| Official Name: | MacDonnell Heights, New York |
| Settlement Type: | Census-designated place |
| Pushpin Map: | New York#USA |
| Pushpin Label: | MacDonnell Heights |
| Coordinates: | 41.7158°N -73.8592°W |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | New York |
| Subdivision Type2: | County |
| Subdivision Name2: | Dutchess |
| Subdivision Type3: | Town |
| Subdivision Name3: | Poughkeepsie |
| Area Footnotes: | [1] |
| Area Total Sq Mi: | 0.63 |
| Area Land Sq Mi: | 0.63 |
| Area Water Sq Mi: | 0.00 |
| Area Total Km2: | 1.63 |
| Area Land Km2: | 1.63 |
| Area Water Km2: | 0.00 |
| Population As Of: | 2020 |
| Population Density Km2: | 793.85 |
| Timezone: | Eastern (EST) |
| Utc Offset: | -5 |
| Timezone Dst: | EDT |
| Utc Offset Dst: | -4 |
| Elevation Ft: | 200 |
| Postal Code Type: | ZIP Code |
| Postal Code: | 12603 (Poughkeepsie) |
| Area Code: | 845 |
| Blank Name: | FIPS code |
| Blank Info: | 36-44105 |
| Blank1 Name: | GNIS feature ID |
| Blank1 Info: | 2806927 |
| Population Total: | 1291 |
| Unit Pref: | Imperial |
| Population Density Sq Mi: | 2055.73 |
MacDonnell Heights is a census-designated place (CDP) in the town of Poughkeepsie in Dutchess County, New York, United States. It was first listed as a CDP prior to the 2020 census.
The community is in western Dutchess County, in the northeastern section of the town of Poughkeepsie. It is bordered to the southeast by Wappinger Creek, across which is the town of LaGrange. The CDP includes the hamlets of MacDonnell Heights and Colonial Heights. U.S. Route 44 (Dutchess Turnpike) passes through the center of the CDP, leading west 4miles to the center of Poughkeepsie and northeast to Amenia.
It is in the Arlington Central School District,[2] which operates Arlington High School.