Post Analysis

Claims Found

• In 1955, 95% of Brussels residents had a native Belgian background.

  90%

  Model: DeepSeek V4.1 Flash Checked on: 20/10/2026

  Reasoning

  • The claim comes from a viral comparison post contrasting Brussels in 1955 with Brussels today ("Brussels 1955: 95% native Belgian background… 2025: 21%")¹.
  • For the 1955 figure, the best historical data is the census series for the territory of the Brussels-Capital Region: foreigners made up 7.4% of the population in 1947 and 6.8% in 1961².
  • A Brussels university teaching module summarising the same series notes that "until the 1960s, the proportion of foreign residents in the Brussels-Capital Region had always remained below 10%"³.
  • Interpolating to 1955, roughly 92–93% of Brussels residents were Belgian nationals. Because naturalisation was rare in the 1950s, the share with a native Belgian background (as opposed to a foreign background) would have been in the same range — if anything slightly lower.
  • So the claim's "95%" is in the right ballpark and captures the essential fact (an overwhelming native-Belgian majority in 1955), but it is a modest overstatement of the available data (~92–93%).
  • The "2025: 21%" half of the meme is broadly consistent with official figures (21.5% of Brussels residents were "Belgians with a Belgian background" in 2026)⁴, but that part is not the claim under review.

  Overall validity: 90%

  1. End Wokeness on X: "🇧🇪 Brussels 1955: 95% native Belgian background 2025: 21% native Belgian background 🇬🇧 London 1955: 97% native British background 2025: 36% native British background 🇳🇱 Amsterdam 1955: 98% native Dutch background 2025: 40% native Dutch background 🇩🇪 Berlin 1955: 98… / X
  2. la demographie recente de la region de bruxelles-capitale
  3. BrOOC_EN: Activity 2: Immigration to Brussels from the independence of Belgium until the 1960s | UV
  4. Origin | Statbel
• In 2025, 21% of Brussels residents had a native Belgian background.

  85%

  Model: DeepSeek V4.1 Flash Checked on: 20/10/2026

  Findings

  • Statbel (Belgium's statistical office) classifies residents by "origin," and "Belgians with a Belgian background" is exactly the concept the claim describes (never held a non-Belgian nationality; both parents Belgian by first nationality)¹².
  • On 1 January 2025, the Brussels-Capital Region was 40.8% "Belgians with a foreign background" and 37.2% non-Belgians — leaving about 22% Belgians with a Belgian background³. Contemporary reporting likewise cites "only 22%" for Brussels in 2025⁴⁵.
  • By 1 January 2026, that share had slipped to 21.5% in Brussels²¹.
  • The trend confirms the direction: Brussels' Belgian-background share fell from 50.5% (2001) to 28.8% (2016) to 25.0% (2021) and then to 21.5% (2026)¹.

  Assessment

  • The claim is broadly accurate in concept and magnitude: the share of Brussels residents with a native Belgian background was ~21–22% in the mid-2020s.
  • However, the precise figure for 2025 was about 22%, not 21%; the 21.5% figure corresponds to 2026. So the claim slightly understates the 2025 value (or slightly misattributes the 2026 value to 2025).
  • This is a minor 1‑percentage‑point discrepancy — the claim is essentially correct rather than clearly false.

  Overall validity: 85%

  1. Demographics of Brussels - Wikipedia
  2. Origin | Statbel
  3. Belgium's population shows increasing diversity, with 36% having a foreign background according to Statbel | EMN
  4. Belgians with a Belgian background now make up only 22 ...
  5. Why are there so few Belgians in Brussels? Only 22% still ...
• In 1955, 97% of London residents had a native British background.

  85%

  Model: DeepSeek V4.1 Flash Checked on: 20/10/2026

  Reasoning

  • The claim is a variant of a widely shared meme about London's demographic change; the commonly cited data point is the "~97% in 1961" figure rather than 1955.
  • No census measured ethnicity in 1955 — the ethnic-group question was only introduced in 1991 — so every pre-1991 figure is an estimate derived from country-of-birth data and survey research¹².
  • The best available estimate for the earliest comparable year (1961) is about 97.7% White (2.3% non-White), which matches the claim's "97%" closely³.
  • Independent estimates put London at roughly 98–99% White British in 1951 and ~98.5% in 1961, consistent with an overwhelmingly native-British population in the mid-1950s¹.
  • Full Fact examined the related "97% in 1961" claim and said it could not verify that figure, warning that comparing country-of-birth data with modern self-reported ethnicity is misleading — though it did not call the number false⁴².
  • Caveat: "native British background" is a loose term, and 1955 specifically was never measured, so the precise figure is an estimate rather than a hard statistic. But the substance of the claim — that London in the mid-1950s was overwhelmingly (roughly 95–99%) native white British — is well supported.

