Nyeri Postal Codes – Official Post Offices & Areas

Quick Answer: Nyeri County’s Main Postal code is 10100 for Nyeri Town. However, the county uses 20+ different postal codes across its 8 sub-counties, including: Karatina (10101), Kiganjo (10102), Mukurweini (10103), Mweiga (10104), Othaya (10106), Endarasha (10107), and others.

Nyeri County is located in Central Kenya, approximately 150 kilometers north of Nairobi. As the former headquarters of the Central Province, Nyeri plays a crucial role in Kenya’s postal network. Many people make the mistake of using 10100 for all Nyeri addresses. While 10100 works for Nyeri Town itself, it won’t suffice for other areas like Karatina, Othaya, or Mukurweini. The county is divided into 8 sub-counties (Nyeri Central, Mathira East, Mathira West, Kieni East, Kieni West, Mukurweini, Othaya, and Tetu), each with distinct postal codes.

What Are Nyeri Postal Codes?

Nyeri Postal Code is 10100. It uses the postal region prefix 10, which identifies it as part of the Central Highland region managed by Posta Kenya. This differs from Nairobi’s 00 prefix or Mombasa’s 80 prefix. The format follows Kenya’s standard five-digit structure: the first two digits (10) represent the broader Central Highland region, while the final three digits pinpoint the specific post office or delivery zone.

For example, 10100 breaks down as:

• 10 = Central Highland region (Nyeri/Mount Kenya area)
• 100 = Nyeri Town (Main Post Office)

All 8 Nyeri Sub-Counties and Their Postal Codes

Nyeri County is divided into 8 sub-counties for administrative purposes, and each has its own postal codes vital for the sorting and delivery of mail on time:

No.	Sub-County	Main Town(s)	Main Postal Code(s)	Population	Area (km²)	Wards
1	Nyeri Central	Nyeri Town, Kiganjo, Ruringu	10100, 10102, 10133, 10141	140,338	167.6	5
2	Mathira East	Karatina, Konyu, Magutu	10101, 10111, 10122	99,065	130.4	4
3	Mathira West	Iriani, Magutu	10123, 10125	60,155	206.3	4
4	Kieni East	Narumoru, Kabaru, Thegu	10107, 10109, 10114	110,376	448.7	4
5	Kieni West	Mweiga, Endarasha, Gatarakwa	10104, 10107, 10108	88,525	517.8	4
6	Mukurweini	Mukurweini Town, Gikondi	10103, 10129, 10130	89,137	179.1	4
7	Othaya	Othaya Town, Chinga, Karima	10106, 10140, 10142	91,081	169.2	4
8	Tetu	Aguthi, Wamagana, DeKUT	10143, 10144, 10136	80,453	216.5	3

Nyeri Central Sub-County – (10100, 10102, 10133, 10141)

Nyeri Central is the most populous sub-county in Nyeri County with 140,338 residents. It serves as the county headquarters and is home to Nyeri Town, the administrative and commercial heart of the region.

The main Nyeri Central Postal Codes are:

• 10100 – Nyeri Town GPO (General Post Office)
• 10102 – Kiganjo (Kenya Police College area)
• 10133 – Ruringu
• 10141 – Kamakwa Road
• 10114 – Gatitu

Mathira East Sub-County – (10101, 10111, 10122)

Mathira East is home to Karatina Town, a major commercial hub and trading center. With a population of 99,065, it’s the third most populous sub-county in Nyeri.

• 10101 – Karatina Town (Major trading center)
• 10111 – Konyu
• 10122 – Magutu

Mathira West Sub-County – (10123, 10125)

Mathira West covers 206.3 square kilometers with a population of 60,155 residents. It has two main Postal codes:

• 10123 – Mathira area
• 10125 – Western Mathira locations

Kieni East Sub-County – (10107, 10109, 10114)

Kieni East is the second most populous sub-county with 110,376 residents. It serves as the gateway to Mount Kenya and features scenic highlands.

• 10107 – Endarasha / Narumoru
• 10109 – Kabaru
• 10114 – Thegu / Gakawa

Kieni West Sub-County – (10104, 10107, 10108)

Kieni West is the largest sub-county by area (517.8 km²) with 88,525 residents. It is also Known for its proximity to Aberdare National Park and agricultural activities.

