Mombasa Postal Codes – Official Post Offices & Areas

Quick Answer: Mombasa County Main Postal code is 80100 for Mvita/Mombasa Island G.P.O. However, the county uses 5+ different postal codes across its six sub-counties, ie, 80119 for Nyali, 80101 for Bamburi/Kisauni, 80102 for Changamwe, 80105 for Jomvu, and 80110 for Likoni, etc.

Are you looking for the correct postal code in Mombasa? You’re in the right place. Mombasa County is Kenya’s oldest city, dating back to around 900 A.D., and is also the country’s second-largest urban center and main port city with over 1.2 million residents. As per the 2010 Kenyan Constitution, Momnbasa is designated as County number 001 in Kenya out of the 47 Counties.

Many people make the mistake of using 80100 for all Mombasa addresses. While 80100 works for the Mombasa GPO in Mvita (the island/Old Town), it won’t cut it for other areas. The county is divided into 6 sub-counties (Mvita, Nyali, Kisauni, Changamwe, Jomvu, and Likoni), each with distinct postal codes. Therefore, using the wrong code can delay your mail by days or even weeks.

What Are Mombasa Postal Codes?

Mombasa Postal Code is 80100. It uses the postal region prefix 80, which identifies it as part of the Coast postal region managed by Posta Kenya. This differs from Nairobi’s 00 prefix, Nakuru’s 20 prefix, or Kisumu’s 40 prefix. The format follows Kenya’s postal code standard five-digit structure: the first two digits (80) represent the broader Coast region. In comparison, the final three digits pinpoint the specific post office or delivery zone.

For example, 80100 breaks down as:

80 = Coast region (Mombasa County)
100 = Mombasa Town GPO (General Post Office)

All 6 Mombasa Sub-Counties and Their Postal Codes

Mombasa County is divided into 6 constituencies for administrative purposes, and each constituency also comes with its own postal codes vital for the sorting and delivery of mail on time:

Sub-County	Main Postal Code	Population (Approx.)	Key Areas
Mvita	80100	200,000+	Mombasa Island, Fort Jesus, Old Town, CBD
Changamwe	80100, 80110, 80115	180,000+	Port Reitz, Miritini, Industrial Area
Jomvu	80100, 80105	150,000+	Mikindani, Magongo
Kisauni	80100, 80118, 80119	250,000+	Bamburi, Nyali, Mtwapa, Shanzu
Likoni	80100, 80109	170,000+	Likoni Town, Shelly Beach, Tiwi
Nyali	80100, 80106	120,000+	Nyali Estate, Links Road, Mamba Village

Mvita Sub-County – (80100, 80102, 80103)

Mvita is Mombasa’s historic heart and administrative center. The sub-county mainly uses the Mombasa Town GPO (80100), which handles most official correspondence.

The main Mvita Postal Codes are as follows:

• 80100 – Mombasa Town GPO (General Post Office)
• 80102 – Mombasa Island Post Office
• 80103 – Shimanzi Post Office

Changamwe Sub-County – (80100, 80110, 80115)

Changamwe is Mombasa’s industrial zone on the mainland. It is the Home to the port, refineries, and major warehouses in the County.

The primary Changamwe Postal Codes are as follows:

• 80100 – Changamwe Town (shared with main GPO)
• 80110 – Port Reitz Post Office
• 80115 – Miritini Post Office

Jomvu Sub-County – (80100, 80105)

Jomvu covers parts of mainland Mombasa, including Mikindani. The following are the Key areas covered:

• 80100 – Jomvu Town (shared with main GPO)
• 80105 – Mikindani Post Office

Kisauni Sub-County – (80100, 80118, 80119)

Kisauni is Mombasa’s most populous sub-county on the northern mainland. It covers Areas like Bamburi, Nyali, and Mtwapa, which fall here, with separate codes for different zones.

