Source: Public Records Aggregators · Commercial Data Providers · Consumer Data Sources Our search returned 191 contact records for William Mercer across 32 states. The most recent address on file is in West Chester, Pennsylvania. Of these records, 141 include phone numbers and 80 include email addresses. Ages range from 42 to 98, which may indicate multiple individuals sharing this name. Records are compiled from government agencies and commercial data sources. Data accuracy varies by source.