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Living in Cambridge

In Cambridge (Massachusetts), the median gross salary is €4,720 a month (2024).

The city had 17 schools in 2026. In July 2026, owner occupation was 33.5% and the vacancy rate was 9.84%. The population of Cambridge, in the United States, was 118,796 in July 2026. There were 15,189 physicians per 100,000 residents in 2026.

Last checked 2026-09-1933 sources

Population122,588people31 Dec 2025Official source · U.S. Census Bureau, Population Estimates Program
Median gross salary4,720EUR/month31 Dec 2024Official source · ACS 2024 1-year table-based Summary File, table B20002 (Median Earnings in the Past 12 Months (in 2024 inflation-adjusted dollars) by Sex for the Population 16 Years and Over with Earnings), place records
Median rent2,450EUR/month31 Dec 2024Independent source · Census Reporter mirror of ACS 2024 5-year tables
Unemployment rate3.39%31 Dec 2024Independent source · Census Reporter mirror of ACS 2024 5-year tables
Recorded crime3,081offences per 100,000country median 1,586 — 94% aboveOfficial source · FBI Crime Data Explorer / Uniform Crime Reporting
PM2.5, annual mean5.9µg/m³31 Dec 2024Independent source · EPA AQS annual PM2.5 monitor data 2024

Which United States-wide rules apply when you move to Cambridge?

National rules stay on the country page instead of being relabelled as city data.

Housing and cost

Median gross rent was US$2,787 per month, while the median home value was US$1,092,100 in July 2026. 45% of renter households spent at least 30% of income on housing in July 2026.

What recurs every month5 published recurring costs, € per month
Cambridge recurring monthly costs, € per month

€ / month

Private kindergarten€2460
Utilities, 85 m² flat€161
Fitness club€65
Internet, 60 Mbps€55
Mobile plan, 10 GB€50

Supplemental estimate lane; these items are not official statistics.

MetricValuePeriodSource
Fitness club membership, monthly65.3 EUR/month31 Jul 2026Numbeo - Cost of Living in Cambridge (Wayback Machine capture 20260120160917)33Supplemental estimate · Supplemental context
Internet, 60 Mbps unlimited55.14 EUR/month31 Jul 2026Numbeo - Cost of Living in Cambridge (Wayback Machine capture 20260120160917)33Supplemental estimate · Supplemental context
Private kindergarten, monthly2,460 EUR/month31 Jul 2026Numbeo - Cost of Living in Cambridge (Wayback Machine capture 20260120160917)33Supplemental estimate · Supplemental context
Mobile plan, 10 GB50.4 EUR/month31 Jul 2026Numbeo - Cost of Living in Cambridge (Wayback Machine capture 20260120160917)33Supplemental estimate · Supplemental context
Basic utilities, 85 m² home161.4 EUR/month31 Jul 2026Numbeo - Cost of Living in Cambridge (Wayback Machine capture 20260120160917)33Supplemental estimate · Supplemental context
Median gross rent$2,787/month4 Jul 2026ACS median gross rent4Official
Households spending over 30% of income on rent44.96 %4 Jul 2026ACS median gross rent4Official
Housing vacancy rate (legacy series)9.84 %4 Jul 2026ACS median gross rent4Official
Property crime per 100,000 residents1,654 per 100,000 people1 Jul 2026FBI CDE/UCR crime statistics12Official
Average monthly rent (whole dwelling)2,582 EUR/month31 Dec 2020ACS 2020-2024 5-year table-based Summary File, tables B25065 (Aggregate Gross Rent) and B25063 (Gross Rent, units with cash rent)2Official
Median monthly rent2,450 EUR/month31 Dec 2024Census Reporter mirror of ACS 2024 5-year tables27Supplemental estimate · Supplemental context
Recorded property crimes3,158 offenses/year31 Dec 2025FBI CIUS Table 8 by City 2025 (CDE offenses-known-to-le-2025.zip)13Official

Is Cambridge a good place to live?

There is no universal answer. The profile scores below show who the available published evidence may suit; they are a decision aid, not a personal recommendation.

Try your profile
Remote worker46%strong on work, weak on safety · range 37–55%
Skilled employee52%strong on work, weak on safety · range 44–60%
Student42%strong on education, weak on work · range 33–51%
Family38%strong on family, weak on cost · range 30–46%
Retirement38%strong on air quality, weak on admin · range 28–48%

Worked out from these numbers

How international is the population?

