---
entity_id: city:us:geonames:4885336
entity_type: city
name: Boulder Hill
country_code: US
country: United States
slug: boulder-hill
canonical_url: https://immigrationdb.com/cities/us/boulder-hill/
json_url: https://immigrationdb.com/data/cities/us/boulder-hill.json
markdown_url: https://immigrationdb.com/data/cities/us/boulder-hill.md
mcp_uri: immigrationdb://city/us/boulder-hill
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: 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/boulder-hill/
citation_title: "Boulder Hill, United States: rent, salary, jobs, 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/
---

# Boulder Hill

Boulder Hill is a city in the United States, and the figures below are its published values. Residents of Boulder Hill numbered 8,394 at the end of 2020. Boulder Hill registered an unemployment rate of 10.36% at the end of 2024. Boulder Hill's foreign population totalled 1,510 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 Boulder Hill?

The published population was 8,394 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: 8,394 people · Period: April 2020
- Claims: claim-44c88e7764eb
### Is the air quality good in Boulder Hill?

The annual PM2.5 mean is about 6.7 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: 6.7 µg/m³ · Period: 2024
- Claims: claim-564dec6b343c
### What is the typical salary in Boulder Hill?

The median gross salary is about 2,953 EUR/month (ACS 2020-2024 5-year).

- City-scope median, gross, before tax and social contributions.
- Value: 2,953 EUR/month · Period: ACS 2020-2024 5-year
- Claims: claim-ffdba6d293db
### What is the unemployment rate in Boulder Hill?

The unemployment rate is about 10.4 % (2024).

- Value: 10.4 % · Period: 2024
- Claims: claim-9b9c5cad5ac6
## Mobility

Boulder Hill's nearest airport was ORD, 46 km away and offered 206 direct destinations.

## Population

Boulder Hill covered an area of 3.8 km² at the end of 2025. Boulder Hill's population density measured 2,383.8 people per km² at the end of 2024.

## Climate

Annual PM2.5 was 6.7 µg/m³ at the end of 2024. Monthly mean temperatures were −4.9°C in January and 23.6°C in July.

## Facts

| Metric | metric_id | Value | Scope | Observed | Verified | Freshness | Lane | Source |
| --- | --- | --- | --- | --- | --- | --- | --- | --- |
| Foreign residents | `foreign_population_total` | 1,510 people | city | 2024-12-31 | 2026-08-03 | stale | verified | [1] |
| Population (built-up area) | `g01_population_total` | 8,989 people | city | 2020-12-31 | 2026-08-07 | stale | verified | [2] |
| Population | `population_total` | 8,394 people | city | 2020-12-31 | 2026-08-05 | stale | verified | [3] |
| Median monthly rent | `rent_median_city_eur_month` | 1,409 EUR/month | city | 2024-12-31 | 2026-09-11 | stale | supplemental | [4] |
| Median gross salary | `salary_median_gross_city_eur_month` | 2,953 EUR/month | city | 2024-12-31 | 2026-09-11 | stale | supplemental | [5] |
| Unemployment rate | `unemployment_total_percent` | 10.36 % | city | 2024-12-31 | 2026-08-03 | stale | verified | [1] |
| PM2.5 — annual mean | `air_quality_pm25_annual_ug_m3` | 6.74 µg/m³ | nearest_station | 2024-12-31 | 2026-08-05 | stale | verified | [6] |
| Average daytime high by month | `climate_monthly_high_c` | Jan -0.833 · Feb 1.61 · Mar 8.33 · Apr 15.44 · May 21.72 · Jun 26.94 · Jul 28.89 · Aug 27.83 · Sep 24.33 · Oct 17.11 · Nov 8.78 · Dec 2 °C | nearest_station | 1991-12-31 | 2026-08-05 | stale | verified | [7] |
| Average night-time low by month | `climate_monthly_low_c` | Jan -8.89 · Feb -6.94 · Mar -1.72 · Apr 4.06 · May 10.06 · Jun 15.61 · Jul 18.22 · Aug 17.28 · Sep 12.94 · Oct 6.17 · Nov -0.167 · Dec -5.67 °C | nearest_station | 1991-12-31 | 2026-08-05 | stale | verified | [7] |
| Average temperature by month | `climate_monthly_mean_c` | Jan -4.89 · Feb -2.67 · Mar 3.28 · Apr 9.78 · May 15.89 · Jun 21.28 · Jul 23.56 · Aug 22.56 · Sep 18.61 · Oct 11.67 · Nov 4.28 · Dec -1.83 °C | nearest_station | 1991-12-31 | 2026-08-05 | stale | verified | [7] |
| Average precipitation by month | `climate_monthly_precip_mm` | Jan 47.24 · Feb 46.48 · Mar 59.69 · Apr 102.9 · May 123.4 · Jun 114.3 · Jul 106.4 · Aug 98.04 · Sep 85.6 · Oct 93.98 · Nov 68.83 · Dec 55.63 mm | nearest_station | 1991-12-31 | 2026-08-05 | stale | verified | [7] |
| G04 Air Quality Pm25 Max Ug M3 | `g04_air_quality_pm25_max_ug_m3` | 14.7 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` | 6.74 µg/m³ | nearest_station | 2024-12-31 | 2026-08-07 | stale | verified | [6] |
| City area | `city_area_km2` | 3.77 km² | city | 2025-12-31 | 2026-08-03 | aging | verified | [8] |
| Foreign-resident share | `foreign_population_share_percent` | 16.8 % | city | 2024-12-31 | 2026-08-03 | stale | verified | [1] |
| Population density | `population_density_per_km2` | 2,384 people/km² | city | 2024-12-31 | 2026-08-03 | stale | verified | [1] |
| Airport Direct Destinations Count | `airport_direct_destinations_count` | 206 count | city | 2026-08-03 | 2026-08-03 | fresh | verified | [9] |
| Nearest Major Airport Distance Km | `nearest_major_airport_distance_km` | 46 km | city | 2026-08-03 | 2026-08-03 | fresh | verified | [10] |
| Nearest Major Airport Iata | `nearest_major_airport_iata` | ORD | city | 2026-08-03 | 2026-08-03 | fresh | verified | [10] |

