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The Commemorative
Quarter for
New Mexico
 
The Commemorative Quarter for New Mexico

Time Zone: Rio Arriba County lies in the Mountain Time Zone (MST/MDT) and observes daylight saving time.

The community of Tierra Amarilla is the Seat for Rio Arriba County.

Rio Arriba County is one of the original counties of New Mexico and was founded in 1852.

From the Census Estimates for 2009, <1> Rio Arriba had a population of 40,678 people. This is a decrease of 1.24% since the last Census (which gave a population of 41,190 people in 2000).

At the time of the 2000 Census, Rio Arriba represented 2.26% of the total population of New Mexico, making it the state's 13th most populous county (out of 33 counties).

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

YearPopulationChange
Since 2000
Year-to-Year Change
201040,246-2.29%-1.06% since 2009
200940,678-1.24%+0.17% since 2008
200840,609-1.41%-0.41% since 2007
200740,778-1% 
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200041,190The Last Census

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

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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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