(ABRIDGED) We use the 17th data release of second phase Apache Point Observatory Galactic Evolution Experiment (APOGEE-2) to provide a homogenous census N-rich red giant stars across Milky Way (MW). report total 149 newly identified field giants toward bulge, metal-poor disk, and halo our Galaxy. They exhibit significant enrichment in their nitrogen abundance ratios ([N/Fe] $\gtrsim+0.5$), alon...