Reports
Useful questions answered from the data already available across ImmigrationDB — with method, coverage, sources and reusable datasets.
44published reports
34city-data rankings
10Visa, work and tax guides
Every ranking uses one selected metric and retains the original source, date, unit and geographic scope.
44 source-backed reportsCity data now produces reusable rankings; publication still depends on comparable metrics and direct sources.
| Report | What you’ll find | Primary source | Checked |
|---|---|---|---|
| Best-connected city airports | Cities ranked by the number of destinations recorded for their nearest airport in the current OpenFlights-derived layer. | OpenFlights — routes.dat — nearest_airport_destinations_count | 2026-06-13 |
| Cities closest to a recorded airport | Published city records ranked by straight-line distance to the nearest airport in the current airport layer. | OurAirports — airports.csv — nearest_airport_iata | 2026-06-13 |
| Cities with the lowest PM2.5 levels | Cities ranked by the lowest available annual PM2.5 observation from the same selected metric family. | Official ECCC/NAPS 2024 annual daily-mean station observations, reproducibly aggregated as an arithmetic mean for eligible stations within 25 km of the target city coordinate. This is a derived place proxy, not an asserted municipal monitor aggregate. | 2026-07-15 |
| Cities with the fastest fixed internet | Published city and regional fixed-internet speed observations ranked without mixing units. | traficom_laaajakaistaselvitys | 2026-06-12 |
| Cities with the highest car density | Cars per 1,000 residents ranked across published city records with source and observation date retained. | Kraftfahrt-Bundesamt — FZ 3 vehicle stock by municipality — car_density_per_1000 | 2026-07-15 |
| Cities with the highest foreign-population share | Published cities ranked by the share of foreign residents using one percentage metric. | CBS Kerncijfers wijken en buurten 2025, municipality-grain passenger-car universe (Personenauto's totaal) divided by the same-table municipality population. | 2026-07-15 |
| Cities with the largest foreign populations | Published city records ranked by the official number of foreign residents; definitions remain source-specific. | Official 2021 Census GCP G01 Birthplace_Elsewhere_P: persons born outside Australia, at exact associated 2021 SUA grain. This is foreign-born, not foreign nationality. | 2026-07-15 |
| Cities with the lowest annual NO2 | Published annual nitrogen-dioxide observations ranked from lowest to highest using one unit and metric. | Official exact-kommun station observations are derived to a kommun aggregate. | 2026-07-15 |
| Cities with the lowest annual PM2.5 | Published annual PM2.5 observations ranked from lowest to highest without mixing current readings and annual values. | Official ECCC/NAPS 2024 annual daily-mean station observations, reproducibly aggregated as an arithmetic mean for eligible stations within 25 km of the target city coordinate. This is a derived place proxy, not an asserted municipal monitor aggregate. | 2026-07-15 |
| Cities with the lowest recorded crime rate | Published crime incidents per 100,000 residents; definitions can differ by source and must be read with each row. | Lietuvos statistikos departamentas (LSD) + Policijos departamentas | 2026-06-12T00:00:00Z |
| Cities with the lowest published unemployment | A source-backed comparison using one consistent unemployment metric and keeping regional fallbacks visible. | NAV | 2026-07-11 |
| Cities with the highest physician coverage | Physicians per 100,000 residents ranked from reusable A/B observations with geographic scope retained. | Official INE Statistics of Health Personnel indicator 0012837: physicians per 1,000 inhabitants by municipality of residence. Exact municipality row selected by INE DICO geocod; value converted to the requested per-100k unit. | 2026-07-15 |
| Countries with an official digital-nomad or remote-work route | Current destination routes explicitly classified as remote or digital-nomad pathways, with the official source and exact locator. | Task547 official source task547-derived-source:5cfed6c3a1369ca99164f4ad | 2026-07-15 |
| Digital-nomad and remote-work visa income requirements | A threshold table that preserves original currency, period and gross/net language instead of silently converting or presenting approximations as legal rules. | Ley 28/2022 consolidated text; remote-work route and SMI multiplier | 2026-07-11 |
| Countries with a family reunification route | Current family migration routes by destination with direct authority sources. | Task547 official source task547-derived-source:1665fa6e5d56b28362ed0a0e | 2026-07-15 |
| German cities with the highest disposable income per resident | German city records ranked by disposable income per capita in euros per year, retaining the source grain. | VGRdL — Kreis economic accounts | 2026-06-05 |
| German cities with the highest gigabit broadband availability | German city records ranked by published gigabit broadband availability. | Bundesnetzagentur / BMDV — Breitbandatlas | 2026-07-15 |
| German cities with the highest regional median salaries | German city records ranked by the published regional median gross monthly salary, with regional scope clearly labelled. | Bundesagentur für Arbeit — Entgelte im regionalen Vergleich (Wohnort) | 2026-06-05 |
| Largest cities in Germany | German cities ranked by the latest reusable official population observation. | Amt für Statistik Berlin-Brandenburg — SB_A01-07_00_2025m11_BE.pdf | 2026-05-31 |
