Data are only as reliable as the source! SparkMap acquires and analyzes data from more than 90 secondary sources. Secondary sources are typically very reliable and are supported by unbiased government agencies. For example, a large portion of our data comes to us from the United States Census. Other sources include agencies like the United States Department of Agriculture, Federal Emergency Management Agency, Behavioral Risk Factors Surveillance Survey, Centers for Disease Control and Prevention, and the United States Geological Survey.