  Overall validity: 85%

  1. UK Demographic Change 2026: Census Data Since 1951 | BritClock
  2. London’s white population has not ‘plummeted to 34%’ – Full Fact
  3. Demographics of London
  4. London's white population has not 'plummeted to 34%' – Full Fact
• In 2025, 36% of London residents had a native British background.

  70%

  Model: DeepSeek V4.1 Flash Checked on: 20/10/2026

  Reasoning:

  • The claim's figure (36%) closely matches the only authoritative source: the 2021 UK Census, which recorded that 36.8% of London's population identified as "White: English, Welsh, Scottish, Northern Irish or British" (White British)¹.
  • Independent fact-checker Full Fact confirms this exact figure: "36.8% of people in London identified as 'White: English, Welsh, Scottish, Northern Irish or British'" in the 2021 census².
  • Multiple sources citing the "~36%" figure for London all trace it to the 2021 census (e.g., 36.7%–36.8%)³⁴⁵.
  • The problem is the year. There is no 2025 census; the UK census runs every ten years, so no official ethnicity breakdown exists for 2025. The 36% figure is a 2021 number, not a 2025 one, and demographic trends suggest the White British share has likely declined since (commentators estimate roughly ~32% by the mid-2020s)⁶³.
  • The term "native British background" is also loose — if interpreted as "born in the UK," the figure would be ~59% (since ~41% of Londoners are foreign-born)⁶⁷, not 36%. The 36% only matches the White British ethnicity definition.
  • So the statistic is essentially correct in magnitude for the most recent official data, but it is misdated (2021, not 2025) and rests on a specific (ethnicity) definition of "native British."

  Overall validity: 70%

  1. Demographics of London
  2. London’s white population did not go from 86% to 36% in ten years – Full Fact
  3. White British percent of London by area. Total: 36.7%
  4. According to the 2021 UK Census, White British residents make ...
  5. In 1961, London was 97 % white English. In 2021 ...
  6. London's demographic change is unprecedented in ...
  7. Demography, London's Population & Geography - Trust For London | Trust for London
• In 1955, 98% of Amsterdam residents had a native Dutch background.

  Model: DeepSeek V4.1 Flash Checked on: 20/10/2026

  Reasoning

  • The claim is a specific quantitative demographic assertion about Amsterdam in 1955. Searches of the verified-claims database and the professional fact-check database returned no matching entry or review for it.
  • The wording traces to a viral social-media post (an "End Wokeness" graphic, reposted on X) that lists "Amsterdam 1955: 98% native Dutch background / 2025: 40% native Dutch background," alongside similar unsourced figures for Brussels, London and Berlin¹. This is the apparent origin of the claim, and it cites no source for the 1955 numbers.
  • The 2025 side of that graphic is roughly corroborated: CBS/OIS data put Amsterdam's population with a "heritage from the Netherlands" (autochtoon) at about 39–40% in 2025/2026²³. But the 1955 side is not corroborated anywhere.
  • The Dutch "native Dutch background / autochtoon" concept is a CBS classification that only dates from the 1990s, and comparable Amsterdam series begin around 1992 (62% autochtoon)⁴⁵. No published time series gives an "autochtoon" share for Amsterdam in 1955.
  • Available historical proxies are too coarse to settle it: nationally only ~1% of the population held non-Dutch nationality in the 1947/1960 censuses⁶, while Amsterdam has a centuries-long history of immigration (e.g., ~40% foreign-born around 1700, and post-war inflows of Indo-Europeans and, from 1955, southern-European "guest workers")⁷⁸⁹. None of these sources states a 1955 share, so I can neither confirm nor refute "98%".
  • Because no retrieved source measures the share of Amsterdam residents of "native Dutch background" in 1955, no defensible percentage can be assigned.

