| Councils |
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| Postal/ZIP Codes in Inoi, Kirinyaga Central |
| Postal/ZIP Codes in Kanyekini, Kirinyaga Central |
| Postal/ZIP Codes in Kerugoya, Kirinyaga Central |
| Postal/ZIP Codes in Mutira, Kirinyaga Central |
| Postal/ZIP Codes in Kirinyaga |
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| Postal/ZIP Codes in Gichugu |
| Postal/ZIP Codes in Kirinyaga Central |
| Postal/ZIP Codes in Mwea |
| Postal/ZIP Codes in Ndia |