Kenya’s economy is diverse, with its growth driven by various counties contributing differently to the overall Gross County Product (GCP). As of 2025, Nairobi remains the largest contributor with a GCP of $31.83 billion, followed by Kiambu and Nakuru. On the other hand, counties like Elgeyo Marakwet, Samburu, and Isiolo are among the smallest contributors. This article provides a breakdown of Kenyan counties by their Gross County Product, showcasing both the highest and lowest performers.
This is a List of Kenyan Counties by Gross County Product 2025 for the year 2024. As of 2024 , Nairobi is the main contributor to the economy with a GCP of $31 Billion . Kiambu ($6.36 B) , Nakuru ($5.98 B) , Mombasa ($5.51 B) and Meru ($4.08 B) are also among the largest economies in Kenya. On the lower end Elgeyo Marakwet County ($0.35 B) , Samburu ($0.35 B) and Isiolo ($0.36 B) have the lowest gdp. In terms of GDP Per Capita Nairobi stands out with a GDP Per Capita of $6,591. Mombasa follows closely with $4,114 . Nyeri ($2,635) , Embu ($2,590) , Nakuru County ($2,497) also are among the wealthiest counties in Kenya. Wajir ($664) and Mandera ($697) are the poorest in Kenya in terms of GDP Per Capita. GDP Per Capita is highly Concentrated in Mount Kenya region , Nairobi Metropolitan area and Central Rift valley and lowest in North Eastern Kenya. In terms of GDP growth rate, Tana River (8.4%) , Isiolo (7.9%) and Mandera (6.6%) have the highest GCP growth rate. On the other hand, Elgeyo Marakwet (0.4%) , Kitui (0.4%) have the lowest economic growth rate.[1]
