Postcode · Uithoorn, North Holland

Postcode 1422: Neighbourhoods Zijdelwaard and Legmeer

On 1 January 2026, postcode 1422 in Uithoorn (Zijdelwaard and Legmeer) had 15,505 residents. 44.0% of them (6,820 people) have a migration background: they were born abroad or have at least one parent who was. That is higher than Uithoorn (39.5%) and higher than the national average (29.1%). The largest origin groups are other Asia (14.0%), other Europe (6.6%) and Morocco (4.5%). 60.6% of residents with a migration background were born abroad themselves. Since 2022 the share has risen by 6.2 percentage points.

Residents: 15,505 on 1 January 2026
Migration background: 44.0% 6,820 people
Born abroad: 60.6% of those with a migration background
Change since 2022: +6.2 pp in share with a migration background

Migration background, share of residents

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

56% 44%

Dutch origin 56.0% 8,685
Migration background 44.0% 6,820

Largest origin groups

Bars show each group’s share of all residents of 1422. For comparison, the line marks Uithoorn and the circle the Netherlands.

Other Asia Asia excluding Indonesia and Turkey

14.0% 2,175 people

Uithoorn 12.4% Netherlands 5.3%
Other Europe Europe excluding the Netherlands, Belgium, Germany and Poland

6.6% 1,025 people

Uithoorn 6.1% Netherlands 5.6%
Morocco

4.5% 705 people

Uithoorn 3.6% Netherlands 2.4%
Other Africa Africa excluding Morocco

4.0% 620 people

Uithoorn 3.5% Netherlands 2.3%
Suriname

3.2% 490 people

Uithoorn 2.9% Netherlands 2.0%
Poland

2.8% 430 people

Uithoorn 2.6% Netherlands 1.4%
Other Americas & Oceania Americas and Oceania excluding Suriname and the Dutch Caribbean

2.5% 395 people

Uithoorn 2.3% Netherlands 1.7%
Indonesia

2.4% 375 people

Uithoorn 2.3% Netherlands 1.9%
Turkey

1.5% 225 people

Uithoorn 1.4% Netherlands 2.6%
Germany

1.2% 180 people

Uithoorn 1.3% Netherlands 1.9%
Dutch Caribbean Aruba, Curaçao, Sint Maarten, Bonaire, Sint Eustatius and Saba

1.0% 150 people

Uithoorn 0.85% Netherlands 1.1%
Belgium

0.35% 55 people

Uithoorn 0.37% Netherlands 0.76%

First and second generation

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

61% 39%

Born abroad (first generation) 60.6% 4,130
Born in the Netherlands (second generation) 39.4% 2,690

