|Town of Nunn, Colorado|
Looking west from Logan Street towards U.S. 85 in Nunn, Colorado
Location of Nunn shown within Colorado
|Incorporated (town)||March 28, 1908|
|• Type||Statutory Town|
|• Mayor||Tom Bender|
|• Mayor Pro Tem||Julie jensen|
|• Total||1.8 sq mi (4.6 km2)|
|• Land||1.8 sq mi (4.6 km2)|
|• Water||0.0 sq mi (0.0 km2) 0.0%|
|Elevation||5,177 ft (1,578 m)|
|• Density||266.7/sq mi (102.7/km2)|
|Time zone||MST (UTC-7)|
|• Summer (DST)||MDT (UTC-6)|
|GNIS feature ID||0204688|
Nunn is located at .
According to the United States Census Bureau, the town has a total area of 1.8 square miles (4.7 km2), all of it land.
As of the census of 2000, there were 471 people, 158 households, and 118 families residing in the town. The population density was 266.7 people per square mile (102.7/km²). There were 174 housing units at an average density of 98.5 per square mile (38.0/km²). The racial makeup of the town was 78.98% White, 0.42% African American, 1.91% Native American, 0.21% Asian, 14.86% from other races, and 3.61% from two or more races. Hispanic or Latino of any race were 24.84% of the population.
There were 158 households out of which 38.6% had children under the age of 18 living with them, 62.7% were married couples living together, 7.6% had a female householder with no husband present, and 24.7% were non-families. 22.8% of all households were made up of individuals and 8.9% had someone living alone who was 65 years of age or older. The average household size was 2.98 and the average family size was 3.50.
In the town the population was spread out with 33.5% under the age of 18, 7.4% from 18 to 24, 31.0% from 25 to 44, 16.3% from 45 to 64, and 11.7% who were 65 years of age or older. The median age was 31 years. For every 100 females there were 101.3 males. For every 100 females age 18 and over, there were 96.9 males.
The median income for a household in the town was $35,714, and the median income for a family was $40,357. Males had a median income of $27,292 versus $21,875 for females. The per capita income for the town was $14,769. About 17.2% of families and 19.0% of the population were below the poverty line, including 24.8% of those under age 18 and 9.4% of those age 65 or over.
In October 2006, Vancouver-based Powertech (USA) Inc. announced preliminary plans to mine uranium by in-situ leaching and possibly open-pit mining from a deposit in sandstones of the Fox Hills Formation several miles west of Nunn.
Some local residents have formed Coloradoans Against Resource Destruction (C.A.R.D.) to oppose the proposed mining. They and a landowners' organization called "Stewards of the Land" (SOTL) point out that the proposed mining area is only six miles northeast of the Fort Collins city limit, and that the Fox Hills Formation is a major water-supply aquifer. C.A.R.D. and SOTL dispute the safety of both in-situ leaching and open-pit mining for uranium.
On July 19, 2007, Powertech held an informational meeting at the Nunn Community Center.
Nunn is the home of Greenfaith Ministry, the nation's first cannabis sacrament church and charity.
About a third of the town's budget is generated by citations written by its police department. 
- Outline of Colorado
- State of Colorado
- in-situ leaching
- open-pit mining
- uranium mining
- uranium mining in Colorado
- "Active Colorado Municipalities". State of Colorado, Department of Local Affairs. Retrieved 2007-09-01.
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- "Post offices". Jim Forte Postal History. Retrieved 6 July 2016.
- Dawson, John Frank. Place names in Colorado: why 700 communities were so named, 150 of Spanish or Indian origin. Denver, CO: The J. Frank Dawson Publishing Co. p. 37.
- "US Gazetteer files: 2010, 2000, and 1990". United States Census Bureau. 2011-02-12. Retrieved 2011-04-23.
- "Annual Estimates of the Resident Population for Incorporated Places: April 1, 2010 to July 1, 2015". Retrieved July 2, 2016.
- "Census of Population and Housing". Census.gov. Retrieved June 4, 2015.
- "American FactFinder". United States Census Bureau. Retrieved 2008-01-31.
- "Another Tax Exempt Marijuana Church". Forbes. Retrieved 27 June 2015.
- Jones, Tim (22 October 2015). [*Charlack Police Department "Police Agencies Fold in St. Louis Area as Ticket Blitzes Stop"] Check
|url=value (help). Bloomberg. Retrieved 23 October 2015.