Possible Clues:

• The next U.S. one will be in 2020
• Count caught us hiding three bridge players
• Ten-yearly survey
• Saracen suspected accommodating count
• Population count in North and South America by church
• 2020 U.S. event
• Event for an enumerator
• Count wants to know can you speak Irish, for instance
• Official head count
• Sounds as if they feel like a Count