Mavoko is the commercial and industrial hub of the County spanning an estimated area of 852 Km2. Its population was 137,211 in the 2009 census, and was set to grow to 178,131 by end of 2018, and further to 200,041 by 2022. Its proximity to Nairobi (28 km) ensures it enjoys the trickle-down effects of Nairobi’s city status. A substantial number of its population, mostly the middle-income group, works in the City.

Industries within the municipality include cement factories, steel mills, export processing zone companies and transport and logistics companies. Key social amenities within close proximity include a University, shopping malls, hospitals, the Standard Gauge Railway (SGR) and the Jomo Kenyatta International Airport (JKIA).