28.8% of residents hold a foreign nationality — 35,245 of 122,588 people. This counts nationality, not place of birth, so long-settled residents who naturalised are not in it.

Work and income

Median household income was US$130,748 a year in July 2026.

Unemployment across cities in United StatesUnemployment in Cambridge is 3.4%. Of 2,153 cities with data, 1,250 have unemployment of 0 to under 5%.

Unemployment rate (%)

MetricValuePeriodSource
Median household income130,748 USD/year4 Jul 2026ACS total population5Official
Households with cable, fibre or DSL broadband86.36 %4 Jul 2026ACS total population5Official
Households with a broadband subscription94.77 %4 Jul 2026ACS total population5Official
Households with internet but no subscription2.8 %4 Jul 2026ACS total population5Official
Households without internet2.4 %4 Jul 2026ACS total population5Official
Households with satellite internet3.12 %4 Jul 2026ACS total population5Official
Median gross salary4,720 EUR/month31 Dec 2024ACS 2024 1-year table-based Summary File, table B20002 (Median Earnings in the Past 12 Months (in 2024 inflation-adjusted dollars) by Sex for the Population 16 Years and Over with Earnings), place records3Official
Median gross salary (regional)4,923 EUR/month31 Dec 2025www.bls.gov26Official
Unemployment rate3.39 %31 Dec 2024Census Reporter mirror of ACS 2024 5-year tables27Supplemental estimate · Supplemental context

What does a salary buy in Cambridge?

Take-home pay after tax, minus rent and the everyday bills this city publishes. Each line names its source.

Cambridge median gross pay: €4,720 (ACS 2024 1-year table-based Summary File, table B20002 (Median Earnings in the Past 12 Months (in 2024 inflation-adjusted dollars) by Sex for the Population 16 Years and Over with Earnings), place records, 2024-12-31).
Left over each month€791of €3,640 take-home
  • Rent
  • Utilities
  • Internet
  • Mobile
  • Left over
Line-by-line breakdown and sources
Each month€
Take-home payOECD Taxing Wages 2025, single, no children. Includes central and local income tax and employee social contributions; euro amounts at the ECB average for 2026-08.€3,640
Rentaverage rent of a whole dwelling · official · ACS 2020-2024 5-year table-based Summary File, tables B25065 (Aggregate Gross Rent) and B25063 (Gross Rent, units with cash rent) · 2020-12-31− €2,582
Public transport passnot published for this city—
Utilities, 85 m²€161 · market price · Numbeo - Cost of Living in Cambridge (Wayback Machine capture 20260120160917) · 2026-07-31− €161
Internet€55 · market price · Numbeo - Cost of Living in Cambridge (Wayback Machine capture 20260120160917) · 2026-07-31− €55
Mobile plan€50 · market price · Numbeo - Cost of Living in Cambridge (Wayback Machine capture 20260120160917) · 2026-07-31− €50
Left overbefore the bill this city does not publish€791
Take-home pay for other salaries and households Compare with another city Check a job offer in Cambridge Salary needed to live in Cambridge

Public employment service

No exact public employment office is currently linked to Cambridge. The verified national service may still offer online registration, job search or an official office finder.

Country-level information

American Job Centers — Public employment service

U.S. Department of Labor Employment and Training Administration

Job Search

Country-level service information is not treated as proof of a physical office in Cambridge. Sources checked through 10 Aug 2026.

Family and education

MetricValuePeriodSource
Residents with high school education or higher96.05 %4 Jul 2026ACS median gross rent4Official
Schools17 schools30 Jun 2026NCES CCD public school count16Official
School enrolment, share of residents35.53 %4 Jul 2026ACS median gross rent4Official

Healthcare

MetricValuePeriodSource
Mental health provider ratio604 ratio30 Jun 2026HRSA mental health provider ratio15Official
Primary care doctors per 100,000 residents15,189 per 100,000 people30 Jun 2026HRSA mental health provider ratio15Official
Preventable hospitalizations3,814 per 100,000 people30 Jun 2026HRSA mental health provider ratio15Official
GP practices469 count13 Sept 2026NPPES Data Dissemination V.2 — September 202620Official
Hospitals6 count30 Sept 2026CMS Hospital General Information9Official
Pharmacies14 count13 Sept 2026NPPES Data Dissemination V.2 — September 202620Official
Physicians per 100,000 residents924.2 per 100,00013 Sept 2026NPPES Data Dissemination V.2 — September 202620Official

Yes — migrants can receive medical care in Cambridge when the national insurance or residence conditions are met.

