| Official Name: | Philadelphia, Missouri |
| Settlement Type: | Census-designated place |
| Pushpin Map: | Missouri#USA |
| Pushpin Label: | Philadelphia |
| Pushpin Label Position: | left |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Missouri |
| Subdivision Type2: | County |
| Subdivision Name2: | Marion |
| Unit Pref: | Imperial |
| Area Footnotes: | [1] |
| Area Total Km2: | 1.96 |
| Area Land Km2: | 1.96 |
| Area Water Km2: | 0.00 |
| Area Total Sq Mi: | 0.76 |
| Area Land Sq Mi: | 0.76 |
| Area Water Sq Mi: | 0.00 |
| Population As Of: | 2020 |
| Population Footnotes: | [2] |
| Population Total: | 206 |
| Population Density Km2: | 105.00 |
| Population Density Sq Mi: | 272.13 |
| Elevation Ft: | 709 |
| Postal Code Type: | ZIP code |
| Postal Code: | 63463[3] |
| Area Code: | 573 |
| Blank Name: | FIPS code |
| Blank Info: | 29-57350 |
| Blank1 Name: | GNIS feature ID |
| Blank1 Info: | 2806414 |
Philadelphia is an unincorporated community and census-designated place in western Marion County, Missouri, United States. It is located west of Palmyra on Missouri Route 168. The community is part of the Hannibal Micropolitan Statistical Area.
Philadelphia was platted in 1835.[4] The community was named after Philadelphia, Pennsylvania.[5] A post office called Philadelphia has been in operation since 1847.[6]
Philadelphia was first listed as a census-designated place for the 2020 census, at which time it had a population of 206.[2]
Philadelphia is in western Marion County, west of Palmyra, the county seat, north of Monroe City, east of Shelbyville, and south of Ewing. Hannibal, the largest city in Marion County, is to the southeast on the Mississippi River.
According to the U.S. Census Bureau, the Philadelphia CDP has an area of 0.76sqmi, all land.[1] The community drains north to a tributary of the South Fabius River and south to a tributary of the North River. Both rivers flow east to the Mississippi.