  Overall validity: Unknown

  1. ljuljaj Javore
  2. Gemeente Amsterdam in cijfers en grafieken | AlleCijfers.nl
  3. Ranglijst: autochtoon en migratieachtergrond van de inwoners per gemeente in Nederland | AlleCijfers.nl
  4. Amsterdam is superdivers
  5. Ras-Amsterdammer: een snel afnemende soort | NUL20
  6. Bevolkingsatlas van Nederland; demografische ontwikkelingen ...
  7. A Tale of Two Cities: Rotterdam, Amsterdam and Their ...
  8. Ons Amsterdam | Feiten en cijfers over immigratie
  9. The talk of the town: languages in Amsterdam 1507-2007
• In 2025, 40% of Amsterdam residents had a native Dutch background.

  93%

  Model: DeepSeek V4.1 Flash Checked on: 20/10/2026

  Reasoning:

  • The claim concerns Amsterdam's population by "native Dutch background" (i.e., CBS's autochtoon / "herkomst Nederland" — both parents born in the Netherlands, the inverse of having a "migration background").
  • Amsterdam's official statistics office (Onderzoek en Statistiek) reports that 59% of Amsterdammers had a migration background in 2023, i.e. ~41% had none¹.
  • For 2024, Wikipedia's compilation of CBS/OIS figures lists 375,842 Dutch natives = 40.4% of Amsterdam's population².
  • The AlleCijfers ranking (based on CBS data, stated for 2025) shows Amsterdam: 40% autochtoon / 60% with a migration background³.
  • AlleCijfers' municipality profile shows the "herkomst Nederland" share at 39% in 2026, confirming the ~40% level and the slow downward trend⁴.
  • The city's own research likewise frames people without a migration background as a declining minority, consistent with ~40% in 2025⁵.
  • Older data (2015–16) put the non-migration-background share at ~46–47%⁶, confirming a declining trend that lands right at ~40% by 2025.
  • All recent sources converge on ≈40% for 2024–2025, so the claim's figure is accurate (if anything it rounds slightly down from ~40.4%).

  Overall validity: 93%

  1. Population in figures - openresearch.amsterdam
  2. Amsterdam - Wikipedia
  3. Ranglijst: autochtoon en migratieachtergrond van de inwoners per gemeente in Nederland | AlleCijfers.nl
  4. Gemeente Amsterdam in cijfers en grafieken | AlleCijfers.nl
  5. Mijn Amsterdam
  6. Amsterdam - BAM - Becoming a Minority
• In 1955, 98% of Berlin residents had a native German background.

  85%

  Model: DeepSeek V4.1 Flash Checked on: 20/10/2026

  Based on my research, here is what I found:

  What the claim asserts: In 1955, 98% of Berlin's residents were of native German background (i.e., essentially no foreign/migrant population).

  Evidence gathered:

  • Berlin's total population in 1955 was about 3.34 million (≈2.22M in West Berlin, ≈1.14M in East Berlin)¹².
  • For the mid-1950s, the foreign ("Ausländer") population was extremely small. In West Berlin in 1961 — the earliest year for which a figure is given — there were only about 22,000 foreigners, i.e. roughly 1% of the population, and this was after the number had begun to grow. The number of foreigners in Berlin in 1964 was only ~30,000³.
  • Labour migration to (West) Berlin began only in 1964, roughly nine years later than in the rest of West Germany, so in 1955 the foreign share was even lower than the ~1% recorded for 1961³.
  • The large non-Berlin-born groups present in 1955 (e.g. ~150,000 expellees in West Berlin in 1950, and refugees from East Germany) were ethnic Germans, i.e. of German background, not foreigners³⁴.

  Assessment:

  • Every available indicator points to a foreign/migrant share of roughly 1% or less in 1955, which means the German-background share was about 98–99%.
  • The claim's figure of 98% is therefore essentially consistent with the data (if anything it is slightly conservative, since the actual German share was likely nearer 99%).

  Overall validity: 85%

  1. Einwohnerentwicklung von Berlin – Wikipedia
  2. West-Berlin – Wikipedia
  3. Berlin - Stadt der Vielfalt
  4. Refugees from the Soviet Occupation Zone/GDR in the Federal States of West Germany (1950 and 1961) | German History in Documents and Images
• In 2025, 57% of Berlin residents had a native German background.