Healthcare access follows the country-wide insurance rules; local capacity facts remain city data and are not used as proof of eligibility.

Open the official coverage guide
Country rule verified 2026-08-03.

Safety

Recorded crime across major citiesCambridge highlighted among comparable cities
Recorded crime across major cities with Cambridge highlighted

recorded incidents per 100k residents

Philadelphia5,457
Houston5,442
San Antonio5,218
Chicago4,012
Dallas4,010
Austin3,709
Fort Worth3,158
Phoenix3,125
Cambridge3,081
New York City3,039
Los Angeles2,212
San Diego2,082
MetricValuePeriodSource
Burglaries per 100,000 residents235.8 incidents per 100,00031 Dec 2024US-FBI-CDE-MA0091100-202423Official
Recorded incidents per 100,000 residents3,081 offences per 100,000country median 1,58631 Dec 2024FBI Crime Data Explorer / Uniform Crime Reporting14Official
Violent crime per 100,000 residents436.7 incidents per 100,00031 Dec 2024US-FBI-CDE-MA0091100-202424Official
Recorded violent crimes530 offenses/year31 Dec 2025FBI CIUS Table 8 by City 2025 (CDE offenses-known-to-le-2025.zip)13Official

Mobility and administration

MetricValuePeriodSource
Average commute time25.85 minutes4 Jul 2026ACS total population5Official
Workers commuting by bicycle7.77 %4 Jul 2026ACS total population5Official
Workers commuting by public transport17.99 %4 Jul 2026ACS total population5Official
Workers walking to work19.16 %4 Jul 2026ACS total population5Official
Nearest airportBNH3 Aug 2026OurAirports21Official
Distance to nearest airport7 km3 Aug 2026OurAirports21Official

Language courses and integration

No exact city-level course record is currently published for Cambridge. These verified national programmes may still apply; use the official programme page to check local availability.

Country-level information

Adult Education and English Language Acquisition (AEFLA) — State Language Course

U.S. Department of Education

For adult learners, adult English-language learners.

EnglishIn Person, Online, HybridCost varies

USCIS English and citizenship class finder — Civic Orientation

U.S. Citizenship and Immigration Services

For immigrants, future citizens.

EnglishIn Person, OnlineCost varies
National programme information is not treated as proof of a course location in Cambridge.

Find courses near Cambridge

Climate and air quality

Temperature through the yearAverage daytime high and night-time low, °C
Rainfall through the yearAverage monthly precipitation, mm
Air quality vs health guidelinesAnnual means against WHO 2021 guidelines and EU legal limits

City values from the published air-quality observations. WHO 2021 guidelines and EU limit values are published constants.

PM2.5 across cities in United StatesAnnual PM2.5 in Cambridge is 5.9 µg/m³. Of 968 cities with data, 261 have annual PM2.5 of 6 to under 7 µg/m³.

Annual PM2.5 (µg/m³)

