Kisii Postal Codes – Post Offices & Zip Codes
Kisii County, officially County Number 045, sits in the southwestern highlands of Kenya in the area formerly known as Nyanza Province. The county is home to the Abagusii (Gusii) people. Kisii Town, also known locally as Bosongo, is the county’s administrative and commercial center.
Kisii Town lies approximately 300 kilometers west of Nairobi. It is a busy commercial center in the former Nyanza region and is served by Kisii General Post Office, which uses postal code 40200. The post-office codes listed for Kisii County begin with 4. The neighboring Nyamira County also has postal codes beginning with 4.
Kisii County — Key Facts
| Detail | Information |
|---|---|
| Official County Name | Kisii County |
| County Number | 045 |
| Local Name | Bosongo (Kisii Town) |
| Former Province | Nyanza Province |
| County Capital | Kisii Town |
| Distance from Nairobi | Approximately 300 km west |
| Land Area | Approximately 1,332.7 km² |
| Population (2019 Census) | 1,266,860 |
| Population Projection (2025) | Approximately 1,370,371 |
| Constituencies | 9 |
| Sub-Counties | 9 in the current county profile |
| County Assembly Wards | 45 |
| Locations | 103 |
| Sub-Locations | 237 |
| Main Postal Code | 40200 (Kisii GPO) |
| First Digit in Listed County Codes | 4 |
| Governor | Simba Arati |
| Neighbouring Counties | Nyamira, Narok, Homa Bay and Migori |
Kisii County Post Offices and Postal Codes
| Postal Code | Post Office / Town | Constituency / Area |
|---|---|---|
| 40200 | Kisii (GPO — General Post Office) | Kisii Town |
| 40201 | Gesusu | Nyaribari Masaba |
| 40202 | Keroka | Nyaribari Masaba area |
| 40203 | Nyamache | Bobasi area |
| 40204 | Ogembo | Ogembo area |
| 40205 | Nyambunwa | Kitutu Chache South |
| 40206 | Nyamarambe | South Mugirango |
| 40208 | Etago | South Mugirango |
| 40209 | Igare | Bomachoge Chache |
| 40210 | Itumbe | Bomachoge Borabu |
| 40211 | Kenyenya | Bomachoge Borabu |
| 40212 | Keumbu | Nyaribari Chache |
| 40213 | Kiamokama | Kitutu Chache South |
| 40214 | Marani | Kitutu Chache North |
| 40215 | Masimba | Bomachoge Chache |
| 40218 | Nyangusu | Bobasi |
| 40220 | Riosiri | Nyaribari Masaba |
| 40221 | Omogonchoro | Bobasi |
| 40229 | Tabaka | South Mugirango |
| 40514 | Nyaramba | Nyaribari Masaba |
| 40515 | Kegogi | Bobasi |
| 40516 | Magena | Bobasi |
Kisii County Constituencies and Their Postal Codes
| Constituency | Main Post Office(s) | Postal Code(s) |
|---|---|---|
| Kitutu Chache South | Kiamokama, Nyambunwa | 40213, 40205 |
| Kitutu Chache North | Marani | 40214 |
| Nyaribari Masaba | Gesusu, Keroka, Riosiri, Nyaramba | 40201, 40202, 40220, 40514 |
| Nyaribari Chache | Kisii GPO, Keumbu | 40200, 40212 |
| Bomachoge Borabu | Kenyenya, Itumbe | 40211, 40210 |
| Bomachoge Chache | Masimba, Igare | 40215, 40209 |
| Bobasi | Nyamache, Nyangusu, Omogonchoro, Kegogi, Magena | 40203, 40218, 40221, 40515, 40516 |
| South Mugirango | Nyamarambe, Etago, Tabaka | 40206, 40208, 40229 |
| Bonchari | Use the post office registered to the recipient’s P.O. Box | — |
Frequently Asked Questions
What is the postal code for Kisii Town?
40200
What is the ZIP code for Kisii, Kenya?
Kenya uses postal codes rather than the United States ZIP code system. If an online form asks for a ZIP code for a Kisii Town address, enter 40200.
What is the postal code for Keroka?
Keroka’s postal code is 40202. Keroka is a major town in the Nyaribari Masaba area. Use 40202 for a P.O. Box registered with the Keroka post office.
What is the postal code for Ogembo?
40204
What is the postal code for Kenyenya?
40211
What is the postal code for Marani?
Marani’s postal code is 40214. The Marani post office serves addresses registered there in the Kitutu Chache North area.
What is the postal code for Tabaka?
Tabaka’s postal code is 40229. Tabaka is known for its soapstone carvings and is in the South Mugirango area.
What county number is Kisii?
Kisii is County Number 045 in Kenya’s 47-county system. Its neighbouring counties are Nyamira to the north-east, Narok to the south, and Homa Bay and Migori to the west.
What is the postal code for Kisii University?
Kisii University’s main campus is in Bosongo, Kisii Town, and uses postal code 40200. Address mail to the university as: P.O. Box 408-40200, Kisii, Kenya.
Kisii Post Office Contact Information
For P.O. Box rental, parcel collection, registered mail and other services, contact Posta Kenya and ask about availability at the relevant branch.
| Detail | Information |
|---|---|
| Post Office Name | Kisii General Post Office (GPO) |
| Postal Code | 40200 |
| Town | Kisii Town, Kisii County |
| Kisii GPO Phone | — |
| Posta Kenya Customer Care | 0719 072 600 / 0730 642 600 / 020 324 2600 |
| customercare@posta.co.ke | |
| Official Website | posta.co.ke |
| Services | P.O. Box rental, parcel services, registered mail, money orders, MPost and EMS; confirm availability with the branch |
