| Rank | County | Percentage White, Not Hispanic or Latino, Residents | 
|---|---|---|
| 1 | Garrett County, Maryland | 96.9% | 
| 2 | Carroll County, Maryland | 90.8% | 
| 3 | Allegany County, Maryland | 87.8% | 
| 4 | Queen Annes County, Maryland | 87.1% | 
| 5 | Cecil County, Maryland | 86.9% | 
| 6 | Washington County, Maryland | 82.2% | 
| 7 | Worcester County, Maryland | 80.2% | 
| 8 | Calvert County, Maryland | 79.5% | 
| 9 | Talbot County, Maryland | 78.8% | 
| 10 | Harford County, Maryland | 78.4% | 
| 11 | Kent County, Maryland | 78.2% | 
| 12 | Caroline County, Maryland | 77.8% | 
| 13 | Frederick County, Maryland | 77.0% | 
| 14 | St Marys County, Maryland | 76.0% | 
| 15 | Anne Arundel County, Maryland | 71.5% | 
| 16 | Wicomico County, Maryland | 65.7% | 
| 17 | Dorchester County, Maryland | 65.6% | 
| 18 | Baltimore County, Maryland | 61.4% | 
| 19 | Howard County, Maryland | 57.6% | 
| 20 | Somerset County, Maryland | 51.9% | 
| 21 | Montgomery County, Maryland | 47.8% | 
| 22 | Charles County, Maryland | 46.9% | 
| 23 | Baltimore city, Maryland | 28.2% | 
| 24 | Prince Georges County, Maryland | 14.8% | 
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