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Time Zone: Clay County lies in the Central Time Zone (CST/CDT) and observes daylight saving time.

The community of Spencer is the Seat for Clay County.

Clay County was founded January 15, 1851.

From the Census Estimates for 2009, <1> Clay had a population of 16,617 people. This is a decrease of 4.35% since the last Census (which gave a population of 17,372 people in 2000).

At the time of the 2000 Census, Clay represented 0.59% of the total population of Iowa, making it the state's 43rd most populous county (out of 99 counties).

The following table shows the recent changes in population. Other than 2000, the population counts have been estimated by the Census Bureau.

Since 2000
Year-to-Year Change
201016,667-4.06%+0.3% since 2009
200017,372The Last Census

More information can be found on the Clay County Census Page for Clay County.


Below are some of the communities located in Clay County (for more communities, please visit our Nearby Page for Clay County):

Community 2009
(2009vs. 2000)
Spencer   10,97511,3173.02% decrease  
Everly   6246473.55% decrease  
Royal   41647913.15% decrease  
Peterson   3363729.68% decrease  
Fostoria   2382303.48% increase  

Websites for Clay County

Official Website:   www.co.clay.ia.us/

If you know of a history or genealogy society whose interest includes Clay County, would you please send us the URL for their website? We would like to add their link to our Gazetteer. To contact us, please visit our Feedback Page.

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Footnotes ...

<1>On a yearly basis, the US Census Bureau creates an estimate of the county's population. Keep in mind that this is an estimate and not an actual count. The last physical count was the 2000 Census and the next count will be for the 2010 Census.

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<2>All Quarter-dollar coin images from the United States Mint.

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