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The population is shrinking, while it grows in Heiloo. Homes cost less than the average in the municipality of Heiloo, and registered crime per resident is lower.
2,155 residents,
Get a full report on value, costs, energy and surroundings.
Compared with the municipality of Heiloo · newest year available
© Kadaster / PDOK, CBS
The average WOZ value in Oosterzij is €529,000, 3% lower than in Heiloo (€544,000). Between 2021 and 2025 the average WOZ value rose 36%, against a rise of 41% in Heiloo. 70% of the homes are owner-occupied, 4 percentage points less than in Heiloo (74%).
The average WOZ value rose 36% between 2021 and 2025, to €529,000.
The WOZ value as struck on 1 January of the year before the KWB edition.
Source: CBS Kerncijfers wijken en buurten (KWB) 2025
Modelled ownership costs for a typical dwelling here: ~€305 per month (excluding mortgage and energy)
Typical home here, before mortgage and energy
Model estimates, not bills.
For this home, Heiloo's OZB, sewage and waste levies rank 79th of 334 gemeenten, cheapest first.
Water board, maintenance and insurance are estimated from national rates and the home's value and size, so they aren't compared.
Source: Municipal levies + CBS 2026
Oosterzij has the highest WOZ value of the 3 buurten in Ypestein.
Average WOZ value from the Netherlands down to this area, and its rank within its own group (e.g. buurten within the same wijk). Provincie is omitted: KWB publishes no province rows to average.
Source: CBS Kerncijfers wijken en buurten (KWB)
Here: €529,000 average WOZ value.
| Value | Dwellings | Aged 65+ | |
|---|---|---|---|
| Oosterzij | 529,000 | 1,009 | – |
| Willibrord | 200,000 | 95 | – |
| Zuid Oost | 516,000 | 840 | – |
Each circle is an area: position by average WOZ value, size by dwelling count. The 65-and-over share (pct_65_plus) travels on every point but is not yet drawn as a second axis.
Source: CBS Kerncijfers wijken en buurten (KWB)
The largest category is owner-occupied, at 70% of dwellings.
CBS publishes this as a share of the dwelling stock, not a count.
Source: CBS Kerncijfers wijken en buurten (KWB) 2025
63% of the dwelling stock is single-family homes.
CBS publishes this as a share of the dwelling stock, not a count.
Source: CBS Kerncijfers wijken en buurten (KWB) 2025
36% of dwellings were built between 1992 and 2005, against 13% in the municipality of Heiloo.
Based on 1,019 dwellings with a registered construction year in the BAG (verblijfsobjecten whose pand has no usable bouwjaar, such as 1005 or 9999, are excluded).
Source: Kadaster BAG (bag-light.gpkg) 2026-09-01
In 2025, 11 crimes per 1,000 residents were registered in Oosterzij, 56% lower than in Heiloo (25). Since 2021 the registered rate per 1,000 residents fell 52%, against a fall of 15% in Heiloo. Crimes are counted where they happen, not where the offender lives.
In 2025, Oosterzij registered 11 crimes per 1,000 residents, against 25 in the municipality of Heiloo.
Crime is counted where it happens and divided by the number of residents, so places with many visitors — city centres, nightlife, stations — score higher.
Source: CBS/Politie geregistreerde misdrijven (47018NED) 2025
In 2025, Oosterzij registered 11 crimes per 1,000 residents, against 25 in the municipality of Heiloo.
Registered crime, not all crime — CBS/Politie 47018NED. A year without a matching population figure (KWB) is left out.
Source: CBS/Politie geregistreerde misdrijven (47018NED) 2025
The largest category in Oosterzij is 'Fraud and scams': 5.1 per 1,000 residents in 2025, against 3.2 in the municipality of Heiloo.
Four categories are structurally withheld at buurt level (sex offences, child pornography, child prostitution, other integrity offences); the gap with the published total is shown under 'other'.
Source: CBS/Politie geregistreerde misdrijven (47018NED) 2025
Home burglary 2023-2025: 2.0 per 1,000 dwellings a year on average, against 2.8 in the municipality of Heiloo.
Averaged over 3 years (2023-2025) to dampen year-to-year noise at low counts.
Source: CBS/Politie geregistreerde misdrijven (47018NED) 2025
In 2024, police in Oosterzij registered 3 traffic accidents, of which 0 with injury and none fatal.
Registered accidents (BRON, Rijkswaterstaat); material-damage-only accidents have not been systematically registered since roughly 2010 and are not comparable between areas. This area shows only accidents with an exactly known location (roughly 80-85% of all registered accidents); the rest is known only at street, intersection or gemeente level. The comparison with the gemeente therefore also uses only the gemeente's exactly-located accidents, which is why that figure is lower than on the gemeente's own page.
Source: BRON — Bestand geRegistreerde Ongevallen Nederland (Rijkswaterstaat) 2024
An estimated 78% of adults in Oosterzij rate their own health as good, 1 percentage point more than in Heiloo. Fewer adults meet the physical activity guideline (54% against 57%) and fewer feel lonely (41% against 42%), but more are overweight (46% against 44%). Built-up land is the largest land use in Oosterzij, covering 46% of the area, against 29% in Heiloo. Green space such as parks, sports fields, forest and nature covers 12% of the area, 4 percentage points below the 16% in Heiloo.
An estimated 78% of adults rate their own health as good, against 77% in the municipality of Heiloo (2024).
