Kosumb is a village in the Sangameshwar Taluka of Ratnagiri District in Maharashtra, India. Kosumb Pin Code is 415804. It has Branch Post Office (Delivery Office) which comes under Devrukh Sub Post Office of Ratnagiri H.O. in Ratnagiri.
Kosumb is bordered by Vighravali, Sonavade, Muchari, Terye, Karambele Tarf Sangameshwar, Tamhane, Kudavali and Sadavali villages of Sangameshwar taluka. Jugai Devi is the village deity of Kosumb. Village also has Shri Dev Vitthal and Maruti Temple, Ganpati Temple, Ubha Maruti Temple.
Kosumb is at a distance of 6 kms from Devrukh, 10 kms from Sangameshwar and 43 kms from Ratnagiri. Pune to Kosumb distance is 275 kms via Satara-Karad-Kokrud-Malkapur-Sakharpa while Mumbai to Kosumb distance is 297 kms.
- Grampanchayat: Kosumb
- Panchayat Samiti: Sangameshwar (Devrukh)
- Zilla Parishad: Ratnagiri
- Vidhan Sabha Constituency: Chiplun – Sangameshwar
- Member of Legislative Assembly (MLA): Shekhar Govindrao Nikam
- Lok Sabha Constituency: Ratnagiri – Sindhudurg
- Member of Parliament (MP) : Narayan Tatu Rane
- Police Station: Devrukh
- Hospital: Devrukh Rural Hospital
- Devrukh ST Stand Contact Number: 02354-260151
- Sangameshwar ST Stand Phone Number: 02354-272031
- Railway Station: Sangameshwar Road Railway Station