County Court Records are generally the most accurate and are updated more regularly than most other sources but there are over 3,187 counties within the United States. Searching each county would be very costly and time consuming. Running a Residential History can help to identify the counties where a search subject may have resided and allow for county specific searches to be conducted but, that does not exclude the possibility that a person may have committed a crime in an area where he/she has not resided. So a broader coverage area is recommended to limit results that might otherwise have been missed.