An RIVM model estimate (small-area estimation from the 2024 Health Monitor for Adults and Elderly), not a direct tabulation — even a buurt that was not itself surveyed gets an estimate. Figures cover adults aged 18 and over.
Source: RIVM/CBS Gezondheidsmonitor Volwassenen en Ouderen (kleine-gebieden-schatting) 2024
12% of the area is green (parks, sport, nature), against 16% in the municipality of Heiloo.
Every share is calculated as a percentage of the TOTAL area (land and water together, peiljaar 2022); water is therefore one of the slices itself, not a separate whole. Green is the sum of recreational terrain (parks, sport fields, allotments, day recreation) and natural terrain (forest, open natural terrain) — agricultural land is not counted as green here.
Source: CBS Bodemgebruik (86211NED) 2022
A daycare lies here at an average road distance of 400 m.
| Distance | Value | |
|---|---|---|
| Large supermarket | 800 m | – |
| GP practice | 700 m | – |
| Primary school | 700 m | – |
| Daycare | 400 m | – |
| Large supermarkets | – | 0.7 |
| GP practices | – | 1 |
| Daycares | – | 3.2 |
Average road distance from every address in this buurt to the nearest amenity, and the average count within 1 km — a buurt average, not a distance from one address.
Source: CBS proximity statistics 2025
Oosterzij has 2,155 inhabitants (2026), or 2,426 per km² (84% higher than in Heiloo). Between 2021 and 2026 the population fell 1%, against a rise of 2% in Heiloo. In the 2025 House of Representatives (Tweede Kamer) election, turnout in the municipality of Heiloo was 87%, 9 percentage points above the national 78%. Of the parties that are largest nationally, D66 had the highest share there: 24% of the vote, against 17% nationally. Election results exist only per municipality, so these are the municipality's figures.
The population shrank 1% between 2021 and 2026, to 2,155.
Source: CBS Kerncijfers wijken en buurten (KWB) 2026
With 2,426 residents per km², this buurt is 84% more densely populated than the municipality of Heiloo.
Source: CBS Kerncijfers wijken en buurten (KWB) 2026
In 2025, 4.7 children were born per 1,000 residents; 4.7 died per 1,000.
Source: CBS Kerncijfers wijken en buurten (KWB) 2025
32% of residents are between 45 and 65.
Source: CBS Kerncijfers wijken en buurten (KWB) 2026
46% of residents are never married.
Source: CBS Kerncijfers wijken en buurten (KWB) 2026
84% of residents have Dutch origin.
Source: CBS Kerncijfers wijken en buurten (KWB) 2026
42% of residents have a havo, vwo or mbo2-4 level education.
Source: CBS Kerncijfers wijken en buurten (KWB) 2024
These figures are for the whole municipality of Heiloo; there is no result per buurt or wijk. At the general election (Tweede Kamer) of 29 October 2025, 87% of eligible voters in Heiloo voted. The largest party was D66 with 24% of the valid votes.
Official election result (Kiesraad), top 8 parties by national vote count plus 'Other'; share of valid votes. A voter may vote at any polling station in their own gemeente; there is therefore no reliable buurt- or wijk-level result. This figure is the whole gemeente's own result.
Source: Kiesraad — Verkiezingsuitslag Tweede Kamer (data.overheid.nl) TK2025
Oosterzij has an average of 1.2 cars per household, 9% higher than in Heiloo (1.1). 24% of cars run on something other than petrol (diesel, LPG or electricity, hybrids included), 1 percentage point less than in Heiloo (25%).
Zakelijke dienstverlening is the largest sector, with 115 establishments.
Source: CBS Kerncijfers wijken en buurten (KWB) 2025
24% of passenger cars do not run on petrol (diesel, LPG, electric etc.), against 25% in the municipality of Heiloo (2025).
CBS splits passenger cars into 'petrol' and 'other fuel' only. That second category bundles diesel, LPG, electric (including hybrid), hydrogen, alcohol, LNG and CNG together — CBS publishes no separate electric-car count per buurt, wijk or gemeente, so this is not the same as an 'electric share'.
Source: CBS Kerncijfers wijken en buurten (KWB) 2025
The share of passenger cars not running on petrol went from 17% to 24% between 2021 and 2025.
See the 'Passenger cars by fuel type' card for what 'other fuel' covers — this is not the share of electric cars.
Source: CBS Kerncijfers wijken en buurten (KWB) 2025
In 2025, 1,195 passenger cars and 105 motorcycles were registered here.
At this level CBS publishes only passenger cars and motorcycles, no vans or trucks.
Source: CBS Kerncijfers wijken en buurten (KWB) 2025
91% of addresses are residential; the largest other use is industrial (4%).
Based on 1,120 verblijfsobjecten in use. An object with several registered uses (e.g. a flat above a shop) is counted under each of them, so the shares can add up to more than 100%.
Source: Kadaster BAG (bag-light.gpkg) 2026-09-01
2,426 residents per km²: 4.5 times as densely populated as the Dutch average.
The 5 characteristics that differ most from the national average, ranked by log ratio (so a halving and a doubling count as equally different); the shown percentage is the ordinary difference against the Netherlands.
Source: CBS Kerncijfers wijken en buurten (KWB) 2026
| Zuid Oost | 1,705 | €516,000 | 16 |
| Willibrord | 255 | €200,000 | 136 |
| Oude Werf | 0 | – | – |