Мэриленд штатындағы Калверт округі

County in Maryland, United States

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.

In 1608, Captain John Smith was the first European to sail past Calvert County while exploring the western shore of the Chesapeake Bay. On his map, he accurately represented the Patuxent River as well as several Native American villages. The area was described as wooded and had been occupied by the Patuxent people who were overall peaceful to the early Europeans. Their diet was composed of fish from the river and corn cultivated in man made clearings with a supplement of game from the forests. These clearings were very desirable and conflict occurred when the settlers attempted to seize these areas from the Native Americans. Leonard Calvert, the first Governor of the Maryland, organized troops of armed men in 1639 to protect the settlers. The first written mention of European settlers on the northern shore of the Patuxent River is found in the records of the Maryland Assembly in 1642. A Henry Bishop "stood up in the Assembly and exhibited himself as a Burgess of St. Leonard's and pleaded that it be acknowledged as a Hundred" near St. Leonard's Creek. This shows that European settlement along the river and its tributaries had been taking place for several years already. in 1650 when Cecil Calvert, 2nd Baron Baltimore established it with Robert Brooke as its "Commander". It was named after Charles I of England. At the time, the new county included the current area of Calvert County as well as the southern and western shores of the Patuxent River up to its headwaters. The county seat was called Calverton (sometimes called Battle Town) and was located on the north shore at the mouth of Battle Creek until 1725. In 1658, the county was renamed Calvert County. It also included all of Prince George's County and parts of Montgomery County. in 1860 there were 4,609 enslaved people, 1,841 free people of color for a total county population of 10,000 people. Once made up primarily of farms and tobacco fields, the county's agriculture transformed in the mid 1990s. The prices for tobacco were declining. The State of Maryland instituted the Tobacco Buyout program which offered farmers to transition to different crops and away from tobacco. 195 contracts were signed between Calvert county farmers and property owners and The Southern Maryland Agricultural Development Commission. The funds were used for infrastructure and equipment upgrades. Today the county produces fruits, vegetables, meat as well as other crops. The county has become a fast growing exurban neighbor of Washington. Many home prices have nearly quadrupled in the past decade, with many four bedroom homes in the northern half of the county averaging over $1,000,000. The popular weekend resort towns of Solomons, Chesapeake Beach, and North Beach are notable. The county has numerous properties on the National Register of Historic Places.

Until 2018, Calvert County was the only county in Maryland that still had a 100% all volunteer Fire, Rescue, and EMS service. However, on January 20, 2018, the Calvert County Board of County Commissioners approved a phased in approach of hiring paramedics, starting in fiscal year 2019.

According to the U. S. Census Bureau, the county has a total area of 345 square miles (894 km2), of which 213 square miles (552 km2) is land and 132 square miles (342 km2) (38%) is water. It is the smallest county in Maryland by land area and third smallest by total area. The county also includes five islands: Solomons Island, Broomes Island, Buzzard Island, Hog Island, and Molly's Leg. The county's coast along the Chesapeake Bay is a long, relatively smooth bight, a feature that is unique in the Chesapeake Bay.

A geological formation spanning across Maryland, Virginia, and Delaware is named after the county: the Calvert Formation. It is visible within the Calvert Cliffs State Park where it is exposed in cliffs. Located on the western shore of the county, Calvert Cliffs are famous for their fossil deposits and are a popular collecting location of marine vertebrates, shark teeth, birds as well as fresh water and marine turtles and tortoises. Some crocodile teeth have also been found which indicates that they may have been nesting in the sands at the time the formation was created. The county landscape is composed of three platforms: the Talbot Terrace, the Wicomico Terrace, and the Sunderland Terrace (also known as the Ridge). These terraces correspond to three periods where the water level rose and later fell, leaving sand deposits. The oldest was created during the Miocene Age when the entire county peninsula found itself underwater. Marine deposits, clay, and mud containing sea shells and fossils were left behind leading to what we see at Calvert Cliffs today after the sea receded and the waves started erroring the deposit. These three terraces are visible in various parts of the county and are most obvious on the Bay side of the county where they rise to a height of 100 feet.

As of the census of 2000, there were 74,563 people, 25,447 households, and 20,154 families residing in the county. The population density was There were 27,576 housing units at an average density of The racial makeup of the county was 83.93% White, 13.11% Black or African American, 0.30% Native American, 0.88% Asian, 0.03% Pacific Islander, 0.49% from other races, and 1.27% from two or more races. 1.52% of the population were Hispanic or Latino of any race. 15.5% were of Irish, 15.0% German, 12.0% English, 11.5% United States or American and 7.1% Italian ancestry. There were 25,447 households, out of which 41.70% had children under the age of 18 living with them, 64.80% were married couples living together, 9.90% had a female householder with no husband present, and 20.80% were non families. 16.30% of all households were made up of individuals, and 5.70% had someone living alone who was 65 years of age or older. The average household size was 2.91 and the average family size was 3.26. In the county, the population was spread out, with 29.60% under the age of 18, 6.40% from 18 to 24, 31.70% from 25 to 44, 23.40% from 45 to 64, and 8.90% who were 65 years of age or older. The median age was 36 years. For every 100 females there were 97.30 males. For every 100 females age 18 and over, there were 94.00 males. The median income for a household in the county was $65,945, and the median income for a family was $71,545 (these figures had risen to $88,989 and $100,229 respectively as of a 2007 estimate). Males had a median income of $48,664 versus $32,265 for females. The per capita income for the county was $25,410. About 3.10% of families and 4.40% of the population were below the poverty line, including 5.10% of those under age 18 and 5.70% of those age 65 or over.

As of the 2010 United States Census, there were 88,737 people, 30,873 households, and 23,732 families residing in the county. The population density was There were 33,780 housing units at an average density of The racial makeup of the county was 81.4% white, 13.4% black or African American, 1.4% Asian, 0.4% American Indian, 0.7% from other races, and 2.7% from two or more races. Those of Hispanic or Latino origin made up 2.7% of the population. Of the 30,873 households, 40.4% had children under the age of 18 living with them, 60.6% were married couples living together, 11.3% had a female householder with no husband present, 23.1% were non families, and 18.1% of all households were made up of individuals. The average household size was 2.85 and the average family size was 3.23. The median age was 40.1 years. According to the 2010 Census the racial and ethnic make up of the Calvert County Population was 79.65% Non Hispanic whites, 13.44% blacks, 0.37% Native Americans, 1.42% Asians, 0.05% Pacific Islanders, 0.12% Non Hispanics reporting some other race, 2.40% Non Hispanics reporting multiple races and 2.75% Hispanic.

Calvert Cliffs Nuclear Power Plant is located on the western shore of Chesapeake Bay at Lusby, as is the Cove Point LNG Terminal. The Chesapeake Biological Laboratory, part of the University of Maryland Center for Environmental Science is located in Solomons. A branch of the United States Naval Research Laboratory is located at Chesapeake Beach. The Patuxent River Naval Air Station is located immediately to the south of Calvert County, in St. Mary's County.

Calvert County is served by Calvert County Public Schools. The county's education system consists of 13 elementary schools, six middle schools, four high schools, a vocational education center, and a variety of other facilities. There is also one private K 12 school, The Calverton School.

Calvert County has been the setting for several movies and television programs. The opening scene of the 1993 Clint Eastwood movie In the Line of Fire was filmed at Flag Harbor Marina in St. Leonard. More recently, the Calvert County Sheriff's Department has been featured on several reality television programs, including Speeders on the truTV network, MTV's Busted, and was featured weekly on A&E's Live PD.