• Kocaeli neighbourhood boundaries map: 487 mahalle and köy polygons in 12 districts, Türkiye

Kocaeli Neighbourhood Boundaries (Mahalle & Köy): Shapefile & GeoPackage

Kocaeli Neighbourhood Boundaries (Mahalle & Köy): Shapefile & GeoPackage

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Kocaeli Neighbourhood Boundaries (Mahalle & Köy)

Kocaeli neighbourhood boundaries: 487 polygons for the neighbourhoods (mahalle) and villages (köy) in the 12 districts (ilçe) of Kocaeli province (il), Türkiye (Turkey). The layer is sold per format, GeoPackage (gpkg) or Shape file at €9.90 each, as a digital download in EPSG:4326.

As a metropolitan province (büyükşehir), Kocaeli has one district municipality (ilçe belediyesi) in each of its 12 districts, and every neighbourhood belongs to the municipality of its own district. İzmit has the most units (104, 21% of all units in the province), and Çayırova has the fewest (11 units).

Key features

  • Formats: GeoPackage (.gpkg) or Esri Shapefile (.shp), sold as two separate variants, GeoPackage (gpkg) and Shape file; GIS-ready for QGIS, ArcGIS and other GIS software
  • Coordinate reference system: WGS 84 (EPSG:4326)
  • Nesting: every unit lies exactly inside its district and the Kocaeli province boundary
  • IDs and names: stable Geolocet unit IDs, official unit codes and official unit names, plus Turkish title-case names
  • Area coverage: 100% of the province area.
  • Version: v5, updated October 2026

Districts (ilçe) in Kocaeli

Kocaeli has 12 districts. Units per district: Başiskele (38), Çayırova (11), Darıca (14), Derince (17), Dilovası (17), Gebze (45), Gölcük (50), İzmit (104), Kandıra (96), Karamürsel (27), Kartepe (32), Körfez (36).

Attributes and sample records

Each polygon has 12 fields; Shapefile field names are shortened where needed (for example belediye_id becomes bel_id). Field descriptions are on the Turkey neighbourhood boundaries page. Sample records from Kocaeli:

id name name_official type belediye_id belediye_name district_id district_name province_id province_name official_code area_km2 geometry
90001289 Aksığın AKSIĞIN mahalle 92002584 Başiskele 2422995 Başiskele 446947 Kocaeli 719542 12.225 polygon data
90000407 Adem Yavuz ADEM YAVUZ mahalle 92002580 Gebze 2422993 Gebze 446947 Kocaeli 50268 0.805 polygon data
90003526 Atatürk ATATÜRK mahalle 92002578 Gölcük 2422989 Gölcük 446947 Kocaeli 50358 0.874 polygon data
90000096 28 Haziran 28 HAZİRAN mahalle 92002616 İzmit 2422987 İzmit 446947 Kocaeli 50144 0.657 polygon data
90000572 Ahmethacılar AHMETHACILAR mahalle 92002577 Kandıra 2422983 Kandıra 446947 Kocaeli 656652 11.308 polygon data

Full national dataset

The full multi-level national dataset (country, regions, provinces, districts, belediye and 50,558 neighbourhoods and villages) is available on request (contact@geolocet.com).

Frequently asked questions

How many neighbourhoods and villages does Kocaeli have in this dataset?
The Kocaeli layer contains 487 units in 12 districts. All 468 classified units are neighbourhoods (mahalle); Kocaeli has no villages (köy) in this layer, and 19 units are unclassified. Since 2014, under Law No. 6360, the former villages of metropolitan provinces (büyükşehir) such as Kocaeli have been neighbourhoods (mahalle).
Is each neighbourhood linked to its belediye?
Yes, all 468 neighbourhoods in Kocaeli carry the ID and name of their municipality (belediye).
Is there a free sample?
Yes. The free Yalova sample has every administrative level in GeoPackage and Shapefile format; select Free sample (Yalova) on the Turkey neighbourhood boundaries page.
Can I get all of Türkiye or other administrative levels?
Yes. The neighbourhood layers of all 81 provinces also form one national dataset together with the country, region, province, district and belediye layers; it is supplied after an enquiry, as described under Full national dataset.

Dataset metadata

Dataset name
Kocaeli Neighbourhood and Village Boundaries (Mahalle & Köy)
Description
Boundary polygons of the 487 neighbourhoods and villages of Kocaeli province, Türkiye, in 12 districts: 468 mahalle and 19 unclassified. İzmit is the district with the most units (104), and the polygons cover 100% of the province area. Each unit has a stable Geolocet ID, its official name and code, its district and province, and neighbourhoods are linked to one of 12 municipalities (belediye). Typical uses are GIS mapping, geocoding, spatial joins and market and logistics analysis. The layer is a paid download in GeoPackage or Shapefile format (EPSG:4326) under the Geolocet terms of service.
Dataset ID
geolocet-turkey-neighbourhoods-v5-kocaeli
Publisher
Geolocet
Version
v5 (product version)
Last updated
October 2026 (release of v5)
Reference period
October 2026: the administrative units as compiled for this release
Spatial coverage
Kocaeli province (il), Türkiye; bounding box (WGS 84): south 40.5235, west 29.3334, north 41.2177, east 30.3671
Administrative level and features
Admin level 8 (mahalle and köy): 487 polygons in 12 districts
Formats
GeoPackage (.gpkg) or Shapefile (.shp), one format per variant
Coordinate reference system
WGS 84 (EPSG:4326)
Identifiers
id is a stable Geolocet unit ID (not a government code); official_code is the official administrative unit code; district_id and province_id equal the id of the Geolocet district and province layers
Geometry
Boundary polygons compiled by Geolocet from official and open sources and aligned to the district boundaries; the official attributes are the unit names and codes, and the polygons are a GIS representation, not a legally binding boundary delimitation
Area coverage
100% of the province area
Access
Paid download: GeoPackage or Shapefile variant
Licence
Geolocet terms of service
Part of
Turkey Neighbourhood and Village Boundaries (Mahalle & Köy)
Language
English, with Turkish names and a Turkish summary

Türkçe özet

Kocaeli mahalle sınırları (GIS verisi): Kocaeli ilindeki 12 ilçede bulunan 487 birimin sınırları Shapefile veya GeoPackage formatında indirilebilir. En fazla birim İzmit ilçesindedir (104).