Kiambu County is one of the 47 counties of Kenya, situated next to Nairobi County. According to the latest census data 2019, it is also one of the most populous counties in Kenya, with a population of 2,417,735. Even with various technological advancements in Kenya, Kiambu County still uses postal codes attached to its multiple Towns and constituencies.
Knowing all the Kiambu Postal codes is very important, especially if you are a county resident or someone looking to do business there. Since the county is structured into various administrative units, understanding the Postal codes of Kiambu can be difficult for many. But it doesn’t have to be that difficult, especially since the Postal Corporation of Kenya has done the wonderful duty of providing all the Postal codes in Kenya. In this guide, we will walk you through everything you need to know about Kiambu Postal codes in 2025.
Kiambu Administrative Units
The 2010 Kenyan constitution brought about some changes to Kenya’s governance structure. Previously, Kenya was divided into a provincial system, and the current Kiambu County, which was located in the Central Province, was formed as a result.
But when you think about Kiambu County, you must understand that it covers a large geographical area and has a governor as its head. Furthermore, the county is split into 12 constituencies, each representing a ward in the county assembly.
The constituencies in Kiambu County are as follows:
- Gatundu North
- Gatundu South
- Githunguri
- Juja
- Kabete
- Kiambaa
- Kiambu
- Kikuyu
- Lari
- Limuru
- Ruiru
- Thika Town
Kiambu Postal Codes by Constituency
When understanding the Kiambu County postal codes, an essential factor to consider is the included constituencies. The official postal code for Kiambu is 00900, representing the Kiambu General Post Office. While this is the official postal code for the entire county, Posta Kenya manages it. The organization managing all the postal services in Kenya has done an excellent job by establishing other postal offices in Towns located at Various constituencies in Kiambu.
Below is a complete table of all the Kiambu Postal codes:
| Constituency | Area | Postal Code |
|---|---|---|
| Kiambu | Kiambu | 00900 |
| Kinari | 00227 | |
| Githiga | 00903 | |
| Kamiti | 00607 | |
| Ngecha | 00218 | |
| Thika Town | Thika | 01000 |
| Madaraka | 01002 | |
| Ndithini | 01016 | |
| Juja | Kalimoni | 01001 |
| Githunguri | Githunguri | 00216 |
| Gathugu | 00240 | |
| Ngewa | 00901 | |
| Gathiru-ini | 00239 | |
| Ruiru | Ruiru | 00232 |
| Kikuyu | Kikuyu | 00902 |
| Kerwa | 00906 | |
| Limuru | Limuru | 00217 |
| Nderu | 00229 | |
| Kiambaa | Karuri | 00219 |
| Muguga | 00228 | |
| Ndenderu | 00230 | |
| Lari | Kagwe | 00223 |
| Kijabe | 00220 | |
| Matathia | 00221 | |
| Uplands | 00222 | |
| Kabete | Lower Kabete | 00604 |
| Wangige | 00614 | |
| Gatundu ( North & South) | Gatundu | 01030 |
| Gatukuyu | 01028 | |
| Kamwangi | 01009 | |
| Makwa | 01009 | |
| Gatitu | 10114 | |
| Gituamba | 01003 | |
| Kanjuku | 01004 | |
| Kanyoni | 01011 |
Structure Of Postal Codes in Kiambu
From the table, if you pay attention, you will notice that Kiambu Postal codes are 5-digit numbers, the same format that the Postal Corporation of Kenya provides for all Postal codes in the country.
The five digits are not just numbers; they each carry a significant meaning. For example, the first two digits represent the postal region in Kenya. In this case, 00 is for Kiambu County, and the remaining three digits represent a specific delivery office in that region.
Why are Postal Codes Important?
As mentioned when we started the article, technology is now everywhere. From our mobile phones to Artificial intelligence, IOT, and more, we are experiencing their impacts firsthand or in one way or another. Postal codes were prevalent during the pre-colonial era and even after Kenya’s independence, but you might not know that they are still important today.
Postal codes are essential, especially when it comes to sorting and delivering mail. They ensure the package you sent online is received at its rightful destination. So even one digit when you make a mistake, your package will end up not being delivered, or rather, going to the totally wrong destination.
However, their imprint is not just seen in package delivery; many businesses today use them. For example, Organizations can analyze Posta code data in marketing and planning. This helps companies to thrive as they understand their clients’ demographics and target those areas with what customers might want. So, ensure you know which numbers to use next time you want to send a package to Kiambu County.
FAQs
What is the PO box code for Kiambu?
The box number for Kiambu is P.O. Box 2344-00900, which represents the county government headquarters in Kiambu Town.
What is the Ruiru postal code?
Ruiru’s Postal code is 00232
What is Thikas’ postal code?
It is 01000
What is the Kiambu County code?
Kenya has 47 counties, each identified by a numerical code; as per the constitution of Kenya, Kiambu is the county number 22
Well, that’s all you need to know. We hope the article has enabled you to discover all the Kiambu postal codes. As we have covered, the county postal code structure is identified by various constituencies. So, next time you want to use a postal code in Kiambu, use the correct digits so that your parcels can reach the right destination.
