{ "customLayers": [ { "name": "ACS Census Tracts", "id": 0, "data download link": "https://geodata.md.gov/imap/rest/directories/arcgisoutput/DEMO_AmericanCommunitySurveyTracts_MDP.zip" }, { "name": "ACS ZIP Code Tabulation Areas - ZCTAs", "id": 1, "data download link": "https://geodata.md.gov/imap/rest/directories/arcgisoutput/DEMO_AmericanCommunitySurveyZCTA_MDP.zip" } ] }