{"data":[{"jurisdictionTag":"county:25017","state":"MA","level":"county","geoid":"25017","fips":"25017","displayName":"Middlesex County","aliases":["Middlesex County","Middlesex"],"geometryKey":"MIDDLESEX","source":"ma-counties.geojson","caveat":""}],"meta":{"generatedAt":"2026-09-27T21:56:27.063Z","source":"canonical-jurisdictions","releaseId":null,"schemaVersion":"1.0.0","rowCount":1,"hasMore":false,"limit":250,"offset":0,"total":1,"registryCountyEquivalentCount":3144,"contract":"county:<five-digit Census GEOID>"}}