Kollayil is a prominent village and grama panchayat situated within the Neyyattinkara taluk of Thiruvananthapuram district in Kerala. Located approximately 3 km northeast of the tehsil headquarters in Neyyattinkara town and about 23 km away from the district and state capital hub of Thiruvananthapuram, it spans a total geographical area of roughly 1,373 hectares under the 695122 PIN code area.
The locality is well-connected by all-weather local and internal asphalted roads, with frequent public and private bus services linking it seamlessly to neighbouring regions like Parasuvaikkal, Perumkadavila, and Kunnathukal. The nearest major railway station is located nearby at Dhanuvachapuram, while the Trivandrum International Airport sits at an aerial distance of roughly 19 km.
Local educational and community foundations include established institutions such as the Sree Narayana Upper Primary (SNUPS) School and Kollayil Lower Primary School, alongside active marketplace zones and local civic centers. Geographically and politically, the village falls under the Parassala State Legislative Assembly constituency and the Thiruvananthapuram Lok Sabha parliamentary constituency.
