Add a GeoJSON polygon
Style a polygon with the fill layer type.
<!DOCTYPE html><html><head><meta charset="utf-8"><title>Add a GeoJSON polygon</title><meta name="viewport" content="initial-scale=1,maximum-scale=1,user-scalable=no"><link href="https://api.mapbox.com/mapbox-gl-js/v2.1.1/mapbox-gl.css" rel="stylesheet"><script src="https://api.mapbox.com/mapbox-gl-js/v2.1.1/mapbox-gl.js"></script><style>body { margin: 0; padding: 0; }#map { position: absolute; top: 0; bottom: 0; width: 100%; }</style></head><body><div id="map"></div><script> // TO MAKE THE MAP APPEAR YOU MUST // ADD YOUR ACCESS TOKEN FROM // https://account.mapbox.com mapboxgl.accessToken = '<your access token here>';var map = new mapboxgl.Map({container: 'map',style: 'mapbox://styles/mapbox/streets-v11',center: [-68.13734351262877, 45.137451890638886],zoom: 5}); map.on('load', function () {map.addSource('maine', {'type': 'geojson','data': {'type': 'Feature','geometry': {'type': 'Polygon','coordinates': [[[-67.13734351262877, 45.137451890638886],[-66.96466, 44.8097],[-68.03252, 44.3252],[-69.06, 43.98],[-70.11617, 43.68405],[-70.64573401557249, 43.090083319667144],[-70.75102474636725, 43.08003225358635],[-70.79761105007827, 43.21973948828747],[-70.98176001655037, 43.36789581966826],[-70.94416541205806, 43.46633942318431],[-71.08482, 45.3052400000002],[-70.6600225491012, 45.46022288673396],[-70.30495378282376, 45.914794623389355],[-70.00014034695016, 46.69317088478567],[-69.23708614772835, 47.44777598732787],[-68.90478084987546, 47.184794623394396],[-68.23430497910454, 47.35462921812177],[-67.79035274928509, 47.066248887716995],[-67.79141211614706, 45.702585354182816],[-67.13734351262877, 45.137451890638886]]]}}});map.addLayer({'id': 'maine','type': 'fill','source': 'maine','layout': {},'paint': {'fill-color': '#088','fill-opacity': 0.8}});});</script> </body></html>