  57%

  Model: DeepSeek V4.1 Flash Checked on: 20/10/2026

  Verification summary

  • The claim uses the standard German statistical concept of "migration background" (Migrationshintergrund): a person who is a foreign national or who has at least one parent not born with German citizenship. Its complement ("no migration background") is the closest official equivalent to "native German background."
  • Berlin's official population register (Amt für Statistik Berlin-Brandenburg) shows 42.3% of registered residents had a migration background on 31 December 2025, up from 41.1% in 2024¹.
  • That implies the share without a migration background was about 57.7% at end-2025 (100% − 42.3%)². Mid-2025 it was 58.3% (41.7% with migration background)¹.
  • Germany's Federal Statistical Office (Mikrozensus 2025) puts Berlin's migration-background share at 42.6%, i.e. ~57.4% without one — essentially the 57% in the claim³.
  • So the claim's figure of 57% is well supported: the "native German / no migration background" share of Berlin residents in 2025 was roughly 57–58%, depending on the source and reference date.
  • Minor caveat: "native German background" is a loose translation of the official "without migration background" category; the two are close but not perfectly identical.

  Overall validity: 57%

  1. Mehr Deutsche mit Migrationshintergrund
  2. Demographics of Berlin - Wikipedia
  3. Bevölkerung mit Migrationshintergrund | Die soziale Situation in Deutschland | bpb.de
• In 1955, 95% of Vienna residents had a native Austrian background.

  Model: DeepSeek V4.1 Flash Checked on: 20/10/2026

  Reasoning

  • Claims database: No matching entry for this claim; the closest results were unrelated demographic claims (Brussels minors, US voter ID), all marked UNKNOWN or off-topic.
  • Fact-check database: No published fact-check addresses this claim.
  • Concept problem: "Native Austrian background" is a modern statistical construct (comparable to Statistik Austria's Migrationshintergrund / ausländische Herkunft). It did not exist as a census category in 1955, so no source measures this exact quantity for that year.
  • What the historical data actually show:
    • A migration-history study of Vienna's population by birthplace gives the share not born in Austria as 42.8% (1880), 29.9% (1923) and 13.0% (1971)¹ — interpolating, roughly 15–20% of Viennese were foreign-born around 1955.
    • Vienna's foreign national population was very small in the postwar period (about 60,000 in 1971, ~3–4% of the city)².
    • So the share with a "native Austrian" profile depends entirely on definition: ~80–85% if measured by birthplace, ~95%+ if measured by citizenship — the claim's 95% sits at the top of that range and cannot be pinned down.
  • Conclusion: The claim is a specific quantitative assertion about a category that was not measured in 1955, and the available proxies span a wide range (roughly 80–96%) depending on definition. No source confirms the 95% figure specifically, and the ambiguity of "native Austrian background" prevents a defensible percentage from being assigned.

  Overall validity: Unknown

  1. Mosaik, Schmelztiegel, Weltstadt Wien?
  2. Zuwanderung nach Österreich
• In 2025, 51% of Vienna residents had a native Austrian background.

  10%

  Model: DeepSeek V4.1 Flash Checked on: 20/10/2026

  Verification: FALSE — the 51% figure actually refers to residents with a migration background, not a native Austrian one.

  • Austria's official statistics agency (Statistik Austria) reports that in 2025, 51.3% of Vienna's population had a migration background (1,019,300 people), defined as people whose parents were both born abroad¹².
  • That means only about 48.7% of Vienna residents did not have a migration background — i.e., the "native Austrian background" group is a slight minority, not 51%²¹.
  • The prior year's yearbook (2024 data) similarly put Vienna's migration-background share at 50.5%, again showing the ~51% number belongs to the migration-background category, not the native-Austrian one³.
  • The claim therefore inverts the real statistic: it attributes the migration-background share (~51%) to the native Austrian group, when in fact ~49% of Vienna residents are the native/no-migration-background group.
  • Independent outlets confirm the 51.3% figure is the migration-background share: "Mehr als jeder zweite Wiener hat Migrationshintergrund" (more than every second Viennese has a migration background)⁴¹.
  • Note also that other measures (e.g., Austrian citizenship ≈ 63.6%, born-abroad ≈ 40.9%) do not equal 51% either, so no reasonable definition of "native Austrian background" yields the claimed 51%⁵.

