With 4,880 people, New Castle is a city in Colorado. Since 2000 the city has more than doubled, up 2,896 people. There are 1,955 people per square mile. 73% of homes are owner-occupied. Getting to work takes 34 minutes on average. Poverty is uncommon here, at 6.2% of locals.
At a glance
Average income
median household income $80,084, near the US median
US median: $82,259
Mid-age
median age 38.7
US median: 38.9
Average education
32% hold a bachelor's degree
US average: 36%
Less affordable
home values up 41%, inflation adjusted
US median home: $376,019
Unique to this place
What stands out about New Castle
What changed most since 1990
Population698 → 4,880(+599%)US over the same years: +35%
Median home value (2024 dollars)$133,684 → $454,300(+240%)US over the same years: +67%
Hispanic share4.2% → 35.5%(+31.3 pts)US over the same years: +9.9 pts
Shares are "alone or in combination": a person with both Medicare and Medicaid counts in each, so categories overlap and do not sum to 100%.
Section 09 · Service history
Veterans
Veterans by period of service, 2024
Gulf War (2001 or later)53%(105)
US avg: 26.4%
Gulf War (1990s)8.1%(16)
US avg: 24.3%
Vietnam era26.3%(52)
US avg: 33.1%
Korean War0%(0)
US avg: 4.5%
World War II0%(0)
US avg: 1%
Share of the 198 veterans here. A veteran who served across eras counts in each, so shares can total more than 100%. Peacetime-only service is included in the total but not shown as an era.
BAR + DOT: THIS PLACE · TICK: US AVERAGE
Over time
New Castle, decade by decade
New Castle population, inflation-adjusted income and home value, education, and diversity by year
Year
Population
Median household income
Median home value
Bachelor's degree+
Diversity score
1990
698
$65,440
$133,684
11.3%
12.0
2000
1,984
$100,191
$321,340
32.2%
29.2
2010
4,518
$94,894
$421,214
21.7%
55.2
2020
4,923
$99,539
$466,393
35.6%
62.7
2024
4,880
$80,084
$454,300
32.1%
62.6
Census years come from the decennial census and the latest year from the American Community Survey, so part of any change between those two rows can reflect the different surveys. Dollar figures are adjusted for inflation to 2024 dollars; a figure ending in "+" was at the Census Bureau's reporting cap that year. The diversity score runs from 0 to 100; see how it's calculated.
