Human gastrointestinal (GI) organoid technologies have transformed GI disease research. By recapitulating the essential steps that occur during embryonic organ development, we could generate in vitro human colonic organoids (HCOs) (Munera et al, Cell Stem Cell. 2017) and human intestinal organoids (HIOs) (Spence et al, Nature. 2011) from iPSCs. Interestingly, HCOs contain both epithelial and surrounding mesenchymal derivatives, including myofibroblasts and tissue-resident immune cells. Our preliminary data demonstrate that HCOs co-develop CD163 positive macrophages derived from the hemogenic endothelium that develops within the colonic mesenchyme.