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The Commemorative
Quarter for
The Commemorative Quarter for Iowa

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

The community of Waterloo is the Seat for Black Hawk County.

Black Hawk County was founded February 17, 1843 and was created by taking area from DelawareCounty.

From the Census Estimates for 2009, <1> Black Hawk had a population of 129,276 people. This is an increase of 0.99% since the last Census (which gave a population of 128,012 people in 2000).

At the time of the 2000 Census, Black Hawk represented 4.37% of the total population of Iowa, making it the state's 4th 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
2010131,090+2.4%+1.4% since 2009
2009129,276+0.99%+0.97% since 2008
2000128,012The Last Census

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


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

Community 2009
(2009vs. 2000)
Waterloo   66,76168,7472.89% decrease  
Cedar Falls   38,71436,1457.11% increase  
Evansdale   5,0684,52611.98% increase  
La Porte City   2,3052,2751.32% increase  
Hudson   2,2012,1173.97% increase  

Websites for Black Hawk County

Official Website:   www.co.black-hawk.ia.us/

If you know of a history or genealogy society whose interest includes Black Hawk 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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