MetricValuePeriodSource
PM2.5 — annual mean5.9 µg/m³31 Dec 2024EPA AQS annual PM2.5 monitor data 202432Supplemental estimate · Supplemental context
Average daytime high by monthJan 2.67 · Feb 3.89 · Mar 7.5 · Apr 13.56 · May 19.17 · Jun 24.56 · Jul 27.83 · Aug 26.89 · Sep 22.83 · Oct 16.72 · Nov 10.89 · Dec 5.67 °C1991–2020NOAA U.S. Monthly Climate Normals 1991-2020 — station USW00014739 (BOSTON)19Official · nearest-station reading
Average night-time low by monthJan -7 · Feb -6.11 · Mar -2 · Apr 3.39 · May 9 · Jun 14.39 · Jul 17.78 · Aug 16.94 · Sep 12.72 · Oct 6.11 · Nov 1.22 · Dec -3.5 °C1991–2020NOAA U.S. Monthly Climate Normals 1991-2020 — station USC00193890 (JAMAICA PLAIN)18Official · nearest-station reading
Average temperature by monthJan -1.1 · Feb -0.1 · Mar 3.5 · Apr 9.2 · May 14.7 · Jun 20 · Jul 23.4 · Aug 22.6 · Sep 18.7 · Oct 12.7 · Nov 7.1 · Dec 2.1 °C31 Dec 1991World Meteorological Organization / NOAA NCEI25Official
Average precipitation by monthJan 86.11 · Feb 81.53 · Mar 105.9 · Apr 92.2 · May 82.55 · Jun 98.81 · Jul 83.06 · Aug 82.04 · Sep 90.42 · Oct 102.4 · Nov 92.96 · Dec 109.2 mm1991–2020NOAA U.S. Monthly Climate Normals 1991-2020 — station USW00014739 (BOSTON)19Official · nearest-station reading
PM2.5, highest monitored reading35.1 µg/m³1 Jul 2026EPA AirData PM2.5 annual mean11Official source, approximated value · Supplemental context · county
PM2.5, annual mean6.77 µg/m³1 Jul 2026EPA AirData PM2.5 annual mean11Official source, approximated value · Supplemental context · county
PM2.5 monitoring sites17 monitors1 Jul 2026EPA AirData PM2.5 annual mean11Official source, approximated value · Supplemental context · county
Annual precipitation1,416 mm30 Jun 2026NOAA GHCN-Daily climate normals17Official source, approximated value · Supplemental context · station observation
Maximum July temperature24.09 °C30 Jun 2026NOAA GHCN-Daily climate normals17Official source, approximated value · Supplemental context · station observation
Average annual temperature11.91 °C30 Jun 2026NOAA GHCN-Daily climate normals17Official source, approximated value · Supplemental context · station observation
Minimum January temperature2.89 °C30 Jun 2026NOAA GHCN-Daily climate normals17Official source, approximated value · Supplemental context · station observation

Similar climate. In United States: Lynn ±0.9 °C. Elsewhere: Markham (Canada) ±1.3 °C, Mississauga (Canada) ±1.3 °C, Richmond Hill (Canada) ±1.3 °C, Vaughan (Canada) ±1.3 °C, Chatham-Kent (Canada) ±1.4 °C. Twenty closest, compared month by month

Monthly highs and lows against the 1991–2020 station normals of the nearest station; ± is the average monthly difference.

Population and city profile

Who lives hereResidents by nationality, % of population

Calculated from the population and foreign-resident facts on this page.

MetricValuePeriodSource
Foreign-resident share29.67 %31 Dec 2020ACS 2020-2024 5-year table-based Summary File, table B05002 (Place of Birth by Nativity and Citizenship Status), place records1Official
Foreign residents35,245 people31 Dec 2020ACS 2020-2024 5-year table-based Summary File, table B05002 (Place of Birth by Nativity and Citizenship Status), place records1Official
Population density7,399 people/km²31 Dec 2025Census Reporter / U.S. Census Bureau8Official
Population122,588 people31 Dec 2025U.S. Census Bureau, Population Estimates Program22Official
Population covered by crime statistics121,634 people31 Dec 2025FBI CIUS Table 8 by City 2025 (CDE offenses-known-to-le-2025.zip)13Official

Additional context

MetricValuePeriodSource
Median home value1,092,100 USD4 Jul 2026ACS median gross rent4Official
Owner-occupied homes33.47 %4 Jul 2026ACS median gross rent4Official
Labour force participation rate69.63 %4 Jul 2026ACS total population5Official
Residents born abroad29.67 %4 Jul 2026ACS total population5Official
Naturalized citizens, share of residents11.49 %4 Jul 2026ACS total population5Official
Non-citizens, share of residents18.17 %4 Jul 2026ACS total population5Official
Flu vaccination coverage72.47 %30 Jun 2026CDC BRFSS flu vaccination coverage6Official
Mammography screening coverage84.5 %30 Jun 2026CDC mammography screening rate7Official
Residents without health insurance1.7 %4 Jul 2026ACS median gross rent4Official
Residents with a bachelor's degree or higher80.78 %4 Jul 2026ACS median gross rent4Official
Crime reporting agencies1 agencies1 Jul 2026FBI CDE/UCR crime statistics12Official
Households with a vehicle available66.83 %4 Jul 2026ACS median gross rent4Official
Public transport agencies in the National Transit Database0 agencies4 Jul 2026ACS total population5Official
Workers aged 16 and over69,864 workers4 Jul 2026ACS total population5Official
Workers mainly working from home30.79 %4 Jul 2026ACS total population5Official
Households using cellular data plans90.85 %4 Jul 2026ACS total population5Official

Alternatives for people set on Cambridge

Three places for the three reasons people leave a city on the shortlist: stay in the region, stay in the country, or keep the budget and change the country. A percentage appears only where both cities publish that metric from the same source, period and grain. Distances are straight lines — travel times are not collected yet.

