National Register of Historic Places listings in Iowa

This is a list of properties and historic districts in Iowa that are listed on the National Register of Historic Places. There are listings in all of Iowa's 99 counties, adding up to over 2,300 total.

Current listings by county
The following are approximate tallies of current listings by county. These counts are based on entries in the National Register Information Database as of April 24, 2008 and new weekly listings posted since then on the National Register of Historic Places web site. There are frequent additions to the listings and occasional delistings and the counts here are approximate and not official. New entries are added to the official Register on a weekly basis. Also, the counts in this table exclude boundary increase and decrease listings which modify the area covered by an existing property or district and which carry a separate National Register reference number. The numbers of NRHP listings in each county are documented by tables in each of the individual county list-articles.



Adams County

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Former listing

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Butler County

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Chickasaw County

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Former listing

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Clarke County

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Former listing

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Decatur County

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Emmet County

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Grundy County

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Guthrie County

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Former listings

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Hamilton County

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Howard County

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Former listing

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Humboldt County

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Former listing

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Ida County

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Former listings

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Kossuth County

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Former listings

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Louisa County

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Former listing

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Mills County

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O'Brien County

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Osceola County

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Palo Alto County

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Pocahontas County

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Ringgold County

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Former listings

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Sioux County

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Taylor County

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Union County

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Wayne County

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Winnebago County

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Former listings

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Worth County

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