Receptor for granulocyte colony-stimulating factor (CSF3). In addition it may function in some adhesion or recognition events at the cell surface. Homodimer. The dimeric receptor binds two CSF3 molecules. Interacts with CEACAM1; down-regulates the CSF3R-STAT3 pathway through recruitment of PTPN6 that dephosphorylates CSF3R (PubMed:21029969). Found in bone marrow. The WSXWS motif appears to be necessary for proper protein folding and thereby efficient intracellular transport and cell-surface receptor binding. The box 1 motif is required for JAK interaction and/or activation. N-glycosylated. Belongs to the type I cytokine receptor family. Type 2 subfamily.