• 80100 – Kisauni Town (shared with main GPO)
• 80118 – Bamburi Post Office
• 80119 – Nyali Post Office

Likoni Sub-County – (80100, 80109)

Likoni sits on the southern mainland, connected to Mombasa Island by the famous Likoni Ferry. This sub-county covers Shelly Beach and the south coastal area.

The Key Likoni Postal Codes are as follows:

• 80100 – Likoni Town (shared with main GPO)
• 80109 – Likoni Post Office

Nyali Sub-County – (80100, 80106)

Nyali is one of Mombasa’s most affluent areas with upscale residential estates, shopping malls, and beach resorts. The Key Postal offices serving Nyali are as follows.

• 80100 – Nyali Town (shared with main GPO)
• 80106 – Nyali Bridge Post Office

Complete List of Mombasa Post Offices

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

Post Office Name	Postal Code	Sub-County	Location	Services
Mombasa Town GPO	80100	Mvita	Digo Road, CBD	Full service, P.O. Boxes, EMS
Mombasa Island	80102	Mvita	Mombasa Island	Mail delivery, parcels
Shimanzi	80103	Mvita	Shimanzi Area	Local mail, parcels
Mikindani	80105	Jomvu	Mikindani	P.O. Boxes, mail delivery
Nyali Bridge	80106	Nyali	Nyali Bridge Area	Full service, P.O. Boxes
Likoni	80109	Likoni	Likoni Ferry Area	Mail delivery, parcels
Port Reitz	80110	Changamwe	Port Area	Commercial mail, cargo
Miritini	80115	Changamwe	Miritini Town	Local mail, business service
Bamburi	80118	Kisauni	Bamburi Estate	P.O. Boxes, mail delivery
Nyali	80119	Kisauni	Nyali Estate	Full service, residential

Mombasa Post Office Hours

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

• Weekdays (Monday – Friday): 8:00 AM – 5:00 PM
• Saturday: 9:00 AM – 12:00 PM
• Sunday and Public Holidays: Closed

How to Use Mombasa Postal Codes Correctly

Postal codes are essential for the sorting and delivery of mail on time, but also knowing how to use them correctly will facilitate such a process even more. Just like how you write and format the Nairobi Postal address, the same format is applied when addressing mail in Mombasa County:

Standard P.O. Box Address Format

Correct format:
[Recipient Name]
P.O. Box [Number]-[Postal Code] [Town/Sub-County]
[KENYA]

Example 1: Mombasa Island Address

John Kamau

P.O. Box 1234-80100, Mombasa

Kenya

Example 2: Port Reitz (Changamwe) Address

ABC Shipping Ltd.

P.O. Box 5678-80110, Port Reitz

Mombasa, Kenya

Example 3: Nyali Residential Address

Mary Wanjiru

P.O. Box 9012-80106, Nyali

Mombasa, Kenya

Where To Pay Attention: Always include the recipient’s full name on the first line. The hyphen between the box number and the postal code is mandatory (234-80100 is the correct format, not 234 80100). Include the town/sub-county name after the postal code for clarity. Add “KENYA” on the last line for international mail.

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

The application process to get your own P.O. Box in Mombasa is an easy process, thanks to changes that Posta Kenya has made in the previous years. The application process is now entirely online, whereby you can complete everything from your phone or computer. Before you apply for one, you need to understand that Posta Kenya offers two types of P.O. Boxes, and your choice affects costs, collection methods, and what you can use the address for.

First, there is the Physical P.O. Box (Traditional Metal Box), where, if you apply for one, you get physical keys, a designated box number, and a secure slot at your chosen post office. Lastly, there’s the Virtual P.O. Box (MPost ) whereby your phone number becomes your postal address. Upon applying, you don’t get a physical box or keys; instead, you get just SMS alerts when mail arrives, and then you visit your chosen post office with your ID to collect.

All Postal Box Applications in Kenya, including for Mombasa Postal offices, are done via the Posta Kenya Application Portal at: https://apps.posta.co.ke/boxupdate/

Frequently Asked Questions (FAQs)