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The population is shrinking, while it grows in Leeuwarden. Homes cost more than the average in the municipality of Leeuwarden, and registered crime per resident is lower.
350 residents,
Get a full report on value, costs, energy and surroundings.
Compared with the municipality of Leeuwarden · newest year available
© Kadaster / PDOK, CBS
The average WOZ value in Koarnjum is €270,000, 3% higher than in Leeuwarden (€263,000). Between 2024 and 2025 the average WOZ value rose 6%, the same as in Leeuwarden. 69% of the homes are owner-occupied, 18 percentage points more than in Leeuwarden (51%).
The average WOZ value rose 6% between 2024 and 2025, to €270,000.
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: ~€299 per month (excluding mortgage and energy)
Typical home here, before mortgage and energy
Model estimates, not bills.
For this home, Leeuwarden's OZB, sewage and waste levies rank 74th 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
Koarnjum has the 3rd-lowest WOZ value of the 9 buurten in Dokkumer Ie e.o..
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: €270,000 average WOZ value.
| Value | Dwellings | Aged 65+ | |
|---|---|---|---|
| Koarnjum | 270,000 | 162 | – |
| Lekkum | 260,000 | 187 | – |
| Snakkerburen | 353,000 | 90 | – |
| Blitsaerd | 658,000 | 440 | – |
| Jelsum | 299,000 | 84 | – |
| Buitengebied Jelsum | 364,000 | 65 | – |
| Buitengebied Koarnjum | 475,000 | 29 | – |
| Britsum | 270,000 | 401 | – |
| Buitengebied Britsum | 406,000 | 20 | – |
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 69% of dwellings.
CBS publishes this as a share of the dwelling stock, not a count.
Source: CBS Kerncijfers wijken en buurten (KWB) 2025
93% 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
35% of dwellings were built between 1975 and 1991, against 21% in the municipality of Leeuwarden.
Based on 162 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, 17 crimes per 1,000 residents were registered in Koarnjum, 69% lower than in Leeuwarden (54). Since 2024 the registered rate per 1,000 residents rose 100%, against a fall of 1% in Leeuwarden. Crimes are counted where they happen, not where the offender lives.
In 2025, Koarnjum registered 17 crimes per 1,000 residents, against 54 in the municipality of Leeuwarden.
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, Koarnjum registered 17 crimes per 1,000 residents, against 54 in the municipality of Leeuwarden.
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 Koarnjum is 'Violence and threats': 5.6 per 1,000 residents in 2025, against 5.6 in the municipality of Leeuwarden.
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
An estimated 75% of adults in Koarnjum rate their own health as good, 2 percentage points more than in Leeuwarden. Fewer adults report anxiety or depression (39% against 46%), fewer feel lonely (44% against 48%), fewer meet the physical activity guideline (49% against 53%) and fewer smoke (17% against 19%). Agricultural land is the largest land use in Koarnjum, covering 72% of the area, against 69% in Leeuwarden. Green space such as parks, sports fields, forest and nature covers 9% of the area, in line with the 9% in Leeuwarden.
An estimated 75% of adults rate their own health as good, against 73% in the municipality of Leeuwarden (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
9% of the area is green (parks, sport, nature), against 9% in the municipality of Leeuwarden.
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 primary school lies here at an average road distance of 1200 m.
| Distance | Value | |
|---|---|---|
| Large supermarket | 2,400 m | – |
| GP practice | 2,500 m | – |
| Primary school | 1,200 m | – |
| Daycare | 1,200 m | – |
| Large supermarkets | – | 0 |
| GP practices | – | 0 |
| Daycares | – | 0 |
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
Koarnjum has 350 inhabitants (2026), or 1,012 per km² (85% higher than in Leeuwarden). Between 2024 and 2026 the population fell 1%, against a rise of 1% in Leeuwarden. In the 2025 House of Representatives (Tweede Kamer) election, turnout in the municipality of Leeuwarden was 78%, in line with the national figure. Of the parties that are largest nationally, GROENLINKS / Partij van de Arbeid (PvdA) had the highest share there: 18% of the vote, against 13% nationally. Election results exist only per municipality, so these are the municipality's figures.
The population shrank 1% between 2024 and 2026, to 350.
Source: CBS Kerncijfers wijken en buurten (KWB) 2026
With 1,012 residents per km², this buurt is 85% more densely populated than the municipality of Leeuwarden.
Source: CBS Kerncijfers wijken en buurten (KWB) 2026
In 2025, 14.1 children were born per 1,000 residents; almost no one died.
Source: CBS Kerncijfers wijken en buurten (KWB) 2025
29% of residents are between 25 and 45.
Source: CBS Kerncijfers wijken en buurten (KWB) 2026
44% of residents are married.
Source: CBS Kerncijfers wijken en buurten (KWB) 2026
90% of residents have Dutch origin.
Source: CBS Kerncijfers wijken en buurten (KWB) 2026
60% 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 Leeuwarden; there is no result per buurt or wijk. At the general election (Tweede Kamer) of 29 October 2025, 78% of eligible voters in Leeuwarden voted. The largest party was GROENLINKS / Partij van de Arbeid (PvdA) with 18% 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
Koarnjum has an average of 1.2 cars per household, 33% higher than in Leeuwarden (0.9). 16% of cars run on something other than petrol (diesel, LPG or electricity, hybrids included), 8 percentage points less than in Leeuwarden (24%).
Nijverheid en energie is the largest sector, with 10 establishments.
Source: CBS Kerncijfers wijken en buurten (KWB) 2025
16% of passenger cars do not run on petrol (diesel, LPG, electric etc.), against 24% in the municipality of Leeuwarden (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 16% between 2024 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, 185 passenger cars and 30 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
95% of addresses are residential; the largest other use is assembly (4%).
Based on 170 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
7% multi-family dwellings, against 37% nationally.
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) 2025
| Blitsaerd | 1,300 | €658,000 | 4 |
| Buitengebied Koarnjum | 70 | €475,000 | – |
| Buitengebied Britsum | 50 | €406,000 | – |
| Buitengebied Jelsum | 125 | €364,000 | – |
| Snakkerburen | 195 | €353,000 | – |
| Jelsum | 170 | €299,000 | – |
| Britsum | 875 | €270,000 | 11 |
| Lekkum | 390 | €260,000 | 25 |
| Buitengebied Lekkum en Miedum | 60 | – | – |