Somerville as a Cambridge alternative in the same region

1 km away, better on 2 of 5 metrics measured the same way, worse on 0. Median gross pay, city and foreign residents cannot be compared like for like.

  • Recorded crime, per 100k: 1,920 Somerville vs 3,081 Cambridge−38%
  • Median gross pay, city: €5,158 Somerville vs €4,720 Cambridgeno percentage
  • Unemployment: 3.0% Somerville vs 3.4% Cambridge−12%
  • Residents: 84,211 Somerville vs 122,588 Cambridge−31%
  • Foreign residents: 13.7% Somerville vs 29.7% Cambridgeno percentage
  • Median gross pay, region: €4,923 Somerville vs €4,923 Cambridgesame level
  • Annual PM2.5: 5.9 µg/m³ Somerville vs 5.9 µg/m³ Cambridgesame level

Cities near Cambridge

Published cities within 25 km, nearest first. Distances are straight-line.

Alternative cities in United States

Other cities in United States to compare with Cambridge, nearest in population first.

All United States cities

How does Cambridge compare?

Pick a city. The answer appears here and the address bar keeps it, so the comparison can be shared; the page stays Cambridge's.

Cambridge in rankings

Common questions

Answered from the published values on this page, each with its source and date.

What is the typical salary around Cambridge?

The median gross salary is 4,923 EUR/month. Source: www.bls.gov.

What is the unemployment rate in Cambridge?

The unemployment rate is 3.39 %. This is a supplemental estimate, not an official municipal measurement. Source: Census Reporter mirror of ACS 2024 5-year tables.

Is the air quality good in Cambridge?

The annual PM2.5 mean is 5.9 µg/m³. The WHO 2021 guideline is 5 µg/m³ and the EU limit value is 25 µg/m³, so this reading is above the WHO guideline but within the EU limit. This is a supplemental estimate, not an official municipal measurement. Source: EPA AQS annual PM2.5 monitor data 2024.

How safe is Cambridge?

Police recorded 3,081 offences per 100,000. This counts all offences, so it is not comparable with a violent-crime-only rate from another source. Source: FBI Crime Data Explorer / Uniform Crime Reporting.

How many people live in Cambridge?

The published population is 122,588 people. Source: U.S. Census Bureau, Population Estimates Program.

How many foreign residents live in Cambridge?

35,245 residents hold a foreign nationality. Source: ACS 2020-2024 5-year table-based Summary File, table B05002 (Place of Birth by Nativity and Citizenship Status), place records.

Is Cambridge a good place to live?

Cambridge may suit different people for different reasons. The page's profile scores compare published cost, work, housing, safety, healthcare and other available factors; they are a decision aid, not a universal recommendation.

Which cities are near Cambridge?

West Cambridge/Harvard Square, Somerville, Lower Allston, Kendall Square, East Somerville are near Cambridge. Typed relationship labels are shown where published; other rows use straight-line distance from admitted coordinates.

Cite this page

Open a format to select or copy this ImmigrationDB compilation citation. The native disclosure and text fallback work without JavaScript.

APA citation
ImmigrationDB. (2026, October 16). Cambridge (Massachusetts), United States: population, rent [ImmigrationDB compilation; version ac67cbe26c861cc1d2852443f5b5eb0d]. ImmigrationDB. https://immigrationdb.com/cities/us/cambridge-ma/ Retrieved 2026-10-16. Compilation license: CC BY 4.0, https://creativecommons.org/licenses/by/4.0/
BibTeX citation
@misc{immigrationdb_immigrationdb_cambridge-massachusetts-united-states-population-rent_28f3e72af5b2,
  author = {ImmigrationDB},
  title = {Cambridge (Massachusetts), United States: population, rent},
  publisher = {ImmigrationDB},
  year = {2026},
  date = {2026-10-16},
  version = {ac67cbe26c861cc1d2852443f5b5eb0d},
  url = {https://immigrationdb.com/cities/us/cambridge-ma/},
  note = {Retrieved 2026-10-16. ImmigrationDB compilation. Compilation license: CC BY 4.0, https://creativecommons.org/licenses/by/4.0/},
}
Markdown citation
[Cambridge (Massachusetts), United States: population, rent](https://immigrationdb.com/cities/us/cambridge-ma/) — ImmigrationDB; ImmigrationDB; version ac67cbe26c861cc1d2852443f5b5eb0d; retrieved 2026-10-16; built 2026-10-16.

