationdb://city/us/colchester - 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