| Councils |
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| Postal/ZIP Codes in Baragwi, Gichugu |
| Postal/ZIP Codes in Kabare, Gichugu |
| Postal/ZIP Codes in Karumandi, Gichugu |
| Postal/ZIP Codes in Ngariama, Gichugu |
| Postal/ZIP Codes in Njukiini, Gichugu |
| 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 |