On Reddit, location targeting such as country or DMA is based upon…

Reddit's location targeting, including country or Designated Market Area (DMA), is dynamic and based on the user's current IP address at the time the ad is served. This ensures that ads are relevant to where the user is physically located at that moment. The location set in a user's profile or chosen during account creation is static and may not reflect their current whereabouts, making it less effective for precise, real-time geographic targeting. While communities a user joins might have a geographic focus, this is an indirect indicator and not the primary mechanism for location targeting on the platform.