Counties with the longest life expectancy in Maryland Stacker #10. Harford County - Life expectancy: 78.1 years--- 0.1 years higher than the state average #9. Carroll County - Life expectancy: 78.3 years--- 0.3 years higher than the state average #8. Calvert County - Life expectancy: 78.6 years--- 0.6 years higher than the state average #6. Talbot County (tie) - Life expectancy: 78.9 years--- 0.9 years higher than the state average #6. Anne Arundel County (tie) - Life expectancy: 78.9 years--- 0.9 years higher than the state average Risky reservoirs: Maryland counties where aging dams pose the greatest threat #5. Worcester County - Life expectancy: 79.1 years--- 1.1 years higher than the state average #4. Queen Anne's County - Life expectancy: 79.5 years--- 1.5 years higher than the state average #3. Frederick County - Life expectancy: 79.9 years--- 1.9 years higher than the state average #2. Howard County - Life expectancy: 82.5 years--- 4.5 years higher than the state average #1. Montgomery County - Life expectancy: 83.5 years--- 5.5 years higher than the state averageThis story features data reporting by Karim Noorani, writing by Kiersten Hickman, and is part of a series utilizing data automation across 50 states. How many people are receiving mental health treatment in Maryland Canva
