district in Westland
De Lier
De Lier has 9 neighbourhoods with 13,305 residents in total.
De Lier is a Westland glasshouse village, 13,305 residents across nine neighbourhoods from Bleyenburg to Molensloot. Safety stands out at 8.8, and the overall lands high at 7.9. Wealth follows on 6.1 and amenities on 6.9. Quiet and nature trail most clearly at 3.6, in keeping with the dense horticultural surroundings. A safe village in the glass-covered landscape, but busier than you'd expect.
no. 2 of the 10 districts of Westland
Short answer: De Lier scores 7.8 as a district of Westland, no. 2 of the 10 districts of Westland. Its strongest neighbourhood is Bleyenburg (9.4), the worst Bedrijventerrein Westerlee (3.3). The district has 9 neighbourhoods with 13,305 residents in total.
Key figures for De Lier
- residents
- 13,305
- neighbourhoods
- 9
- km² of land
- 14.1
How De Lier scores
Do some of these matter more to you than others?
The figures ⌄Safety
Registered crimes per 1,000 people present per year: residents plus business activity. Figures for small neighbourhoods are smoothed.
In 2025, 267 crimes were recorded here. The figures above are per 1,000 people present (residents + businesses).
Tick = Dutch median
The safest neighbourhoods in Westland →The most dangerous neighbourhoods in Westland →
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
The age profile of De Lier looks much like that of the average Dutch neighbourhood.
Age profile
- 0–1516%
NL median 14%
- 15–2512%
NL median 11%
- 25–4526%
NL median 22%
- 45–6527%
NL median 28%
- 65+20%
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
2.3 — around the average
NL median 2.3
Single-person households
32% — around the average
NL median 31%
Households with children
37% — around the average
NL median 35%
Residents per km²
6,000 — 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. Average of the neighbourhoods in De Lier, weighted by population.
The best and worst neighbourhoods of De Lier
The same total grade, the same yardstick — from the top to the bottom of De Lier.
Neighbourhoods in De Lier
Sorted by total grade