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 made online by the Ministry of Education.
They are either mixed or single-sex.
Here is a list of County Schools in Kilifi County:
| NAME | KNEC CODE | TYPE | CATEGORY | |
| 1 | KILIFI TOWNSHIP SECONDARY SCHOOL | 04102101 | Boys | County |
| 2 | CHUMANI SECONDARY SCHOOL | 04102102 | Mixed | County |
| 3 | ST. THOMAS GIRLS’ SECONDARY SCHOOL | 04102114 | Girls | County |
| 4 | GEDE SECONDARY SCHOOL | 04107102 | Boys | County |
| 5 | KAKUYUNI BOYS SECONDARY SCHOOL | 04107108 | Boys | County |
| 6 | MARIAKANI SECONDARY SCHOOL | 04111103 | Boys | County |
| 7 | CHANAGANDE SECONDARY SCHOOL | 04111105 | Mixed | County |
| 8 | NGALA MEMORIAL SECONDARY SCHOOL | 04111107 | Mixed | County |
| 9 | MOI KADZONZO GIRLS SECONDARY SCHOOL | 04111108 | Girls | County |
| 10 | KALOLENI GIRLS SECONDARY SCHOOL | 04111123 | Girls | County |
| 11 | GANZE BOYS SECONDARY SCHOOL | 04116101 | Boys | County |
| 12 | GANZE GIRLS SECONDARY SCHOOL | 04116103 | Girls | County |
| 13 | VITENGENI BAPTIST SECONDARY SCHOOL | 04116301 | Mixed | County |
| 14 | MWANGEA GIRLS’ SECONDARY SCHOOL | 04116303 | Girls | County |
| 15 | GALANA SECONDARY SCHOOL | 04119101 | Mixed | County |
| 16 | MAPIMO GIRLS SECONDARY SCHOOL | 04119105 | Girls | County |
| 17 | MARAFA SECONDARY SCHOOL | 04119201 | Mixed | County |
| 18 | LUTSANGANI BOYS SECONDARY SCHOOL | 04129201 | Boys | County |
