query: SELECT DISTINCT ?item ?population 
  WHERE 
  {
    BIND ( wd:Q884 AS ?country )
    ?item wdt:P31/wdt:P279* wd:Q515 ; wdt:P17 ?country .
    OPTIONAL {?item wdt:P1082 ?population }
    MINUS { ?item wdt:P576 [] }
    SERVICE wikibase:label { bd:serviceParam wikibase:language "[AUTO_LANGUAGE],en". }
  }
  ORDER BY DESC(?population) ?itemLabel