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 '''Prince Frederick''' is a [[census-designated place]] (CDP) in [[Calvert County, Maryland|Calvert County]], [[Maryland]], [[United States]], not to be confused with the incorporated, and much larger, city of [[Frederick, Maryland|Frederick]] some 70 miles to serves as the northwest in [[Frederick County]]county seat. The population was 1,432 at the 2000 census, although the population is believed to have grown substantially since then. It is the [[county seat]] of [[Calvert County, Maryland|Calvert County]]{{GR|6}}.

*Fire-rescue: Prince Frederick has its own Volunteer Fire Department and Rescue Squad. Prince Frederick is served by one [[hospital]], [[Calvert Memorial Hospital]], which moved into its current facility in 1978.

*High school: There is one public [[high school]] in Prince Frederick, [[Calvert High School (Prince Frederick, Maryland)|Calvert High School]], with the mascot being the Cavaliers. In 2000, the Cavaliers won the Maryland Division 3A high school football championship. Prince Frederick also has a public middle school and public elementary school.

*College: In 2005, the [[Calvert County]] branch of The [[College of Southern Maryland]] opened its new Prince Frederick campus.

*Houses of worship: Several churches and other religious institutions call Prince Frederick home. These include [[St. John Vianney [[CatholicChurch]] Church, [[St. Paul's [[ECUSA|EpiscopalChurch]] Church, [[Trinity United [[MethodistChurch]] Church, First [[First Baptist]] Church of Calvert County]], and the [[Southern Maryland [[IslamicCenter]] Center.

*Commerce: Prince Frederick is considered [[Calvert County]]'s main commercial and retail hub, as it contains at least five major [[shopping centers]], numerous chain and independent [[restaurants]], three [[hotels]], and [[Calvert County]]'s only [[movie theater]] currently operating to date.

*Business and industry: While many in the Prince Frederick area [[commute]] to jobs all over the [[Baltimore-Washington Metropolitan Area]], there are several small companies based in Prince Frederick itself. On the western side of Prince Frederick, there is a large [[industrial park]] which attracted numerous businesses and places of commerce after offering free land sites. One such business is [[Recorded Books, L.L.C.]], the largest independent publisher of unabridged audio books in the world.{{Fact|date=November 2007}}

*Newspapers: Two local weekly newspapers are published in Prince Frederick, the [[Calvert Independent ]] and the [[Calvert Recorder]].

*Recreation: In 2007, plans for [[Calvert County]]'s first public indoor aquatic center, to be built in Prince Frederick, were finalized.

*Notable places in the Prince Frederick area include [[Battle Creek Cypress Swamp]]-- a local nature preserve-- and the [[Arthur Storer]] [[Planetarium]], which is located on the grounds of [[Calvert High School]].

*The [[Calvert County Fair ]] is held every fall at the Calvert County Fairgrounds[http://www.calvertcountyfair.com] just outside Prince Frederick. The fair moved from its original location in downtown Prince Frederick in 1994.

*Prince Frederick's "Giant Triangle": Located on the eastern side of town, there is a very large, triangular retention pond at the site of the Prince Frederick [[Wastewater]] Treatment Plant.<ref>{{Cite web|url=http://www.wikimapia.org/83293//|author=Wikimapia.com|title=Wastewater Treatment Plant}}</ref>. Final approval for the plant was obtained in December 2000.<ref>{{Cite web|url=http://www.acltweb.org/CurrentNews/Position.cfm//|author=American Chesnut Land Trust|title=Position Statement of the American Chestnut Land Trust

Wastewater Treatment Plant}}</ref>. The plant's strange UFO-like appearance--approximately 500 feet long per side and location in a secluded and heavily wooded area--in satellite imagery on [[Google Earth]] has evoked the curiosity of many locals, who have nicknamed the site the "Giant Triangle" and speculated on its purpose.<ref>{{Cite web|url=http://www.flickr.com/photos/sevensixfive/sets/72157594482068727/|author=Sevensixfive at Flickr.com|title=Giant Triangle set photos}}</ref>.