Indiana · United States
New Castle population
17,621people · latest figure
New Castle has a population of 17,621, making it the 2521st largest place we list in United States. It is in Indiana.
New Castle holds under a tenth of one per cent of United States's 349,035,494 people. New York City, the largest place we list there, is 500 times its size. Twenty years earlier the World Gazetteer recorded 24,652, a fall of 29%.
The 2005 figure comes from the World Gazetteer archive restored on this site. The two sources may draw the settlement's boundary differently, so treat the change as indicative rather than exact. Why figures differ.
New Castle is in Indiana, which has 493 recorded places.
Nearby in size
| Place | Region | Population |
|---|---|---|
| Ocean Springs | Mississippi | 17,636 |
| Hinsdale | Illinois | 17,628 |
| Brightwood | District of Columbia | 17,624 |
| Winthrop | Massachusetts | 17,618 |
| Lindenwold | New Jersey | 17,613 |
| Bay City | Texas | 17,598 |
All places in United States → · Indiana →
Figures are the latest available in GeoNames (CC BY 4.0), which draws on national censuses of varying dates — treat them as recent, not same-year. Country totals are UN World Population Prospects 2024 (medium variant) where the UN lists the country separately; the handful it reports under a parent state keep a GeoNames figure and are marked as such. Sources & method.