2025 Compare Cities Health:
Potomac, MD vs Johnston, IA

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Highlights
- There are 262 physicians per 100,000 people in Johnston.
- There are 506 physicians per 100,000 people in Potomac.
- The US average is 210 physicians per 100,000 people.
 Potomac, MDJohnston, IAUnited States
 Air Quality (100=best)  Unlock73.358.4
 Water Quality (100=best)50  Unlock55
 Superfund Sites (100=best)  Unlock9186.9
 Physicians per Cap.506  Unlock210
 Health Cost  Unlock115100
   (100 = best)
Reviews for Potomac    2 Reviews

Over 17 years ago

Spring and Fall can be quite glorious when the leaves turn or the tulips pop out and the humidity is lower. Winter, while it has some splendid "snow days," goes on much  More

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Over 17 years ago

The Potomac area in Montgomery County, Maryland, has the best of everything. High schools rated in the top 5 in the State, easy access to the Nation's Capitol,  More

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Reviews for Johnston    2 Reviews

Over 6 years ago

Strong National Guard presence and very family-friendly. The library is the best one that I've ever visited. We moved here for the Army two years ago and will be leaving  More

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Over 16 years ago

Everyone here is rich. Really, really,  More

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