Keystone Zip Codes - Benton County IA

Keystone, IA Zip Code Map

Keystone, IA is a city located in Benton County, Iowa and has a land area of 49.89 square miles (129.21 km2). The water area for the city is 0.00 square miles or 0.00 km2. There is one unique zip code in Keystone, Iowa and it is 52249. The area code(s) for Keystone is 319.

Zip Codes for Keystone, IA (1)
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52249 Keystone Benton

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