Philadelphia is an unincorporated community

Unincorporated area

In law, an unincorporated area is a region of land that is not a part of any municipality.To "incorporate" in this context means to form a municipal corporation, a city, town, or village with its own government. An unincorporated community is usually not subject to or taxed by a municipal government...

 in western Marion County, Missouri

Missouri

Missouri is a US state located in the Midwestern United States, bordered by Iowa, Illinois, Kentucky, Tennessee, Arkansas, Oklahoma, Kansas and Nebraska. With a 2010 population of 5,988,927, Missouri is the 18th most populous state in the nation and the fifth most populous in the Midwest. It...

, United States

United States

The United States of America is a federal constitutional republic comprising fifty states and a federal district...

. It is located about ten miles west of Palmyra

Palmyra, Missouri

Palmyra is a city in and the county seat of Marion County, Missouri, United States. The population was 3,467 at the 2000 census. It is part of the Hannibal Micropolitan Statistical Area.- Geography :Palmyra is located at...

 on Route 168. It was named for Philadelphia, Pennsylvania

Philadelphia, Pennsylvania

Philadelphia is the largest city in the Commonwealth of Pennsylvania and the county seat of Philadelphia County, with which it is coterminous. The city is located in the Northeastern United States along the Delaware and Schuylkill rivers. It is the fifth-most-populous city in the United States,...

. The community is part of the Hannibal

Hannibal, Missouri

Hannibal is a city in Marion and Ralls counties in the U.S. state of Missouri. Hannibal is located at the intersection of Interstate 72 and U.S. Routes 24, 36 and 61, approximately northwest of St. Louis. According to the 2010 U.S. Census the population was 17,606...

 Micropolitan Statistical Area

Hannibal micropolitan area

The Hannibal Micropolitan Statistical Area, as defined by the United States Census Bureau, is an area consisting of two counties in northeast Missouri, anchored by the city of Hannibal....

.

There is a small school district (Marion Co. RII) headquartered in Philadelphia. There is one school building which contains all grades (K-12). The school team is the Mustangs.

The community is connected by the Mark Twain Rural Telephone Company in Hurdland

Hurdland, Missouri

Hurdland is a city in Knox County, Missouri, United States. The population was 163 at the 2010 census.-Geography:Hurdland is located at .According to the United States Census Bureau, the city has a total area of , all of it land....

.

The community is served by a volunteer fire department and a fully equipped emergency medical response vehicle which is housed in a building constructed in 2004 and operated by EMTs and first responders who reside in and around the unincorporated area. Primary pre-hospital medical response is provided by the Marion County Ambulance District. Law enforcement is provided by the Marion County Sheriff's Office.