Mutual, Maryland

The Christ Church is a historic Episcopal church located at Port Republic, Calvert County, Maryland, United States. The church is a three-bay-wide, five bays long, beige stucco covered structure featuring stained glass in most of the tall paired round-arched sash windows. It is the mother Episcopal Church of Calvert County and its oldest continually worshipping congregation. Middleham Chapel was started from this congregation as a Chapel of Ease. Christ Church Parish was one of the original 30 Anglican parishes in the Province of Maryland. Burials in the church cemetery include former U. S. Representative Thomas Parran Sr. and United States Coast Guard Admiral Merlin O'Neill. Christ Church was listed on the National Register of Historic Places in 1975.

Port Republic is a small, rural unincorporated community located at the crossroads of MD routes 2/MD 4, MD 264, MD 509, MD 765, and Parkers Creek Road in Calvert County, Maryland, United States. It is approximately five miles south of Prince Frederick, the county seat of Calvert County. While Port Republic is not incorporated and has no central business district, it nonetheless features several places of note, including historic Christ Episcopal Church, listed on the National Register of Historic Places in 1973, and a restored one room school building. The annual Calvert County Jousting Tournament is held the last Saturday in August on the grounds of Christ Church, and was featured in a 2005 edition of ESPN's SportsCenter's "50 States in 50 Days" feature. The former College of Southern Maryland campus at Port Republic was relocated in 2005 to Prince Frederick. Residential communities located in Port Republic include Governors' Run, Kenwood Beach, Scientists' Cliffs, and Western Shores. Port Republic has a post office with the designated ZIP code 20676.

La Veille, or La Veille Place, is a historic home located at Mutual, Calvert County, Maryland, United States. It is a 1+1⁄2-story gambrel-roofed brick house, of Flemish bond construction. A number of early-19th-century outbuildings include: a log corn crib, three barns (one of which still houses its 19th-century tobacco prise equipment), several small sheds, and a frame house that was created by the joining of two 18th-century log slave quarters. Between the "Quarters" and the main house is the La Veille family cemetery, enclosed within an elaborate late-19th-century wrought iron fence.La Veille was listed on the National Register of Historic Places in 1973.

St. Leonard is a census-designated place (CDP) in Calvert County, Maryland, United States. The population was 742 at the 2010 census. Residents of the Calvert Beach and Long Beach communities also use the St. Leonard ZIP code designation. St. Leonard has a large antique dealer complex.

Broomes Island is a small waterfront community and census-designated place (CDP) located at the southern terminus of MD 264 in Calvert County, Maryland, United States, on the Patuxent River. It is located approximately 10 miles (16 km) south of Prince Frederick, the county seat. As of 2019 Census estimates, the population of the CDP was 421.Although Broomes Island is a rather small community, it does have its own post office and zip code, 20615. In November 2007, the United States Postal Service considered closing the small post office and re-routing all mail delivery through the larger St. Leonard post office branch. After residents contacted US Senator Barbara Mikulski about the proposed closure, the postal service decided against closing the post office.Broomes Island is located near the mouth of St. Leonard Creek, the largest tributary of the Patuxent River entirely inside Calvert County. It is in the vicinity of Broomes Island that several key naval battles were fought during the War of 1812. During the early and mid-20th century, Broomes Island had a substantial oyster canning industry. In recent years most residents of Broomes Island commute to other places for work. Each May, former Maryland State Senator Bernie Fowler has held a "wade-in" at Broomes Island, where he and others would walk into the waters of the Patuxent River until their feet were no longer visible. This was held on the property of Mr. Donald Rogers with his permission. Fowler started the annual tradition to bring awareness to the water clarity levels of the Patuxent. In recent years, the "wade-in" has become a noteworthy public event, with numerous public officials joining Fowler in the walk, including Maryland Governors Martin O'Malley and Robert Ehrlich and U.S Senator Barbara Mikulski. It no longer takes place at this location. In 2003, Hurricane Isabel caused moderate damage to numerous structures in Broomes Island. Most notably, the last remains of the considerable Broomes Island oyster industry - a large red oyster shucking barn - succumbed. The site of the oyster shucking barn is now part of the local Stoney's sea food restaurant. The site is now a venue for weddings and other functions.

