<p>Tidal marsh birds across the northern Gulf of Mexico face numerous natural and anthropogenic disturbances. Despite many species of concern inhabiting the area, baseline population estimates are lacking, limiting effective tidal marsh conservation planning. We estimated populations of Clapper Rails (<i>Rallus crepitans</i>), gallinules (<i>Gallinula galeata</i> and <i>Porphyrio martinicus</i>), Least Bitterns (<i>Ixobrychus exilis</i>), Marsh Wrens (<i>Cistothorus palustris</i>), Seaside Sparrows (<i>Ammospiza maritimus</i>), Red-winged Blackbirds (<i>Agelaius phoeniceus</i>), and Common Yellowthroats (<i>Geothlypis trichas</i>) across the Mississippi Gulf Coast. We tested for the effects of vegetation height, percent dominant vegetation, landscape heterogeneity, and proximity to open water, uplands, palustrine wetlands, and estuarine marsh on abundance. Tidal marsh bird abundances were often negatively associated with greater landscape heterogeneity, taller vegetation, and greater distance from open water. Seaside Sparrow and Clapper Rail abundances increased near estuarine marshes and with greater percent salt-tolerant vegetation but declined near uplands and palustrine wetlands. Contrastingly, Common Yellowthroats were more abundant near uplands and palustrine wetlands, and yellowthroats and gallinules were negatively associated with percent salt-tolerant vegetation. Managers should consider these species-specific differences to better implement management strategies. Overall, large expanses of tidal marsh spanning the salinity gradient will promote greater abundance for the tidal marsh bird community, but local vegetation structure and adjacent land cover types will need to be considered for specialists like Seaside Sparrows. Our robust monitoring and modelling framework can be expanded across the Gulf of Mexico, and we recommend this idea be considered by Gulf restoration practitioners and the conservation community across the region.</p>