| # | Village / Locality | Post Office | PIN Code | Sub District | Type |
|---|---|---|---|---|---|
| 101 | Kadakkavoor | Melkadakkavur BO | 📍 695306 | Chirayinkeezhu | Branch Post Office |
| 102 | Kadakkavoor | Nilakkamukku BO | 📍 695306 | Chirayinkeezhu | Branch Post Office |
| 103 | Kadakkavoor | Anjengo SO | 📍 695309 | Chirayinkeezhu | Post Office - PO |
| 104 | Kadakkavoor | Poothura BO | 📍 695309 | Chirayinkeezhu | Branch Post Office |
| 105 | Kadinamkulam | Channamkara BO | 📍 695301 | Thiruvananthapuram | Branch Post Office |
| 106 | Kadinamkulam | Chittattumukku BO | 📍 695301 | Thiruvananthapuram | Branch Post Office |
| 107 | Kadinamkulam | Puthencurichy SO | 📍 695303 | Thiruvananthapuram | Post Office - PO |
| 108 | Kallara | Kallara SO Thiruvananthapuram | 📍 695608 | Nedumangad | Post Office - PO |
| 109 | Kallara | Kattumpuram BO | 📍 695608 | Nedumangad | Branch Post Office |
| 110 | Kallara | Kodithookiyakunnu BO | 📍 695608 | Nedumangad | Branch Post Office |
| 111 | Kallara | Kurumbayam BO | 📍 695608 | Nedumangad | Branch Post Office |
| 112 | Kallara | Bharathannur BO | 📍 695609 | Nedumangad | Branch Post Office |
| 113 | Kallara | Mithirmala SO | 📍 695610 | Nedumangad | Post Office - PO |
| 114 | Kallara | Muthuvila BO | 📍 695610 | Nedumangad | Branch Post Office |
| 115 | Kallikkad | Mylakkara BO | 📍 695572 | Neyyattinkara | Branch Post Office |
| 116 | Kallikkad | Neyyar Dam BO | 📍 695572 | Neyyattinkara | Branch Post Office |
| 117 | Kalliyoor | Ookode BO | 📍 695020 | Thiruvananthapuram | Branch Post Office |
| 118 | Kalliyoor | Pallichal BO | 📍 695020 | Thiruvananthapuram | Branch Post Office |
| 119 | Kalliyoor | Kalliyoor SO | 📍 695042 | Thiruvananthapuram | Post Office - PO |
| 120 | Kalliyoor | Vellayani SO | 📍 695522 | Thiruvananthapuram | Post Office - PO |
| 121 | Kanjiramkulam | Kanjiramkulam SO | 📍 695524 | Neyyattinkara | Post Office - PO |
| 122 | Kanjiramkulam | Nellimoodu BO | 📍 695524 | Neyyattinkara | Branch Post Office |
| 123 | Kanjiramkulam | Kazhavur BO | 📍 695526 | Neyyattinkara | Branch Post Office |
| 124 | Kanjiramkulam | Lourdepuram BO | 📍 695526 | Neyyattinkara | Branch Post Office |
| 125 | Karakulam | Pandalacode BO | 📍 695028 | Nedumangad | Branch Post Office |
| 126 | Karakulam | Venkode BO | 📍 695028 | Nedumangad | Branch Post Office |
| 127 | Karakulam | Karakulam SO | 📍 695564 | Nedumangad | Post Office - PO |
| 128 | Karavaram | Nedumparambu BO | 📍 695102 | Chirayinkeezhu | Branch Post Office |
| 129 | Karavaram | Karavaram BO | 📍 695605 | Chirayinkeezhu | Branch Post Office |
| 130 | Karavaram | Thottakkad BO | 📍 695605 | Chirayinkeezhu | Branch Post Office |
| 131 | Karipur | Karipur BO | 📍 695541 | Nedumangad | Branch Post Office |
| 132 | Karipur | Nedumangad SO | 📍 695541 | Nedumangad | Post Office - PO |
| 133 | Karode | Plamootukada BO | 📍 695122 | Neyyattinkara | Branch Post Office |
| 134 | Karode | Ayira BO | 📍 695502 | Neyyattinkara | Branch Post Office |
| 135 | Karode | Kakkavila BO | 📍 695506 | Neyyattinkara | Branch Post Office |
| 136 | Karode | Karode BO | 📍 695506 | Neyyattinkara | Branch Post Office |
| 137 | Karode | Uchakada SO | 📍 695506 | Neyyattinkara | Post Office - PO |
| 138 | Karode | Pozhiyoor SO | 📍 695513 | Neyyattinkara | Post Office - PO |
| 139 | Karumkulam | Pulluvila SO | 📍 695526 | Neyyattinkara | Post Office - PO |
| 140 | Karumkulam | Puthiathura BO | 📍 695526 | Neyyattinkara | Branch Post Office |
| 141 | Kattakada | Kandala BO | 📍 695512 | Neyyattinkara | Branch Post Office |
| 142 | Kazhakkoottam-Menamkulam Part | Karyavattom SO | 📍 695581 | Thiruvananthapuram | Post Office - PO |
| 143 | Kazhakkoottam-Menamkulam Part | Thundathil BO | 📍 695581 | Thiruvananthapuram | Branch Post Office |
| 144 | Kazhakkoottam-Menamkulam Part | Kazhakuttam SO | 📍 695582 | Thiruvananthapuram | Post Office - PO |
| 145 | Kazhakkoottam-Menamkulam Part | Sainik School SO Thiruvananthapuram | 📍 695585 | Thiruvananthapuram | Post Office - PO |
| 146 | Kazhakkoottam-Menamkulam Part | Pallithura BO | 📍 695586 | Thiruvananthapuram | Branch Post Office |
| 147 | Kazhakkoottam-Menamkulam Part | Puthenthope BO | 📍 695586 | Thiruvananthapuram | Branch Post Office |
| 148 | Kazhakkoottam-Menamkulam Part | St.Xavier's College SO | 📍 695586 | Thiruvananthapuram | Branch Post Office |
| 149 | Keezharoor | Anavoor BO | 📍 695124 | Neyyattinkara | Branch Post Office |
| 150 | Keezharoor | Keezharur BO | 📍 695124 | Neyyattinkara | Branch Post Office |