Determining the spatial organization of odorant receptor gene expression in olfactory bulb glomeruli is critical for understanding the functional organization of the olfactory bulb. However, the identity of only a few glomeruli have been mapped thus far. Here, we use spatial transcriptomics to develop a comprehensive map of glomerular identity and domain structure in the mouse olfactory bulb. We developed experimental protocols for efficient odorant receptor transcript capture on barcoded spatial arrays, and we collected tissue sections from an entire olfactory bulb for RNA sequencing. We will present an initial description of the three dimensional organization of odorant receptor and domain marker gene expression in the olfactory bulb. Finally, we will discuss the diversity of olfactory bulb output neurons, mitral and tufted cells, and the preferential connectivity of molecularly defined mitral and tufted cell subtypes with cortical target areas. Our data provide a rich new resource for understanding the molecular mechanisms of olfactory map assembly and its function in odor processing.