Domestic solid waste generation and composition data for 103 households in Kampala City, Uganda, collected over a seven-day measurement campaign in three parishes representing different income levels (Bwaise I, low income; Bukoto I, middle income; Ggaba, high income). Includes ten measured waste-category masses, derived per-household metrics, and household socio-economic characteristics. The data accompany the manuscript "Quantity and Composition of Domestic Solid Waste in Kampala City as Influenced by Socio-Economic Factors" (Katukiza et al., Makerere University). To cite package "solidwastekampala" in publications use: