New Castle Flag

New Castle

County:
Garfield County
County Seat:
No
Area (mi²):
2.496
State:
Colorado

New Castle is a town located in Garfield County, Colorado. New Castle has a 2026 population of 4,885. New Castle is currently declining at a rate of -0.08% annually and its population has decreased by -0.53% since the most recent census, which recorded a population of 4,911 in 2020.

The median household income in New Castle is $80,084 with a poverty rate of 6.17%. The median age in New Castle is 38.7 years: 34.8 years for males, and 40.4 years for females. For every 100 females there are 98.4 males.

4.9K
Total Population
1,957
Density (mi²)
-4 -0.08%
Growth

New Castle Population

New Castle Population

Data after 2023 is projected based on recent change

Year ↓
Population
Growth
Annual Change
20264,885-4-0.08%
20254,889-5-0.1%
20244,894200.41%
20234,874220.45%
20224,852-28-0.57%
20214,880-31-0.63%
20204,911-4-0.08%
20194,98450.1%
20184,9792114.43%
20174,768811.73%
20164,6871142.49%
20154,573340.75%
20144,539-3-0.07%
20134,542110.24%
20124,531511.14%
20114,480-38-0.84%
20104,492-25-0.55%

Median Age

Overall: 38.7 years
Female: 40.4 years
Male: 34.8 years

New Castle Adults

There are 3,591 adults, (775 of whom are seniors) in New Castle.

Sex Ratio

Female: 2,460 (50.4%)
Male: 2,420 (49.6%)

Demographics

The racial composition of New Castle includes 71.54% White, 10.23% other race, and smaller percentages for and multiracial populations.

Population by Race

Race
Population ↓
Percentage (of total)
White3,49171.54%
Two or more races89018.24%
Other race49910.23%
Race
Population ↓
Percentage (of total)
Two or more races71914.73%
White51310.51%
Other race49910.23%
Race
Population ↓
Percentage (of total)
White2,97861.02%
Two or more races1713.5%

New Castle Marital Status

Economics and Income Statistics

New Castle 's average per capita income is $65,647. Household income levels show a median of $80,084. The poverty rate stands at 6.17%.

Families: A family includes the owner or renter of the home along with everyone related to them - whether through birth, marriage, or adoption. This includes relatives like spouses, children, parents, siblings, grandparents, and any other family members.
Households: A household includes all the people who occupy a housing unit (such as a house or apartment) as their usual place of residence.
Non Families: A nonfamily household is either someone living alone or when the owner/renter lives with people they aren't related to, like roommates.
Name
Median ↓
Mean
Married Families$131,953-
Families$123,365$139,927
Households$80,084$100,413
Non Families$41,004$52,968

$65,647

Average Income

$80,084

Median Household Income

6.17%

Poverty Rate

Nearby Cities

Sources

  1. US Census State Population Estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  2. US Census County Population Estimates - Most recent county estimates from the Census Bureau's Population Estimates Program
  3. American Community Survey (2009 - 2013)
  4. Census QuickFacts
  5. Historical Populations of States and Counties (1790 - 1990)