New Castle Population

1890–2026

4,907

2026 projection

0.1% since 2020 (decrease)

01K2K3K4K5K1900192019401960198020002020

Source: U.S. Census Bureau decennial counts and annual estimates. 2026 is a projection. Values between recorded years are interpolated.

Use the left and right arrow keys to inspect population observations.

Population by year

Population estimates for New Castle. Annual change is shown as a percentage. Growth is the total change since the preceding observation.
20264,907+110.22%
20254,896-621.25%
20244,958+511.04%
20234,907+450.93%
20224,862-190.39%
20214,881-330.67%
20204,914-701.40%
20194,984+50.10%
20184,979+2114.43%
20174,768+811.73%

Showing 10 of 29 years.

New Castle Demographics

38.7median age

Median age

Female40.4 yrs
Male34.8 yrs

Adults

3,591
775 seniors · 22%2,816 other adults

Sex

Female 50.4% · 2,460Male 49.6% · 2,420

U.S. Census Bureau, 2024 ACS 5-year estimates · Table S0101

Race and ethnicity

Tap a square or a group below to highlight it.

Each square is about 1% of residents (roughly 49 people).

Hispanic or Latino residents can be of any race. All other groups exclude Hispanic residents.

U.S. Census Bureau, 2024 ACS 5-year estimates · Table B03002

New Castle Income

$80,084median household income

Median household income

$80,084

Half of households earn more, half earn less

Median earnings

$65,647

Typical yearly pay for a worker 25 or older.

Poverty rate

6.2%

About 1 in 16 residents

U.S. Census Bureau, 2024 ACS 5-year estimates · Tables S1901, S1501, S1701

New Castle Marital Status

56% of residents age 15 and older are married.

MarriedNever married
Overall
Male
Female
Marital status of residents age 15 and older
StatusOverallMaleFemale
Married56%59%53%
Never married24%36%13%
Divorced10%6%15%
Widowed9%0%17%
Separated1%0%2%

U.S. Census Bureau, 2024 ACS 5-year estimates · Table S1201