| Lowest reference rents in Germany | German cities with the lowest published reusable rent-per-square-metre values; source grade and geographic grain remain visible. | Stadt Erfurt; erstellt auf Grundlage empirischer Mietspiegeldatenbasis (5/7-Spannen); Vereinbarung zwischen Beteiligten — Mietspiegel der Landeshauptstadt Erfurt 2025 (Neuerstellung) | 2026-06-14 |
| German cities with the strongest under-three childcare coverage | German city records ranked by published childcare coverage for children under three. | Destatis — Kindertagesbetreuung regional | 2026-06-05 |
| Warmest cities in Germany | German city hubs compared using their published DWD climate-normal value; rows using a Land-level normal are labelled as regional proxies. | DWD Climate Data Center — Klimanormal 1991-2020, Jahresmittel Lufttemperatur 2m (1×1 km Raster) | 2026-06-05T00:00:00Z |
| Lowest headline tax burden for remote workers | Country ranking using top personal income tax, employee social contributions, and the best active expat-friendly regime when one is explicitly documented. | ZATCA (Zakat, Tax and Customs Authority) — Zakat, Tax and Customs Authority structure (merger of GAZT and Customs in 2021) | 2026-07-11 |
| Countries with a highly skilled work route | Current highly skilled migration routes by destination, preserving the official route name and source locator. | ca_express_entry | 2026-07-15 |
| Largest cities in ImmigrationDB | The largest published city records by official population, with one source and observation date per row. | GASTAT — Asir Region / Abha governorate (Census 2022) | 2026-07-12 |
| Least densely populated cities | Published cities with the lowest official population density, retaining the source date and geographic scope. | Official SCB population density per square kilometre at municipality grain. SCB states that it uses the population figure at 31 December with the following 1 January land-area figure. | 2026-07-15 |
| Most densely populated cities | Published cities ranked by official population density using one people-per-square-kilometre metric. | Exact si-gun-gu density derived from archived official MOIS/KOSIS resident population and exact official KOSIS area row. | 2026-07-15 |
| Permanent residence routes by country | Current permanent-residence pathways by destination, without inferring eligibility across countries. | Task547 official source task547-derived-source:a921242f4c0c54c364c2148f | 2026-07-15 |
| Schengen visa requirements, fees and processing | One canonical, EU-source-backed report for the common short-stay requirements. National consulates can request additional evidence. | Applying for a Schengen visa | 2026-07-11 |
| Countries with startup or entrepreneur visa routes | Current entrepreneur and startup pathways by destination with route-specific official evidence. | Task547 official source task547-derived-source:a9692880d6a0a59944f0446c | 2026-07-15 |
| Study visa routes by country | Current study migration routes by destination, using the accepted official route registry. | Residence permit Students | 2026-07-15 |
| UK Skilled Worker visa salary threshold | A source-backed explanation of the general threshold, occupation going-rate comparison and lower-salary cases; it is not a single universal salary number. | Skilled Worker visa: Your job | 2026-07-11 |
| US cities with the highest bachelor’s-degree share | US city records ranked by the ACS share of adults with a bachelor’s degree or higher. | ACS median gross rent (Census Reporter API mirror; upstream U.S. Census Bureau ACS) | 2026-07-04 |
| US cities with the highest median household income | US city records ranked by ACS median household income in US dollars per year. | ACS total population (Census Reporter API mirror; upstream U.S. Census Bureau ACS) | 2026-07-04 |
| US cities with the highest public-transit commute share | US city records ranked by the ACS share of workers commuting by public transport. | ACS total population | 2026-07-04 |
| US cities with the highest walking commute share | US city records ranked by the ACS share of workers who walk to work. | ACS total population | 2026-07-04 |
| US cities with the lowest median gross rent | US city records ranked by ACS median gross monthly rent, without converting it into an affordability score. | ACS median gross rent (Census Reporter API mirror; upstream U.S. Census Bureau ACS) | 2026-07-04 |
| US cities with the lowest median home values | US city records ranked by ACS median owner-occupied home value. | ACS median gross rent (Census Reporter API mirror; upstream U.S. Census Bureau ACS) | 2026-07-04 |
| US cities with the lowest recorded property-crime rate | US city records ranked by reported property offences per 100,000 residents; agency coverage remains visible. | FBI CDE/UCR crime statistics | 2026-07-01 |
| US cities with the lowest rent burden | US city records ranked by the share of renter households spending at least 30% of income on rent. | ACS median gross rent (Census Reporter API mirror; upstream U.S. Census Bureau ACS) | 2026-07-04 |
| US cities with the lowest uninsured share | US city records ranked by the published share of residents without health insurance. | ACS median gross rent (Census Reporter API mirror; upstream U.S. Census Bureau ACS) | 2026-07-04 |
| US cities with the lowest recorded violent-crime rate | US city records ranked by reported violent offences per 100,000 residents; agency coverage must be read with each source. | FBI CDE/UCR crime statistics | 2026-07-01 |
| US cities with the highest work-from-home share | US city records ranked by the ACS share of workers who work from home. | ACS total population | 2026-07-04 |
| Warmest published city hubs | City records ranked by the selected annual mean temperature metric, with station or regional proxy scope kept visible. | DWD Climate Data Center — Klimanormal 1991-2020, Jahresmittel Lufttemperatur 2m (1×1 km Raster) | 2026-06-05T00:00:00Z |