| Mount Aetna, Pennsylvania | |
| Settlement Type: | Census-designated place |
| Image Blank Emblem: | Mount Aetna, PA Keystone Marker.jpg |
| Blank Emblem Type: | Keystone Marker |
| Blank Emblem Size: | 250px |
| Blank Emblem Link: | Keystone Markers |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Pennsylvania |
| Subdivision Type2: | County |
| Subdivision Name2: | Berks |
| Subdivision Type3: | Township |
| Subdivision Name3: | Tulpehocken |
| Unit Pref: | Imperial |
| Area Footnotes: | [1] |
| Area Total Km2: | 1.28 |
| Area Land Km2: | 1.28 |
| Area Water Km2: | 0.00 |
| Population As Of: | 2020 |
| Population Footnotes: | [2] |
| Population Total: | 489 |
| Population Density Km2: | 381.55 |
| Timezone: | Eastern (EST) |
| Utc Offset: | -5 |
| Timezone Dst: | EDT |
| Utc Offset Dst: | -4 |
| Postal Code Type: | ZIP codes |
| Postal Code: | 19544 |
| Blank Name: | FIPS code |
| Blank Info: | 42-51320 |
| Blank1 Name: | GNIS feature ID |
| Area Total Sq Mi: | 0.50 |
| Area Land Sq Mi: | 0.49 |
| Area Water Sq Mi: | 0.00 |
| Population Density Sq Mi: | 987.88 |
Mount Aetna is a census-designated place[3] in Tulpehocken Township, Berks County, Pennsylvania, United States. It is located along Pennsylvania Route 501 near the border of Lebanon County. The community is named after the active volcano, Mount Etna, in Sicily. As of the 2010 census, the population was 354 residents.[4]