| Official Name: | Caln, Pennsylvania |
| Settlement Type: | Census-designated place |
| Mapsize: | 260px |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Pennsylvania |
| Subdivision Type2: | County |
| Subdivision Name2: | Chester |
| Subdivision Type3: | Township |
| Subdivision Name3: | Caln |
| Unit Pref: | Imperial |
| Area Footnotes: | [1] |
| Area Total Km2: | 2.09 |
| Area Land Km2: | 2.08 |
| Area Water Km2: | 0.01 |
| Area Total Sq Mi: | 0.81 |
| Area Land Sq Mi: | 0.80 |
| Area Water Sq Mi: | 0.00 |
| Population As Of: | 2020 |
| Population Total: | 1494 |
| Population Density Km2: | 717.33 |
| Population Density Sq Mi: | 1858.21 |
| Timezone: | Eastern (EST) |
| Utc Offset: | -5 |
| Timezone Dst: | EDT |
| Utc Offset Dst: | -4 |
| Elevation Ft: | 345 |
| Coordinates: | 39.9903°N -75.78°W |
| Postal Code Type: | ZIP Code |
| Postal Code: | 19320 (Coatesville, Pennsylvania) |
| Area Code: | 610 |
| Blank Name: | FIPS code |
| Blank Info: | 42-10816 |
| Blank1 Name: | GNIS feature ID |
| Blank1 Info: | 1170901 |
Caln is a census-designated place (CDP) in Caln Township, Chester County, Pennsylvania, United States. The population was 1,519 at the 2010 census.[2] It is located east of the city of Coatesville and lies west of Philadelphia.
Caln is located at .[3] The Lincoln Highway, also known as U.S. Route 30 Business, forms the southern edge of the CDP. Caln CDP extends north as far as Pennsylvania Route 340. According to the U.S. Census Bureau, the CDP has a total area of 2.1km2, all land.[4]