These datasets and model equations support the system dynamics modelling of the Dagaa value chain in Zanzibar. The model comprises seven modules incorporating 24 sectors, with a total of 736 variables containing 1,755 elements. It includes 21 stocks, 52 flows, and 663 converters, along with 117 constants and 598 equations, as well as a graphical representation of one of the variables. The data used to construct the model were gathered from a combination of primary and secondary sources.