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. View the underlying source records.

Sources

JSON Markdown
  1. ACS 2020-2024 5-year table-based Summary File, table B05002 (Place of Birth by Nativity and Citizenship Status), place records www2.census.gov · checked 2026-09-18
  2. ACS 2020-2024 5-year table-based Summary File, tables B25065 (Aggregate Gross Rent) and B25063 (Gross Rent, units with cash rent) www2.census.gov · checked 2026-09-19
  3. ACS 2024 1-year table-based Summary File, table B20002 (Median Earnings in the Past 12 Months (in 2024 inflation-adjusted dollars) by Sex for the Population 16 Years and Over with Earnings), place records www2.census.gov · checked 2026-09-18
  4. ACS median gross rent api.censusreporter.org · checked 2026-07-04
  5. ACS total population api.censusreporter.org · checked 2026-07-04
  6. CDC BRFSS flu vaccination coverage data.cdc.gov · checked 2026-06-30
  7. CDC mammography screening rate data.cdc.gov · checked 2026-06-30
  8. Census Reporter / U.S. Census Bureau api.censusreporter.org · checked 2026-08-03
  9. CMS Hospital General Information data.cms.gov · checked 2026-09-15
  10. download.geonames.org recorded crime data download.geonames.org · checked 2026-08-28
Show 23 more sources
  1. EPA AirData PM2.5 annual mean aqs.epa.gov · checked 2026-07-01
  2. FBI CDE/UCR crime statistics cde.ucr.cjis.gov · checked 2026-07-01
  3. FBI CIUS Table 8 by City 2025 (CDE offenses-known-to-le-2025.zip) cde.ucr.cjis.gov · checked 2026-09-05
  4. FBI Crime Data Explorer / Uniform Crime Reporting cde.ucr.cjis.gov · checked 2026-08-04
  5. HRSA mental health provider ratio data.hrsa.gov · checked 2026-06-30
  6. NCES CCD public school count nces.ed.gov · checked 2026-06-30
  7. NOAA GHCN-Daily climate normals ncei.noaa.gov · checked 2026-06-30
  8. NOAA U.S. Monthly Climate Normals 1991-2020 — station USC00193890 (JAMAICA PLAIN) NOAA U.S. Monthly Climate Normals 1991-2020 · ncei.noaa.gov · checked 2026-07-31
  9. NOAA U.S. Monthly Climate Normals 1991-2020 — station USW00014739 (BOSTON) NOAA U.S. Monthly Climate Normals 1991-2020 · ncei.noaa.gov · checked 2026-07-31
  10. NPPES Data Dissemination V.2 — September 2026 NPPES Data Dissemination V.2 · download.cms.gov · checked 2026-09-18
  11. OurAirports davidmegginson.github.io · checked 2026-08-03
  12. U.S. Census Bureau, Population Estimates Program www2.census.gov · checked 2026-08-03
  13. US-FBI-CDE-MA0091100-2024 cde.ucr.cjis.gov · checked 2026-09-15
  14. US-FBI-CDE-MA0091100-2024 cde.ucr.cjis.gov · checked 2026-09-15
  15. World Meteorological Organization / NOAA NCEI nodc.noaa.gov · checked 2026-08-03
  16. www.bls.gov bls.gov · checked 2026-08-27
  17. Census Reporter mirror of ACS 2024 5-year tables api.censusreporter.org · checked 2026-07-26
  18. Coordinate identity evidence wikidata.org · checked 2026-09-06
  19. Coordinate identity evidence wikidata.org · checked 2026-09-06
  20. Coordinate identity evidence wikidata.org · checked 2026-09-06
  21. Coordinate identity evidence wikidata.org · checked 2026-09-06
  22. EPA AQS annual PM2.5 monitor data 2024 aqs.epa.gov · checked 2026-07-26
  23. Numbeo - Cost of Living in Cambridge (Wayback Machine capture 20260120160917) numbeo.com · checked 2026-07-31

Spotted a number that looks wrong? Every value here carries its source and date — tell us what you found and we will re-check it against the source.