Semizkumlar, Silivri
Semizkumlar Neighbourhood Steel Doors
Semizkumlar is one of 35 neighbourhoods in Silivri. Population 37,159 (2025), area 13.52 km², density 2,749 per km². Postcode 34570. Muhtar's office: İdeal Sk. No:9 SEMİZKUMLAR/SİLİVRİ. District population rank 2 of 35. Holds 15.5% of district population. 8 named buildings. Our workshop in İkitelli OSB is 55 km away as the crow flies. Nearest: Çeltik, 4.6 km. We come to this address to measure.
Steel door manufacture, sales, on-site measurement, installation and service across Istanbul.
Semizkumlar facts and sources
| Fact | Semizkumlar |
|---|---|
| Population | 37,159 (2025), second source agrees [1, 2] |
| Women / men | 3,847 / 33,312 [1] |
| Postcode | 34570 [3] |
| Area | 13.52 km² (calculated) [4] |
| Population density | 2,749 people/km² (calculated) [1, 4] |
| Muhtar's office | Semizkumlar Mahalle Muhtarlığı [5] |
| Office address | İdeal Sk. No:9 SEMİZKUMLAR/SİLİVRİ [5] |
| Coordinates | 41.075279, 28.147001 (office building) [5] |
Sources (6), checked 5 November 2026
- [1] dataset version 2025, updated 2026-05-21; primary source TÜİK MEDAS (biruni.tuik.gov.tr/medas) · api.turkiyeapi.dev/v2/neighborhoods?provinceId=34
- [2] derived from TÜİK ADNKS 2025 data (retrieved 2026-11-05) · https://www.nufusune.com/40926-istanbul-silivri-semizkumlar-mahallesi-nufusu
- [3] postcode source PTT Kargo (ptt.gov.tr/posta-kodu), dataset version 2025, updated 2026-05-21 · api.turkiyeapi.dev/v2/neighborhoods?provinceId=34
- [4] openstreetmap.org/relation/9669360 (OSM contributors, ODbL; retrieved 2026-11-05) · nominatim.openstreetmap.org
- [5] İBB Open Data Portal, "Muhtarlık Adres Bilgileri" (GeoJSON, dataset updated: 2025-06-05) · data.ibb.gov.tr
- [6] Overpass API, named buildings inside relation/9669360; retrieved 2026-11-05 · OpenStreetMap (OSM contributors, ODbL)
Named buildings inside Semizkumlar
8 named buildings
- Marmara Ceza İnfaz Kurumu Devlet Hastanesihospital
- Atatürk Büstühistoric building
- İrfan Sırdaş Aile Eğitim Vakfı I.Ö.O.school
- Hacı Dursun Yıldırım Camiiplace of worship
- Camiplace of worship
- Semizkumlar Camiiplace of worship
- Semizkumlar Mahallesi Mescitiplace of worship
- Açık Cezaevi Aile Sağlık Merkeziclinic / health centre
Semizkumlar within Silivri
- Density against district average
- 1.29x
- Sharing postcode 34570
- 7 neighbourhoods
Neighbourhoods around Semizkumlar
Straight line between muhtar office buildings, not a shared border.
Carry on from Semizkumlar
Survey, manufacture and installation run with one team across Silivri.