A Google Maps CID (Customer ID) is a unique numerical identifier assigned to each business listing in Google Maps. This identifier remains constant even if the business name, address formatting, or category changes. Because the CID is tied directly to the listing in Google’s database, it allows users and tools to reliably locate the exact business record.
For marketing agencies, B2B sales teams, and recruiters, the Google Maps CID provides a stable reference point when collecting or managing large volumes of local business data. It helps avoid duplicates, ensures accurate data tracking, and allows teams to consistently monitor listings even when businesses update their information. This stability is especially useful when building prospect lists, enriching lead databases, or tracking local competitors.
Real-World Example:
For example, a marketing agency building a list of dentists from Google Maps using Outscraper can store each business’s Google Maps CID. If a clinic later changes its name or category, the CID still points to the same listing, ensuring the agency’s lead database remains accurate.