| Official Name: | Harlan, Indiana |
| Settlement Type: | Census-designated place |
| Mapsize: | 270px |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Indiana |
| Subdivision Type2: | County |
| Subdivision Name2: | Allen |
| Subdivision Type3: | Township |
| Subdivision Name3: | Springfield |
| Area Total Km2: | 8.04 |
| Area Land Km2: | 8.04 |
| Area Water Km2: | 0.00 |
| Population As Of: | 2020 |
| Population Total: | 1577 |
| Population Density Km2: | 196.14 |
| Timezone: | Eastern (EST) |
| Utc Offset: | -5 |
| Timezone Dst: | EDT |
| Utc Offset Dst: | -4 |
| Coordinates: | 41.1978°N -84.9231°W |
| Elevation Ft: | 787 |
| Postal Code Type: | ZIP code |
| Postal Code: | 46743 |
| Area Code: | 260 |
| Blank Name: | FIPS code |
| Blank Info: | 18-31432 |
| Blank1 Name: | GNIS feature ID |
| Blank1 Info: | 2629852 |
| Unit Pref: | Imperial |
| Area Footnotes: | [1] |
| Area Total Sq Mi: | 3.10 |
| Area Land Sq Mi: | 3.10 |
| Area Water Sq Mi: | 0.00 |
| Population Density Sq Mi: | 508.05 |
Harlan is an unincorporated census-designated place (CDP) in Springfield Township, Allen County, in the U.S. state of Indiana. As of the 2010 census, Harlan had a population of 1,634.[2]
Harlan was laid out in 1853 by Lewis Reichelderfer and Julia Ann (Ranck) Reichelderfer, who were husband and wife.[3] It originally consisted of two communities, Harlan and Maysville. The border between the two towns was Georgetown Road (Indiana State Road 37), with Harlan being on the north side of the road.[4]
The post office at Harlan has been in operation since 1851.[5] Maysville faded from existence soon afterwards.
Harlan is located on State Road 37, approximately northeast of Fort Wayne and 7miles west of the Ohio state line.
Harlan is within East Allen County Schools (EACS) and is zoned to Woodlan Elementary School and Woodlan Junior/Senior High School.[6] [7]