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 Boulder Hill 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=16000US1579700%2C16000US1579860%2C16000US1707419%2C16000US1711293%2C16000US1715664%2C16000US1717549%2C16000US1722255%2C16000US1724816%2C16000US1727644%2C16000US1728248
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=16000US1707419
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=16000US1707419
6. U.S. EPA Air Quality System / AirData — Official source — https://aqs.epa.gov/aqsweb/airdata/annual_conc_by_monitor_2024.zip
7. NOAA National Centers for Environmental Information — Official source — https://www.ncei.noaa.gov/data/normals-monthly/1991-2020/access/USC00110338.csv
8. 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
9. OpenFlights — Official source — https://raw.githubusercontent.com/jpatokal/openflights/master/data/routes.dat
10. 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). Boulder Hill, United States: rent, salary, jobs, air quality [ImmigrationDB compilation; snapshot approved-static-c751ebb1b4085a62; version approved-static-c751ebb1b4085a62]. ImmigrationDB. https://immigrationdb.com/cities/us/boulder-hill/ Retrieved 2026-09-14. Compilation license: CC BY 4.0, https://creativecommons.org/licenses/by/4.0/

### BibTeX

```bibtex
@misc{immigrationdb_immigrationdb_boulder-hill-united-states-rent-salary-jobs-air-quality_ba7c2b7c988e,
  author = {ImmigrationDB},
  title = {Boulder Hill, United States: rent, salary, jobs, air quality},
  publisher = {ImmigrationDB},
  year = {2026},
  date = {2026-09-14},
  version = {approved-static-c751ebb1b4085a62},
  snapshot = {approved-static-c751ebb1b4085a62},
  url = {https://immigrationdb.com/cities/us/boulder-hill/},
  note = {Retrieved 2026-09-14. ImmigrationDB compilation. Compilation license: CC BY 4.0, https://creativecommons.org/licenses/by/4.0/},
}
```

### Markdown

[Boulder Hill, United States: rent, salary, jobs, air quality](https://immigrationdb.com/cities/us/boulder-hill/) — 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/boulder-hill/
- Title: Boulder Hill, United States: rent, salary, jobs, 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/boulder-hill/
- JSON: https://immigrationdb.com/data/cities/us/boulder-hill.json
- Markdown: https://immigrationdb.com/data/cities/us/boulder-hill.md
- MCP resource: immigrationdb://city/us/boulder-hill
- 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