Quick Answer: Baringo County’s main postal code is 30400 for the Kabarnet GPO the county headquarters. The county spans 7 sub-counties and uses multiple codes: 30401 for Kabartonjo, 30403 for Marigat, 20103 for Eldama Ravine, 20105 for Mogotio, 30404 for Nginyang, and 30406 for Kampi ya Samaki. Always use the specific code for your area using 30400 for all Baringo addresses is a common mistake that causes mail delays.
Are You Looking for the Correct Postal Code in Baringo? You are in the right place. Baringo County is a vast and scenic county located in Kenya’s former Rift Valley Province, designated as County Number 030 under the 2010 Kenyan Constitution. Its headquarters and largest town is Kabarnet, which hosts the county’s main General Post Office (GPO) under postal code 30400.
Baringo County covers approximately 11,075 km² and had a population of 666,763 according to the 2019 Kenya National Census. The county borders Turkana and Samburu counties to the north, Laikipia to the east, Nakuru and Kericho to the south, and West Pokot and Elgeyo-Marakwet to the west. It is home to the famous Lake Baringo and Lake Bogoria, both of which are internationally recognized for tourism, bird watching, and ecology.
What Are Baringo Postal Codes?
A Baringo postal code is a five-digit number used by Posta Kenya (the Postal Corporation of Kenya) to route mail and parcels to specific post offices within the county. Unlike some countries that use postcode systems for door-to-door delivery, most areas in Baringo rely on P.O. Box numbers at the nearest post office rather than home or street delivery.
Baringo County has a unique dual-prefix system:
- Codes beginning with 3 (e.g., 30400, 30401, 30403) fall under the Rift Valley postal region, which covers Kabarnet, Marigat, Nginyang, Kabartonjo, and most of the county.
- Codes beginning with 2 (e.g., 20103, 20105, 20144) fall under the Nakuru postal region, covering Eldama Ravine, Mogotio, Kisanana, and neighbouring areas historically administered under Nakuru’s postal district.
Example breakdown: The code 30400 = 3 (Rift Valley region) + 0400 (Kabarnet GPO identifier). Similarly, 20103 = 2 (Nakuru region) + 0103 (Eldama Ravine post office).
All 7 Baringo Sub-Counties and Their Postal Codes
Baringo County is divided into 7 sub-counties (also serving as constituencies, with Tiaty being one constituency covering both Tiaty East and West), containing 30 electoral wards and 160+ villages. Each sub-county is served by one or more post offices with distinct postal codes.
| Sub-County | Constituency | Main Postal Code(s) | Main Town / Centre | No. of Wards |
|---|---|---|---|---|
| Baringo Central | Baringo Central | 30400, 30405, 30406, 30407 | Kabarnet | 5 |
| Baringo North | Baringo North | 30401, 30408, 30412 | Kabartonjo | 5 |
| Baringo South | Baringo South | 30403, 30404 | Marigat | 4 |
| Tiaty East | Tiaty | 30404, 30409 | Nginyang | 4 |
| Tiaty West | Tiaty | 30402, 30409 | Kiptagich | 3 |
| Eldama Ravine | Eldama Ravine | 20103, 20144, 20145, 20153 | Eldama Ravine | 6 |
| Mogotio | Mogotio | 20105, 20144 | Mogotio | 3 |
Sub-County Postal Code Breakdown
1. Baringo Central Sub-County — Postal Code: 30400
Baringo Central is the administrative heart of the county, home to Kabarnet town, the county headquarters. The Kabarnet GPO serves as the primary post office for the entire county.
Wards: Kabarnet, Sacho, Tenges, Kapropita, Ewalel/Chapchai
| Area / Location | Postal Code | Notes |
|---|---|---|
| Kabarnet Town (GPO) | 30400 | County HQ, main post office |
| Tenges | 30405 | Tenges ward sub-office |
| Kampi ya Samaki | 30406 | Lake Baringo tourism area |
| Seretunin | 30407 | Rural sub-office, central zone |
| Huduma Centre Kabarnet | 30413 | Government services centre |
Key institutions in Baringo Central:
- Baringo County Referral Hospital — 30400
- Kabarnet High School — 30400
- Kabarnet Museum — 30400
- Baringo County Government Headquarters — 30400
- Baringo County Assembly — 30400
- Visa Oshwal Primary School — 30400
2. Baringo North Sub-County — Postal Code: 30401
Baringo North is a largely agricultural sub-county located in the northern part of the county. Its main town is Kabartonjo, which houses the area’s main post office.