• 10104 – Mweiga Town
• 10107 – Endarasha
• 10108 – Giakanja / Gatarakwa

Mukurweini Sub-County – (10103, 10129, 10130)

Mukurweini covers 179.1 square kilometers with a population of 89,137 residents. It’s an agricultural hub known for tea and coffee production.

• 10103 – Mukurweini Town (Main)
• 10129 – Rugi area
• 10130 – Gikondi

Othaya Sub-County – (10106, 10140, 10142)

Othaya has a population of 91,081 residents and is historically significant as the hometown of Kenya’s first president, Mzee Jomo Kenyatta.

• 10106 – Othaya Town (Main)
• 10140 – Chinga
• 10142 – Karima / Mahiga

Tetu Sub-County – (10143, 10144, 10136)

Tetu has 80,453 residents and is named after freedom fighter Dedan Kimathi. It’s home to Dedan Kimathi University of Technology and Karatina University.

• 10143 – Dedan Kimathi University of Technology
• 10144 – Karatina University
• 10136 – Tetu general area

Complete List of Nyeri Post Offices

Posta Kenya operates numerous post offices throughout Nyeri County, each serving specific geographic areas and communities:

Post Office Name	Postal Code	Sub-County	Town/Location	Services Available
Nyeri GPO	10100	Nyeri Central	Nyeri Town, Kanisa Rd	Full Services, P.O. Boxes, EMS, Parcels, Banking, PostBank
Kiganjo Post Office	10102	Nyeri Central	Kiganjo (Police College)	P.O. Boxes, Mail Services
Ruringu Post Office	10133	Nyeri Central	Ruringu area	P.O. Boxes, Mail Services
Kamakwa Post Office	10141	Nyeri Central	Kamakwa Road	P.O. Boxes, Mail Services
Gatitu Post Office	10114	Nyeri Central	Gatitu	P.O. Boxes, Mail Services
Karatina Post Office	10101	Mathira East	Karatina Town	Full Services, P.O. Boxes, EMS, Parcels
Magutu Post Office	10122	Mathira East	Magutu	P.O. Boxes, Mail Services
Konyu Post Office	10111	Mathira East	Konyu	P.O. Boxes, Mail Services
Mathira Post Office	10123	Mathira West	Mathira area	P.O. Boxes, Mail Services
Mweiga Post Office	10104	Kieni West	Mweiga Town	P.O. Boxes, Mail Services
Endarasha Post Office	10107	Kieni East/West	Endarasha	P.O. Boxes, Mail Services
Giakanja Post Office	10108	Kieni West	Giakanja	P.O. Boxes, Mail Services
Narumoru Post Office	10107	Kieni East	Narumoru	P.O. Boxes, Mail Services
Mukurweini Post Office	10103	Mukurweini	Mukurweini Town	Full Services, P.O. Boxes, EMS
Othaya Post Office	10106	Othaya	Othaya Town	Full Services, P.O. Boxes, EMS
Chinga Post Office	10140	Othaya	Chinga	P.O. Boxes, Mail Services
Karima Post Office	10142	Othaya	Karima	P.O. Boxes, Mail Services
DeKUT Post Office	10143	Tetu	Dedan Kimathi University	University Services, P.O. Boxes
Karatina University	10144	Tetu/Mathira	Karatina University	University Services, P.O. Boxes

Nyeri Post Office Hours

All Nyeri post offices operate on standard Kenya Postal Corporation hours:

• Weekdays (Monday – Friday): 8:00 AM – 5:00 PM
• Saturday: 8:00 AM – 12:00 PM
• Sunday and Public Holidays: Closed
• Nyeri GPO Contact: 0735 768 044 / 061 2034033 / 061 203067

How to Apply for a P.O. Box in Nyeri

The application process to get your own P.O. Box in Nyeri is straightforward, thanks to the online system introduced by Posta Kenya. The process is now entirely online, allowing you to complete everything from your phone or computer.

Posta Kenya offers two types of P.O. Boxes:

• Physical P.O. Box (Traditional Metal Box) – You get physical keys, a designated box number, and a secure slot at your chosen post office. Cost: KSh 1,500 – KSh 10,000 annually.
• Virtual P.O. Box (MPost) – Your phone number becomes your postal address. You receive SMS alerts when mail arrives, then visit the post office with your ID to collect. More affordable option.

All P.O. Box applications in Nyeri are done via the Posta Kenya Application Portal at: https://apps.posta.co.ke/boxupdate/ for 10100 for Nyeri, 10101 for Karatina, 10103 for Mukurweini, etc.

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