Parkers Creek is a small tributary of the Chesapeake Bay located in central Calvert County, Maryland, United States. The creek entrance is just north of the bayside community of Scientists Cliffs. Most of the land surrounding the creek has been protected from development by numerous land trust purchases and conservation easements. Much of the creek is navigable by canoe. The creek's headwaters are south of the town of Prince Frederick.

Scientists' Cliffs is an unincorporated community in Calvert County, Maryland, United States. Other names used for the community include Annes Aggravation, Flippos Folly, Pathologists Quagmire. The private community was first established in 1935 as a summer colony for scientists by Flippo and Annie Gravatt. The founders of Scientists' Cliffs chose this land because the population of American Chestnut trees showed a particular resistance to the blight. Original cabins in the area were built from felled American Chestnut trees that died from the blight. Although established as a seasonal community, the first year-round resident moved to the community in 1943. In 1986, when residents of Scientists' Cliffs heard that forests and abandoned farms surrounding their homes were up for sale, possibly to developers, they chipped in and bought the land. A tract of 436 wooded acres near the Chesapeake Bay became the "American Chestnut Land Trust." In the years since its founding, ACLT has expanded its land preservation by partnering with the Nature Conservancy and the Maryland Department of Natural Resources. By 2019, over 4,000 acres surrounding Scientists' Cliffs have been preserved. The community is accessed by Scientists Cliffs Road and divided into five sub-sections, called "Gates," though it is not a "gated" community. Gates are named Gate A, Gate B, Gate C, Gate D, and Gate E, respectively. The streets in each gate all begin with the corresponding letter of the gate, and are botanically named. For example, Gate A features streets named Aster, Aspen, Azalea, etc., Gate B features streets named Birch, Beech and Bluebell, and so forth. All five gates have direct access to the Chesapeake Bay via a series of paths and wooden boardwalks. Additionally, Gate A features a community center, a residential swimming pool, tennis courts, horseshoe pit, a baseball field, a recycling center, and a private beach referred to as "South Beach". Another feature of Scientists' Cliffs is that a restrictive covenant requires all houses within the community to have a wooden exterior, giving the homes a distinctively rustic look. Recently, however, environmentally neutral cement-based siding such as "Hardie board" has been allowed. The tall cliffs along the edge of the bay contain one of the world's richest fossil deposits from the Miocene period. The cliffs are part of the Calvert Formation. Carcharodon megalodon teeth are found in this area.

Calvert County is a county located in the U.S. state of Maryland. As of the 2020 census, the population was 92,783. Its county seat is Prince Frederick. The county's name is derived from the family name of the Barons of Baltimore, the proprietors of the English Colony of Maryland. Calvert County is included in the Washington–Arlington–Alexandria, DC–VA–MD–WV Metropolitan Statistical Area. It occupies the Calvert Peninsula, which is bordered on the east by Chesapeake Bay and on the west by the Patuxent River. Calvert County is part of the Southern Maryland region. The county has one of the highest median household incomes in the United States. It is one of the older counties in Maryland, after St. Mary's, Kent County and Anne Arundel counties.

Wallville is an unincorporated community located along MD 265 in Calvert County, Maryland, United States. The Patterson's Archeological District was listed on the National Register of Historic Places in 1982.

Calvert Beach is a census-designated place and unincorporated community in Calvert County, Maryland, United States. Its population was 808 as of the 2010 census. Prior to 2010, the community was part of the Calvert Beach-Long Beach CDP.

Calvert Beach-Long Beach was a census-designated place (CDP) in Calvert County, Maryland, United States. The population was 2,487 at the 2000 census. For the 2010 census the area was split into two CDPs: Calvert Beach and Long Beach.

Linden is a historic home located at Prince Frederick, Calvert County, Maryland. It is a two-story frame house, conservatively Italianate in style built about 1868, with conservative Colonial Revival additions of about 1907. Behind the house are ten standing outbuildings, seven dating to the 19th century, three of which are of log construction. It is home to the Calvert County Historical Society. It was listed on the National Register of Historic Places in 2000.