Wards: Barwessa, Kabartonjo, Saimo/Kipsaraman, Saimo/Soi, Bartabwa
| Area / Location | Postal Code | Notes |
|---|---|---|
| Kabartonjo | 30401 | Main post office for Baringo North |
| Bartolimo / Barwessa | 30412 | Barwessa and Bartabwa wards |
| Kipsaraman | 30411 | Saimo/Kipsaraman ward |
| Kapkenda | 30119 | Cross-boundary area, northern zone |
3. Baringo South Sub-County — Postal Code: 30403
Baringo South is known for its proximity to Lake Baringo and Lake Bogoria, two of Kenya’s most famous Rift Valley lakes. The sub-county attracts significant tourism. Its main post office is at Marigat.
Wards: Mukutani, Marigat, Mochongoi, Ilchamus
| Area / Location | Postal Code | Notes |
|---|---|---|
| Marigat Town | 30403 | Main post office, Baringo South HQ |
| Nginyang | 30404 | Shared with Tiaty East; semi-arid zone |
| Kampi ya Samaki | 30406 | Lake Baringo resort area, tourism hub |
| Mochongoi | 20312 | Mochongoi ward, border of Nakuru region |
4. Tiaty Sub-County (East & West) — Postal Codes: 30402, 30404, 30409
Tiaty is the largest sub-county in Baringo by area, covering approximately 4,517 km². It is a predominantly pastoralist, semi-arid zone inhabited mainly by the Pokot community. Administratively split into Tiaty East and Tiaty West, both fall under the single Tiaty constituency.
Tiaty East Wards: Silale, Tangulbei, Loiyamorok, Churo/Amaya
Tiaty West Wards: Tirioko, Kolowa, Ribkwo
| Area / Location | Postal Code | Notes |
|---|---|---|
| Nginyang | 30404 | Main town, Tiaty East hub |
| Kiptagich | 30402 | Tiaty West post office |
| Bartabwa / Tiaty remote areas | 30409 | Remote northern zone sub-office |
Important: Many parts of Tiaty are extremely remote. Residents often travel long distances to the nearest post office. P.O. Box usage at Nginyang (30404) or Kabarnet (30400) is most practical for formal correspondence.
5. Eldama Ravine Sub-County — Postal Code: 20103
Eldama Ravine (also written E/Ravine) is a busy market town and the headquarters of the Eldama Ravine sub-county. It is located in the southern part of Baringo County and was historically the headquarters of the former Koibatek District. Importantly, Eldama Ravine and surrounding areas use postal codes starting with 2, placing them under the Nakuru postal region — not the Rift Valley region used by the rest of Baringo.
Wards: Lembus, Ravine, Lembus Kwen, Koibatek, Lembus Perkerra, Mumberes/Majimazuri
| Area / Location | Postal Code | Notes |
|---|---|---|
| Eldama Ravine Town | 20103 | Sub-county HQ, main post office |
| Kisanana | 20144 | Kisanana ward area |
| Maji Mazuri | 20145 | Mumberes/Majimazuri ward |
| Torongo | 20153 | Lembus Perkerra area |
6. Mogotio Sub-County — Postal Code: 20105
Mogotio is a sub-county located in the southern part of Baringo, bordering Nakuru County. Like Eldama Ravine, it was previously part of Koibatek District and its postal codes fall under the Nakuru postal region (prefix 2), not the Rift Valley region.
Wards: Mogotio, Emining, Kisanana
| Area / Location | Postal Code | Notes |
|---|---|---|
| Mogotio Town | 20105 | Main post office for Mogotio sub-county |
| Kisanana | 20144 | Shared with Eldama Ravine sub-county |
| Emining | 20105 | Uses Mogotio post office code |
Complete List of Baringo County Post Offices
Below is the full list of known post offices and postal sub-offices serving Baringo County, with their official postal codes as assigned by Posta Kenya.