Men and women

Men: 7,515
Women: 7,990

Compared with all postcodes

Netherlands 29.1% 1422 44.0%

Higher than 88% of all postcodes in the Netherlands

Trend since 1998

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

Show

Measure % Residents

New CBS classification

44.0%

1422
Uithoorn
Netherlands

Show as table

Year	1422	Uithoorn	Netherlands
1998	19.9%	16.9%	16.7%
1999	20.2%	17.1%	17.1%
2000	20.7%	17.4%	17.5%
2001	20.8%	17.4%	18.0%
2002	21.2%	17.7%	18.4%
2003	21.7%	18.1%	18.8%
2004	21.7%	18.3%	19.0%
2005	22.3%	18.7%	19.2%
2006	22.3%	18.8%	19.3%
2007	22.9%	19.3%	19.4%
2008	23.1%	19.5%	19.6%
2009	23.6%	20.0%	19.9%
2010	24.1%	20.8%	20.3%
2011	24.6%	21.3%	20.6%
2012	25.0%	21.8%	20.9%
2013	25.8%	22.4%	21.1%
2014	26.1%	22.9%	21.4%
2015	27.4%	24.0%	21.7%
2016	28.6%	25.2%	22.1%
2017	29.2%	25.8%	22.6%
2018	30.5%	27.1%	23.1%
2019	31.9%	28.4%	23.6%
2020	33.0%	29.5%	24.2%
2021	34.9%	31.2%	24.6%
2022	37.8%	34.3%	26.0%
2023	39.9%	36.1%	27.1%
2024	41.3%	37.2%	27.9%
2025	42.9%	38.6%	28.5%
2026	44.0%	39.5%	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
1187 Bovenkerk - Westwijk Noord, Westwijk Zuid	51.5%	19,215	+5.3 pp	Other Asia
1188 Waardhuizen, Middenhoven	50.5%	7,255	+2.9 pp	Other Asia
1421 Thamerdal, Legmeer	40.6%	6,195	+3.7 pp	Other Asia
1424 Meerwijk	22.5%	5,040	+6.5 pp	Other Europe
1427 Amstelhoek	19.4%	955	+3.2 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 residents	Dutch origin	Migration background	Europe	Outside Europe	Turkey	Morocco	Suriname	Indonesia	Dutch Caribbean	Germany	Poland	Belgium	Other Europe	Other Africa	Other Asia	Other Americas & Oceania	Western migration background	Non-Western migration background
1998	12,215	9,790	2,425	815	1,610	25	230	140	520	60	300	25	70	420	150	390	95	1,570	855
1999	12,155	9,705	2,450	815	1,625	35	240	155	515	65	295	35	75	410	155	355	105	1,535	910
2000	12,145	9,630	2,520	815	1,705	40	285	150	505	75	295	40	75	405	180	355	115	1,535	985
2001	12,010	9,510	2,500	810	1,695	40	320	150	475	70	290	30	65	425	180	340	120	1,465	1,040
2002	11,965	9,425	2,535	825	1,710	35	330	135	470	60	295	35	65	430	190	365	125	1,475	1,065
2003	11,940	9,355	2,590	830	1,755	45	350	145	450	70	300	35	65	430	210	365	120	1,460	1,130
2004	11,955	9,350	2,600	830	1,775	45	355	150	440	65	295	45	60	430	210	380	130	1,440	1,160
2005	11,950	9,280	2,665	845	1,820	45	390	180	430	70	285	70	55	435	215	375	115	1,420	1,245
2006	11,860	9,215	2,645	840	1,800	35	400	180	430	70	285	80	55	420	215	360	110	1,420	1,230
2007	11,980	9,240	2,740	885	1,850	30	430	190	425	70	285	90	65	445	240	360	105	1,450	1,290
2008	12,455	9,570	2,880	955	1,925	30	435	190	435	70	295	115	65	480	255	375	135	1,520	1,360
2009	12,575	9,610	2,970	980	1,995	40	430	210	440	75	290	130	60	500	265	400	135	1,535	1,435
2010	12,835	9,745	3,095	1,025	2,060	50	455	225	435	70	290	170	55	510	290	395	140	1,560	1,530
2011	12,905	9,735	3,170	1,055	2,115	55	470	225	415	80	295	195	60	505	315	395	160	1,570	1,600
2012	12,955	9,715	3,245	1,075	2,165	65	470	245	420	85	290	210	50	525	305	405	170	1,600	1,645
2013	12,860	9,540	3,320	1,125	2,200	60	480	255	420	95	280	250	55	540	305	415	170	1,635	1,680
2014	12,695	9,380	3,315	1,110	2,210	60	495	245	415	100	270	265	45	530	310	415	170	1,605	1,715
2015	12,870	9,345	3,525	1,190	2,335	70	515	270	415	105	265	310	45	570	340	440	180	1,680	1,850
2016	13,055	9,320	3,735	1,270	2,465	90	525	315	415	100	260	380	50	580	365	465	190	1,770	1,970
2017	12,990	9,200	3,790	1,295	2,490	90	520	290	400	95	255	385	50	605	350	540	205	1,785	2,005
2018	13,160	9,145	4,015	1,360	2,655	95	520	320	395	90	245	405	50	660	365	660	210	1,840	2,170
2019	13,115	8,925	4,190	1,430	2,760	110	495	320	380	100	245	445	45	695	375	775	205	1,905	2,280
2020	13,255	8,885	4,370	1,440	2,935	115	510	315	380	105	225	425	50	740	380	900	230	1,920	2,450
2021	14,075	9,165	4,910	1,475	3,430	135	570	360	400	125	210	435	50	780	415	1,165	260	1,985	2,925
2022	14,740	9,170	5,570	1,495	4,075	170	665	420	420	140	210	470	50	765	480	1,455	320	2,010	3,455
2023	15,005	9,020	5,990	1,610	4,380	185	680	445	415	140	200	485	50	875	505	1,660	340	2,145	3,750
2024	15,310	8,990	6,320	1,620	4,700	215	690	475	395	150	190	485	50	895	545	1,885	345	–	–
2025	15,545	8,880	6,665	1,685	4,980	210	725	500	390	150	185	455	50	995	580	2,065	365	–	–
2026	15,505	8,685	6,820	1,685	5,130	225	705	490	375	150	180	430	55	1,025	620	2,175	395	–	–

Definitions and method · CBS 85640NED (2022–2026), 83503NED (1998–2023)