  Overall validity: 10%

  1. Neue Zahlen für Wien – Mehr als jeder zweite Wiener hat Migrationshintergrund | Heute.at
  2. Migration & Integration
  3. Statistisches Jahrbuch Migration & Integration 2025
  4. Bevölkerungsaustausch in Wien: Mehr als jeder Zweite mit ...
  5. Facts and figures on migration 2025 - Viennese population - City of Vienna
• In 1955, 97% of Stockholm residents had a native Swedish background.

  80%

  Model: DeepSeek V4.1 Flash Checked on: 20/10/2026

  Based on my research, here is what I found:

  • The claim comes from a viral social-media post contrasting 1955 and 2025 demographics across several European cities¹.
  • Neither the verified-claims database nor professional fact-check archives contain any review of the 1955 Stockholm figure specifically (fact-checks of similar "great replacement" city claims concern later years, e.g. 2024–2025)².
  • Nationally, Sweden's foreign-born population in 1950 was small: one source puts it at roughly 200,000 people, ~2.8% of the population³, while another states only about 1% of Swedes were foreign-born in 1950⁴. Either way, roughly 97–99% of Sweden's population in the early 1950s was native-born.
  • Stockholm, as the capital, had a somewhat larger immigrant population than the national average, but remained overwhelmingly homogeneous. Historians note that "until the 1970s, immigrants were so few that it is not possible on the district or parish level to find special areas of foreign settlement," and foreign citizens were still only ~7% of the city as late as 1976⁵.
  • Combining these, Stockholm's "native Swedish background" share in 1955 was plausibly in the mid-to-high 90s — broadly consistent with the claimed 97%, though no source documents the exact figure for the city, and the capital was likely marginally more diverse than the national average.

  The claim is approximately correct in magnitude (Stockholm in 1955 was overwhelmingly native Swedish), but the precise 97% figure is not directly documented and may slightly overstate the city's homogeneity relative to the national figure.

  Overall validity: 80%

  1. 40% native Dutch background 🇩🇪 Berlin 1955: 98 ...
  2. Fact Check: Migrants are not the majority in London, Brussels and Amsterdam
  3. Invandrades nettobidrag till de offentliga finanserna 1983– ...
  4. Sveriges befolkning, migration och integration | Individers och gruppers identitet och relationer | Samhällskunskap | SO-rummet
  5. the european metropolis 1920-2000
• In 2025, 65% of Stockholm residents had a native Swedish background.

  85%

  Model: DeepSeek V4.1 Flash Checked on: 20/10/2026

  I now have sufficient evidence. Let me compile the findings.

  Reasoning:

  • The claim concerns "Stockholm residents" with a "native Swedish background" — i.e., the complement of Statistics Sweden's (SCB) "foreign background" category (foreign-born, or born in Sweden with two foreign-born parents).

  • SCB/Stockholm city data for Stockholm municipality:

    • 2021: 34.4% foreign background → 65.6% Swedish background¹
    • 2023: 34.9% foreign background (344,874 of 988,943) → 65.1% Swedish background²
    • 2024: 35.2% foreign background (350,149 persons) → 64.8% Swedish background³

  • The trend is a slow, steady rise in the foreign-background share (~+0.3 pp/year), so the 2025 figure for the municipality would be roughly 64–65% Swedish background. This is essentially the "65%" stated in the claim.

  • Caveats: "Stockholm" most plausibly means the municipality (county figures would be a bit lower, ~60–62%); and if "native Swedish background" were read very narrowly as "born in Sweden to two Swedish-born parents" (excluding the mixed group), the figure would be lower (~55%). But the round 65% matches SCB's standard "svensk bakgrund" category, and the underlying data support it. The exact 2025 municipal statistic (published March 2026) was not located directly, but the 2023–2024 figures (65.1% and 64.8%) bracket the claim closely.

  • Net: the claim is approximately correct, with a minor imprecision (the true 2025 value is likely just under 65%).

  Overall validity: 85%

  1. Stockholm - Wikipedia
  2. Statistisk årsbok för Stockholm 2025
  3. Befolkningsöversikt 2024