| # | Village / Locality | Post Office | PIN Code | Sub District | Type |
|---|---|---|---|---|---|
| 101 | Kallelibhagom | Edakulangara BO | 📍 690523 | Karunagappally | Branch Post Office |
| 102 | Kallelibhagom | Thodiyur BO | 📍 690523 | Karunagappally | Branch Post Office |
| 103 | Kallelibhagom | Thodiyur North BO | 📍 690523 | Karunagappally | Branch Post Office |
| 104 | Kalluvathukkal | Bhoothakulam SO | 📍 691302 | Kollam | Post Office - PO |
| 105 | Kalluvathukkal | Velamannoor BO | 📍 691574 | Kollam | Branch Post Office |
| 106 | Kalluvathukkal | Kizhakkenela BO | 📍 691574 | Kollam | Post Office - PO |
| 107 | Kalluvathukkal | Kalluvathukkal SO | 📍 691578 | Kollam | Post Office - PO |
| 108 | Kalluvathukkal | Vilavoorkonam BO | 📍 691578 | Kollam | Branch Post Office |
| 109 | Kalluvathukkal | Aduthala BO | 📍 691579 | Kollam | Branch Post Office |
| 110 | Kalluvathukkal | Karamcode SO | 📍 691579 | Kollam | Post Office - PO |
| 111 | Karavaloor Part | Manalil BO | 📍 691312 | Pathanapuram | Branch Post Office |
| 112 | Karavaloor Part | Narikal BO | 📍 691322 | Pathanapuram | Branch Post Office |
| 113 | Karavaloor Part | Nellipally BO | 📍 691331 | Pathanapuram | Branch Post Office |
| 114 | Karavaloor Part | Areeplachy BO | 📍 691333 | Pathanapuram | Branch Post Office |
| 115 | Karavaloor Part | Karavaloor BO | 📍 691333 | Pathanapuram | Branch Post Office |
| 116 | Karavaloor Part | Mathra BO | 📍 691333 | Pathanapuram | Branch Post Office |
| 117 | Karavaloor Part | Venchempu BO | 📍 691333 | Pathanapuram | Branch Post Office |
| 118 | Kareepra | Ezhukone SO | 📍 691505 | Kottarakkara | Post Office - PO |
| 119 | Kareepra | Idakkadom BO | 📍 691505 | Kottarakkara | Branch Post Office |
| 120 | Kareepra | Kadakkode BO | 📍 691505 | Kottarakkara | Branch Post Office |
| 121 | Kareepra | Kuzhimathicaud SO | 📍 691509 | Kottarakkara | Post Office - PO |
| 122 | Kareepra | Nellimukku BO | 📍 691509 | Kottarakkara | Branch Post Office |
| 123 | Kareepra | Vakkanad BO | 📍 691509 | Kottarakkara | Branch Post Office |
| 124 | Kareepra | Thrioppilazhikom BO | 📍 691509 | Kottarakkara | Post Office - PO |
| 125 | Kareepra | Odanavattom SO | 📍 691512 | Kottarakkara | Post Office - PO |
| 126 | Karunagappally | Karunagappaly HO | 📍 690518 | Karunagappally | Branch Post Office |
| 127 | Karunagappally | Karunagappally North BO | 📍 690544 | Karunagappally | Branch Post Office |
| 128 | Karunagappally | Alumkadavu SO | 📍 690573 | Karunagappally | Post Office - PO |
| 129 | Kilikollur | Kallumthazham BO | 📍 691004 | Kollam | Branch Post Office |
| 130 | Kilikollur | Kilikollur SO | 📍 691004 | Kollam | Post Office - PO |
| 131 | Kizhakkekallada | East Kallada SO | 📍 691502 | Kollam | Post Office - PO |
| 132 | Kizhakkekallada | Koduvila BO | 📍 691502 | Kollam | Branch Post Office |
| 133 | Kollam | Kollam Bazar SO | 📍 691001 | Kollam | Post Office - PO |
| 134 | Kollam | Kollam Cantonment SO | 📍 691001 | Kollam | Post Office - PO |
| 135 | Kollam | Kollam HO | 📍 691001 | Kollam | Head Post Office - H |
| 136 | Kollam | Asramom SO | 📍 691002 | Kollam | Post Office - PO |
| 137 | Kollam | Kavanad SO | 📍 691003 | Kollam | Post Office - PO |
| 138 | Kollam | Maruthadi BO | 📍 691003 | Kollam | Branch Post Office |
| 139 | Kollam | Pallithottam SO | 📍 691006 | Kollam | Post Office - PO |
| 140 | Kollam | Thangasserry SO | 📍 691007 | Kollam | Post Office - PO |
| 141 | Kollam | Kadappakada SO | 📍 691008 | Kollam | Post Office - PO |
| 142 | Kollam | Thevally SO | 📍 691009 | Kollam | Post Office - PO |
| 143 | Kollam | Vadakkevila SO | 📍 691010 | Kollam | Post Office - PO |
| 144 | Kollam | Thirumullavaram SO | 📍 691012 | Kollam | Post Office - PO |
| 145 | Kollam | Kollam Cutchery SO | 📍 691013 | Kollam | Post Office - PO |
| 146 | Kollam | Uliyakovil SO | 📍 691019 | Kollam | Post Office - PO |
| 147 | Kollam | Pattathanam SO | 📍 691021 | Kollam | Post Office - PO |
| 148 | Kottamkara | T K M College SO | 📍 691005 | Kollam | Post Office - PO |
| 149 | Kottamkara | Kundara East SO | 📍 691501 | Kollam | Post Office - PO |
| 150 | Kottamkara | Perumpuzha SO | 📍 691504 | Kollam | Post Office - PO |