neighbourhood in Katwijk
Zanderij
3,220 residents · postal code 2224 · Part of Katwijk aan den Rijn, Katwijk
Safe, but not spacious
Most households in Zanderij have children and one in ten residents is 65 or over. That is a markedly young composition, and together with a primary school eight hundred metres away it carries the 8.9 for families.
The wealth pillar adds up on every component at once: property value well above the national median, the share of high incomes above it, the share of low incomes below it, and the social assistance rate far below the national level. That is rarer than it sounds — usually one component points the other way.
The quiet and nature pillar is the exception, and the cause is measurable: noise exposure here is well above the national median and the tree canopy below it. Among the offences, burglary stands out at a fraction of the national middle; only vandalism edges above.
- no. 1,237 of 13,075 neighbourhoods with a grade
- no. 12 of 37 in Katwijk
How Zanderij scores
Do some of these matter more to you than others?
Is Zanderij a safe neighbourhood?
For 2025, Zanderij comes out at 17 recorded crimes per 1,000 people present; the national middle is 24. That is low: Zanderij is among the 20% of Dutch neighbourhoods with the fewest recorded crimes.
The figures ⌄Safety
Registered crimes per 1,000 people present per year: residents plus business activity. Figures for small neighbourhoods are smoothed.
In 2025, 59 crimes were recorded here. The figures above are per 1,000 people present (residents + businesses).
Tick = Dutch median
The safest neighbourhoods in Katwijk →The most dangerous neighbourhoods in Katwijk →
The figures ⌄Amenities
Average distance to everyday amenities, compared with the Dutch median.
Tick = Dutch median
The figures ⌄Wealth & income
What the homes are worth, what residents earn and how many homes stand empty. It describes the area, not the people living in it.
Not counted
Part of this score's subject, but not part of the grade.
Tick = Dutch median
The figures ⌄Quiet & nature
How tightly the addresses sit together, how much noise there is, and how much green, trees and water surround it.
Not counted
Part of this score's subject, but not part of the grade.
Not part of the grade: air quality varies mostly between regions, barely between neighbourhoods within one municipality. WHO guideline: 5 µg/m³. Calculated annual mean, RIVM 2024.
Tick = Dutch median
The figures ⌄Families
How practical this area is with children: distance to school and childcare, and how many children already live here.
Tick = Dutch median
Who lives here
Zanderij has strikingly many young people aged 15 to 25: 18%, against 11% in the average Dutch neighbourhood.
Age profile
- 0–1518%
NL median 14%
- 15–2518%
NL median 11%
- 25–4523%
NL median 22%
- 45–6532%
NL median 28%
- 65+10%
NL median 22%
Share of residents per age group (CBS, 2025). All five bars share one scale, so their lengths can be compared with each other.
Average household size
2.9 — larger than average
NL median 2.3
Single-person households
22% — fewer than average
NL median 31%
Households with children
55% — far more than average
NL median 35%
Residents per km²
6,697 — far more densely populated than average
NL median 2,364
Tick = Dutch median. Households with children counts towards Families, population density towards Quiet & nature; the other figures here get no grade.
Frequently asked questions
Is Zanderij a safe neighbourhood?
For 2025, Zanderij comes out at 17 recorded crimes per 1,000 people present; the national middle is 24. That is low: Zanderij is among the 20% of Dutch neighbourhoods with the fewest recorded crimes. The figure is about what the police record, not about the people who live there.
How much crime is there in Zanderij?
In Zanderij the police recorded 59 crimes in 2025: theft, burglary, violence and vandalism combined. The comparison figure above (17 per 1,000) is not simply that count divided by the number of residents: we count residents plus workplaces, so a shopping street or station is not unfairly penalised, and for small counts we pull the figure towards the national average — otherwise a single incident would make a small neighbourhood look unsafe.
How is the grade for Zanderij calculated?
Zanderij scores 9.3 as its total score. That grade is a national position: we weigh five equally heavy scores — safety, amenities, wealth & income, quiet & nature and families — and see where Zanderij lands among every neighbourhood in the Netherlands. So it is not the mean of the five grades, but a place in the queue. All from open data published by CBS and the police.
The best and worst neighbourhoods of Katwijk
Same total grade, same yardstick — from the top to the bottom of Katwijk.
Highest grades
Lowest grades
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