Health - Infant mortality (1) To resort data: click column headings. To download data: click here. County Name Number per 1,000 live births Rank Number per 1,000 live births Source: 1997-2020: Idaho Department of Health and Welfare (http://www.healthandwelfare.idaho.gov/Health/HealthStatistics/tabid/102/Default.aspx); 1997-2020: National Center for Health Statistics, Birth Data (http://www.cdc.gov/nchs/births.htm); and Death Data (http://www.cdc.gov/nchs/deaths.htm); DATE LAST UPDATED: April 12, 2023.