Postcode · Schiedam, South Holland

Postcode 3121: Neighbourhood Kethel

On 1 January 2026, postcode 3121 in Schiedam (Kethel) had 3,530 residents. 24.9% of them (880 people) have a migration background: they were born abroad or have at least one parent who was. That is lower than Schiedam (49.4%) and lower than the national average (29.1%). The largest origin groups are Turkey (4.7%), other Europe (4.7%) and other Asia (2.7%). 47.7% of residents with a migration background were born abroad themselves. Since 2022 the share has risen by 4.0 percentage points.

Residents
3,530 on 1 January 2026
Migration background
24.9% 880 people
Born abroad
47.7% of those with a migration background
Change since 2022
+4.0 pp in share with a migration background

Map

Migration background, share of residents <15%, 15%–18%, 18%–25%, 25%–30%, 30%–45%, 45%–60%, ≥60%

Share of residents with a migration background in this postcode and its neighbours.

Where residents come from

Origin of residents on 1 January 2026, as a share of all residents.

Dutch origin and migration background

  • Dutch origin 74.9% 2,645
  • Migration background 24.9% 880

Largest origin groups

Bars show each group’s share of all residents of 3121. For comparison, the line marks Schiedam and the circle the Netherlands.

  • Turkey
    4.7% 165 people
    Schiedam 10.4% Netherlands 2.6%
  • Other Europe Europe excluding the Netherlands, Belgium, Germany and Poland
    4.7% 165 people
    Schiedam 9.7% Netherlands 5.6%
  • Other Asia Asia excluding Indonesia and Turkey
    2.7% 95 people
    Schiedam 6.2% Netherlands 5.3%
  • Other Africa Africa excluding Morocco
    2.3% 80 people
    Schiedam 4.4% Netherlands 2.3%
  • Suriname
    2.0% 70 people
    Schiedam 4.1% Netherlands 2.0%
  • Indonesia
    2.0% 70 people
    Schiedam 1.5% Netherlands 1.9%
  • Other Americas & Oceania Americas and Oceania excluding Suriname and the Dutch Caribbean
    1.6% 55 people
    Schiedam 2.0% Netherlands 1.7%
  • Morocco
    1.4% 50 people
    Schiedam 3.7% Netherlands 2.4%
  • Dutch Caribbean Aruba, Curaçao, Sint Maarten, Bonaire, Sint Eustatius and Saba
    1.3% 45 people
    Schiedam 2.8% Netherlands 1.1%
  • Poland
    1.1% 40 people
    Schiedam 3.1% Netherlands 1.4%
  • Germany
    1.0% 35 people
    Schiedam 1.2% Netherlands 1.9%
  • Belgium
    0.28% 10 people
    Schiedam 0.44% Netherlands 0.76%

First and second generation

Residents with a migration background, by whether they were born abroad themselves.

  • Born abroad (first generation) 47.7% 420
  • Born in the Netherlands (second generation) 52.8% 465

Men and women

Men
1,685
Women
1,845

Compared with all postcodes

Higher than 67% of all postcodes in the Netherlands

Trend since 1998

Share of residents with a migration background, compared with larger areas.

Measure
  • 3121
  • Schiedam
  • Netherlands
Show as table
Year 3121SchiedamNetherlands
1998 9.4%23.9%16.7%
1999 9.6%25.1%17.1%
2000 9.4%26.4%17.5%
2001 9.7%27.9%18.0%
2002 9.8%29.1%18.4%
2003 10.0%29.8%18.8%
2004 10.5%30.4%19.0%
2005 10.8%30.9%19.2%
2006 11.1%31.5%19.3%
2007 11.7%31.9%19.4%
2008 12.1%32.6%19.6%
2009 12.8%33.5%19.9%
2010 13.9%34.4%20.3%
2011 14.4%35.1%20.6%
2012 14.4%36.2%20.9%
2013 15.2%36.9%21.1%
2014 15.5%37.7%21.4%
2015 15.9%38.6%21.7%
2016 17.5%39.6%22.1%
2017 18.2%40.7%22.6%
2018 18.9%41.6%23.1%
2019 19.4%42.4%23.6%
2020 19.7%43.7%24.2%
2021 20.2%44.6%24.6%
2022 21.0%45.8%26.0%
2023 22.1%47.1%27.1%
2024 23.0%48.4%27.9%
2025 24.3%49.0%28.5%
2026 24.9%49.4%29.1%

In 2022 CBS switched to a new origin classification. Up to 2021 the line shows the old “migration background” figures; the overlap years show a small break (about +0.8 points nationally).

Nearby postcodes

Largest group
3119 Nieuwland 10,240 +1.6 pp Turkey
3122 Groenoord 9,635 +4.6 pp Turkey
3124 Spaland en Sveaparken 7,990 +1.8 pp Turkey
3123 Woudhoek 7,360 +3.6 pp Turkey
3118 Nieuwland, Kethel 6,580 +0.6 pp Turkey
3125 Industrie 295 +2.2 pp Other Europe

All figures

Number of residents per origin group on 1 January. Figures up to 2021 use the old CBS classification.

Year Total residentsDutch originMigration backgroundEuropeOutside EuropeTurkeyMoroccoSurinameIndonesiaDutch CaribbeanGermanyPolandBelgiumOther EuropeOther AfricaOther AsiaOther Americas & OceaniaWestern migration backgroundNon-Western migration background
1998 3,3002,990310150170205206520505158010151522090
1999 3,2902,970315140170305156515500157551025220100
2000 3,2902,98531015015525520602050015855101021595
2001 3,1952,8903101451603052055155502070101015210100
2002 3,1602,8453101451653002055155001580151515205100
2003 3,1452,8253151401754551550205501075101020205110
2004 3,1002,7753251501804010255515550158051020210120
2005 3,1552,8153401551753510255515600108501025225110
2006 3,1502,8053501701854010255515555159501030235115
2007 3,1752,80537016519540103055155501010001530235140
2008 3,2552,86039518021540530553055101010551535240150
2009 3,2302,81541518522550535503550510120101525245165
2010 3,2402,7904501852606515305530501015110102530255200
2011 3,2402,7704652002656510306025451015130202530270195
2012 3,2052,7404602002657015306025501010130152030275190
2013 3,1652,6854802052807020305525501515125252035275210
2014 3,1302,6454851902957520356025451515115302525270215
2015 3,1402,6405001853208525356020451010120302045265235
2016 3,2202,65556520037010525456525452010125452535285285
2017 3,1952,61558019538511025456520401510130552540275300
2018 3,1952,59060519541512020456525352010130653540280330
2019 3,2402,61063020043011530457025352515125653545285345
2020 3,5252,8306952154851303550753040255145704055305390
2021 3,5152,80571022548512540507035352515150754050315390
2022 3,4802,75073021551013040557035352015145855545300410
2023 3,5102,73577523054513545557535403010155906545310440
2024 3,5202,710810235575140405575354035101501008050––
2025 3,4752,63084524060515545607045403010155909050––
2026 3,5302,64588025563016550707045354010165809555––