New Castle, IN micro area ZIP codes
The New Castle, IN micropolitan statistical area (CBSA 35220) covers 1 county in Indiana and 15 ZIP codes.
- ZIP codes
- 15
- Population
- 49,612
- Avg. median income
- $64,800population-weighted
- Counties
- 1
Click anywhere on the map to see which ZIP code it's in.
Counties in the New Castle, IN area
ZIP codes in the New Castle, IN area
| ZIP code | City | County | Population | Median income | Typical home value |
|---|---|---|---|---|---|
| 46148 | Knightstown | Henry County | 4,935 | $63,914 | $222,600 |
| 47337 | Dunreith | Henry County | 204 | $57,250 | $104,200 |
| 47344 | Greensboro | Henry County | 178 | — | $104,600 |
| 47351 | Kennard | Henry County | 397 | $57,813 | $158,100 |
| 47352 | Lewisville | Henry County | 974 | $66,250 | $216,700 |
| 47356 | Middletown | Henry County | 5,522 | $67,049 | $244,300 |
| 47360 | Mooreland | Henry County | 1,643 | $76,250 | $254,900 |
| 47361 | Mount Summit | Henry County | 271 | $53,333 | $158,800 |
| 47362 | New Castle | Henry County | 29,337 | $60,258 | $168,500 |
| 47366 | New Lisbon | Henry County | 26 | — | — |
| 47384 | Shirley | Henry County | 2,161 | $74,167 | $229,700 |
| 47385 | Spiceland | Henry County | 1,714 | $103,406 | $209,400 |
| 47386 | Springport | Henry County | 1,249 | $79,157 | $261,400 |
| 47387 | Straughn | Henry County | 603 | $86,818 | $195,500 |
| 47388 | Sulphur Springs | Henry County | 398 | $48,125 | $168,500 |
Population and median household income: ACS 2020–2024 5-year estimates. Typical home value: Zillow Home Value Index (September 2026) where available, otherwise the ACS median owner-reported value. "PO Box" marks ZIP codes with no delivery area of their own. Methodology
Frequently asked questions
How many ZIP codes are in the New Castle, IN micro area?
15 ZIP codes, based on each ZIP code's main county.
Which counties make up the New Castle, IN area?
Henry County.
What is an MSA?
A metropolitan statistical area (MSA) is a core city of 50,000+ people plus the surrounding counties tied to it by commuting, as defined by the U.S. Office of Management and Budget. Micropolitan areas have a core of 10,000–50,000. Together they are called core-based statistical areas (CBSAs).