| Post Office Name | Postal Code | Sub-County / Area | Key Services |
|---|---|---|---|
| Kabarnet GPO | 30400 | Baringo Central | Full service, P.O. Boxes, Money Orders, EMS |
| Kabartonjo | 30401 | Baringo North | P.O. Boxes, basic postal services |
| Kiptagich | 30402 | Tiaty West | Basic postal services |
| Marigat | 30403 | Baringo South | P.O. Boxes, postal services |
| Nginyang | 30404 | Tiaty East / Baringo South | Basic postal services, remote area |
| Tenges | 30405 | Baringo Central | Sub-office, P.O. Boxes |
| Kampi ya Samaki | 30406 | Baringo South | P.O. Boxes, tourism area services |
| Seretunin | 30407 | Baringo Central | Rural sub-office |
| Bartolimo | 30408 | Baringo North | Sub-office, Barwessa area |
| Kipsaraman | 30411 | Baringo North | Saimo/Kipsaraman ward |
| Bartabwa / Barwessa | 30412 | Baringo North | Bartabwa ward sub-office |
| Huduma Centre Kabarnet | 30413 | Baringo Central | Government integrated services |
| Kapkenda | 30119 | Baringo North (border) | Cross-boundary area sub-office |
| Eldama Ravine | 20103 | Eldama Ravine | Full service, P.O. Boxes, Money Orders |
| Mogotio | 20105 | Mogotio | P.O. Boxes, postal services |
| Kisanana | 20144 | Mogotio / Eldama Ravine | Sub-office, shared boundary area |
| Maji Mazuri | 20145 | Eldama Ravine | Sub-office, Mumberes ward |
| Torongo | 20153 | Eldama Ravine | Sub-office, Lembus Perkerra |
Key Institutions and Their Postal Codes in Baringo County
| Institution | Location | Postal Code |
|---|---|---|
| Baringo County Referral Hospital | Kabarnet | 30400 |
| Kabarnet High School | Kabarnet | 30400 |
| Kabarnet Museum | Kabarnet (opp. Visa Oshwal School) | 30400 |
| Baringo County Government HQ | Kabarnet | 30400 |
| Baringo County Assembly | Kabarnet | 30400 |
| Huduma Centre Kabarnet | Kabarnet | 30413 |
| Eldama Ravine District Hospital | Eldama Ravine | 20103 |
| Lake Baringo Eco Camp / Lodges | Kampi ya Samaki | 30406 |
| Lake Bogoria National Reserve | Marigat area | 30403 |
| Mogotio Sub-County Hospital | Mogotio | 20105 |
How to Write a Baringo Postal Address Correctly
Most residents and businesses in Baringo County use a P.O. Box number at their nearest post office, combined with the correct postal code. Street-level home delivery is not available in most parts of Baringo.
Domestic Address Format (example — Kabarnet):
John Musa
P.O. Box 123
Kabarnet, 30400
KENYA
International Address Format (example — Eldama Ravine):
Mary Chebet
P.O. Box 456
Eldama Ravine
20103 KENYA
FAQs About Baringo County Postal Codes
What is the main postal code for Baringo County?
The main postal code for Baringo County is 30400. This is the code for the Kabarnet General Post Office (GPO), which is the county headquarters post office. Most official correspondence for Baringo County institutions uses this code.
Can I use 30400 for all addresses in Baringo County?
No. Using 30400 for all Baringo addresses is a very common mistake that causes serious mail delivery delays. Each sub-county and area has its own specific code. For example, if you are in Eldama Ravine, you must use 20103; in Mogotio, use 20105; in Marigat, use 30403. Always use the code for your nearest post office.
Why does Eldama Ravine have a code starting with 2 (20103) instead of 3?
Eldama Ravine and Mogotio use codes beginning with 2 because they historically fell under the Nakuru postal district (Koibatek District era). When Baringo County was created under Kenya’s 2010 Constitution, the political boundaries changed but the existing postal codes were retained by Posta Kenya. This is a historical carryover, not an error.
What is the postal code for Marigat and the Lake Baringo area?
Marigat town uses postal code 30403. The Kampi ya Samaki area near Lake Baringo uses 30406. If you are booking accommodation at Lake Baringo or sending mail to the area, use 30406 for Kampi ya Samaki and 30403 for Marigat and surroundings.
What is the postal code for Kabartonjo in Baringo North?
Kabartonjo, the main town in Baringo North sub-county, uses postal code 30401. This serves the Barwessa, Kabartonjo, and surrounding wards in northern Baringo.
How many post offices are there in Baringo County?
Baringo County has approximately 18 post offices and sub-offices as officially listed by Posta Kenya. The main full-service offices are at Kabarnet (30400), Eldama Ravine (20103), Marigat (30403), and Kabartonjo (30401). Smaller sub-offices serve more remote wards across the county.
Posta Kenya Contact Information for Baringo County
| Contact Type | Details |
|---|---|
| Kabarnet GPO Phone | 05322374 / 22233 |
| Kabarnet GPO Mobile | 0734 730505 |
| Kabarnet GPO Address | P.O. Box 1, Kabarnet, 30400 |
| Eldama Ravine Post Office | P.O. Box, Eldama Ravine, 20103 |
| Posta Kenya Website | www.posta.co.ke |
| Posta Kenya National Helpline | 020 2227651 / 0800 720 888 (toll-free) |
| Operating Hours (Main Offices) | Mon–Fri: 8:00 AM – 5:00 PM | Sat: 9:00 AM – 12:00 PM |
Related Pages:
Nakuru Postal Codes | All Kenya County Postal Codes