| Muir, Pennsylvania | |
| Settlement Type: | census-designated place |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Pennsylvania |
| Subdivision Type2: | County |
| Subdivision Name2: | Schuylkill |
| Unit Pref: | Imperial |
| Area Footnotes: | [1] |
| Area Total Km2: | 1.29 |
| Area Land Km2: | 1.29 |
| Area Water Km2: | 0.00 |
| Population As Of: | 2020 |
| Population Footnotes: | [2] |
| Population Total: | 429 |
| Population Density Km2: | 333.55 |
| Timezone: | Eastern (EST) |
| Utc Offset: | -5 |
| Timezone Dst: | EDT |
| Utc Offset Dst: | -4 |
| Postal Code Type: | ZIP codes |
| Blank Name: | FIPS code |
| Blank Info: | 42-52224 |
| Blank1 Name: | GNIS feature ID |
| Area Total Sq Mi: | 0.50 |
| Area Land Sq Mi: | 0.50 |
| Area Water Sq Mi: | 0.00 |
| Population Density Sq Mi: | 863.18 |
Muir is a census-designated place[3] located in Porter Township, Schuylkill County in the state of Pennsylvania, United States. Muir was part of the Reinerton-Orwin-Muir CDP at the 2000 census before splitting into three individual CDPs for the 2010 census. The other communities, along with Muir are Reinerton and Orwin. The community is located near the borough of Tower City along U.S. Route 209. As of the 2010 census,[4] the population was 451 residents.