County secondary schools in Kenya form the third tier after national and extra-county schools respectively.
Most of Kenyan learners are absorbed by these schools.
Admission to county schools is done online by the Ministry of Education.
They are either mixed or single-sex.
Here is a list of county schools found in Vihiga County
| KNEC CODE | NAME OF THE SCHOOL | CATEGORY | TYPE | |
| 1 | 38604106 | KEGOYE SECONDARY SCHOOL | County | Mixed |
| 2 | 38604108 | MBIHI SECONDARY SCHOOL | County | Mixed |
| 3 | 38618102 | EBUNANGWE SECONDARY SCHOOL | County | Boys |
| 4 | 38618105 | EBUSIRATSI SECONDARY SCHOOL | County | Girls |
| 5 | 38618109 | KILINGILI SECONDARY SCHOOL | County | Mixed |
| 6 | 38618205 | ESALWA SECONDARY SCHOOL | County | Boys |
| 7 | 38619104 | ST. ANNE´S BUYANGU GIRLS´ SCHOOL | County | Girls |
| 8 | 38619105 | DR MAURICE DANG’ANA SECONDARY SCHOOL | County | Mixed |
| 9 | 38619109 | MUNZATSI SECONDARY SCHOOL | County | Boys |
| 10 | 38619202 | SENENDE BOYS’ HIGH SCHOOL | County | Boys |
| 11 | 38619207 | IMUSUTSU MIXED SECONDARY SCHOOL | County | Mixed |
| 12 | 38619212 | FRIENDS SCHOOL KAIMOSI DEMONSTRATION SECONDARY | County | Mixed |
| 13 | 38622101 | BUSALI UNION SECONDARY SCHOOL | County | Boys |
| 14 | 38622104 | ST. URSULAS CHAMAKANGA GIRLS SECONDARY SCHOOL | County | Girls |
| 15 | 38622105 | GAHUMBWA SECONDARY SCHOOL | County | Mixed |
| 16 | 38622107 | FRIENDS HIGH SCHOOL KIGAMA | County | Boys |
| 17 | 38622113 | IKOBERO GIRLS SECONDARY SCHOOL | County | Girls |
| 18 | 38633202 | EBUBAYI SECONDARY SCHOOL | County | Mixed |
| 19 | 38633205 | IBUBI GIRLS SECONDARY SCHOOL | County | Girls |