Photograph courtesy of: Rose Starr


New Castle is nestled in the Colorado River Valley, at the western edge of the Rocky Mountains at an altitude of 5,550 feet above Sea Level. Our climate partakes of both the mountains and the high desert to the west. We have at least 260 days of sunlight per year. High temperatures in the summer can reach 90° and January lows can drop to 10°. The average lows in January are in the mid 20’s and the average highs in July are in the mid 70’s.

We have a dry climate, averaging 12 inches of rain and 39 inches of snow per year. The dry temperature makes both summer heat and winter cold more tolerable. On the other hand, we are very conscious of the need for water conservation.

An advantage of being in borderland is that we can easily drive to a different climate. Mesa County (and Utah) to the west is normally warmer in the winter. For those who don’t get enough snow, a trip to the Flat Tops or to a nearby ski area can fix that.

If it gets too hot in the summer, an hour’s drive to higher elevations (Flat Tops, Aspen, Vail) brings cooling relief.

We have no tornados, hurricanes or floods (though we do note the few areas of town in the 100-year flood zone). Drought is a possibility, and with drought there is fire danger. The Storm King fire in 1994 is a recent reminder of the power of a wildfire.

Current Weather


According to the 2010 US Census, New Castle has 4,518 citizens, more than double the population ten years earlier. That period of rapid growth has waned, but in 2014 we are seeing signs of growth again. The median resident age is 31, though in fact the town is home to a large retired population. The mean number is achieved by balancing the older population with the large number of children who are lucky enough to grow up in New Castle.


Population in 2012: 4,551 (98% urban, 2% rural)

Population change since 2000: +129.4%

Elevation: 5573

Land Area: 2.33 Square Miles

Population Density: 1951 people per Square Mile


Median resident age: 31.2 years
Colorado median age: 40.6 years

Estimated median household income in 2011: $63,878 (it was $55,000 in 2000) Estimated per capita income in 2011: $24,883

New Castle: $63,878
Colorado: $55,387

Estimated median house or condo value in 2011: $285,238 (it was $176,400 in 2000)

New Castle: $285,238
Colorado: $233,700

Mean prices in 2011: All housing units: $301,143; Detached houses: $312,277; Townhouses or other attached units: $279,370; In 3-to-4-unit structures: $2,148,996; In 5-or-more-unit structures: $111,748; Mobile homes: $99,735

Median gross rent in 2011: $1,323.

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