| Longfellow, Pennsylvania | |
| Settlement Type: | census-designated place |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Pennsylvania |
| Subdivision Type2: | County |
| Subdivision Name2: | Mifflin |
| Unit Pref: | Imperial |
| Area Footnotes: | [1] |
| Area Total Km2: | 1.67 |
| Area Land Km2: | 1.67 |
| Area Water Km2: | 0.00 |
| Population As Of: | 2020 |
| Population Footnotes: | [2] |
| Population Total: | 183 |
| Population Density Km2: | 109.68 |
| Timezone: | Eastern (EST) |
| Utc Offset: | -5 |
| Timezone Dst: | EDT |
| Utc Offset Dst: | -4 |
| Postal Code Type: | ZIP codes |
| Blank Name: | FIPS code |
| Blank Info: | 42-44528 |
| Blank1 Name: | GNIS feature ID |
| Area Total Sq Mi: | 0.64 |
| Area Land Sq Mi: | 0.64 |
| Area Water Sq Mi: | 0.00 |
| Population Density Sq Mi: | 284.16 |
Longfellow is a census-designated place[3] located in Bratton Township, Mifflin County in the state of Pennsylvania, United States. It is located along Pennsylvania Route 103 in southern Mifflin County. As of the 2010 census,[4] the population was 215 residents.