City in New Castle County, Delaware · 3.5 sq mi · 1,658 people per sq mi
About 5,800 people live in New Castle. The typical household earns $89,205, and the median resident is 48.5 years old.
2026 projection
From 5,538 in 2020
Poverty rate 4.66%
Men 43.8 · Women 49.8
1850–2026
5,766
2026 projection
4.1% since 2020 (increase)
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.
1850–2026
5,766
2026 projection
4.1% since 2020 (increase)
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.
| 2026 | 5,766 | +40 | 0.70% |
|---|---|---|---|
| 2025 | 5,726 | +27 | 0.47% |
| 2024 | 5,699 | +121 | 2.17% |
| 2023 | 5,578 | +45 | 0.81% |
| 2022 | 5,533 | +15 | 0.27% |
| 2021 | 5,518 | -20 | 0.36% |
| 2020 | 5,538 | +124 | 2.29% |
| 2019 | 5,414 | +42 | 0.78% |
| 2018 | 5,372 | +222 | 4.31% |
| 2017 | 5,150 | -19 | 0.37% |
Showing 10 of 33 years.
U.S. Census Bureau, 2024 ACS 5-year estimates · Table S0101
Each square is about 1% of residents (roughly 56 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
Half of households earn more, half earn less
Typical yearly pay for a worker 25 or older.
About 1 in 21 residents
46% of residents age 15 and older are married.
| Status | Overall | Male | Female |
|---|---|---|---|
| Married | 46% | 52% | 40% |
| Never married | 31% | 37% | 27% |
| Divorced | 15% | 9% | 21% |
| Widowed | 7% | 3% | 10% |
| Separated | 1% | <1% | 2% |
U.S. Census Bureau, 2024 ACS 5-year estimates · Table S1201
10 sources, all from the U.S. Census Bureau