1622 patent

The first patent establishing the Province of Maine was granted on August 10, 1622, to Ferdinando Gorges and John Mason by the Plymouth Council for New England, which itself had been granted a royal patent by James I to the coast of North America between the 40th and the 48th parallels "from sea to sea". This first patent encompassed the coast between the Merrimack and Kennebec rivers, as well as an irregular parcel of land between the headwaters of the two rivers. In 1629, Gorges and Mason agreed to split the patent at the Piscataqua River, with Mason retaining the land south of the river as the Province of New Hampshire.

Gorges named his more northerly piece of territory New Somersetshire. This venture failed, however, because of lack of funds and colonial settlement. Also failed was a venture by Capt. Christopher Levett, an agent for Gorges and a member of the Council for New England. With the King's blessing, Levett embarked on a scheme to found a colony on the site of present-day Portland. Levett was granted 6,000 acres (24 km²) of land, the first Englishman to own the soil of Portland. There he proposed to found a settlement named York after the city of his birth in England. Ultimately, the project was abandoned, the men Levett left behind disappeared, and Levett died aboard ship on his return to England from the Massachusetts Bay Colony in 1630. One part of Levett's scheme did survive: the name of York, which now adorns the county.

The now-decommissioned Fort Levett on Cushing Island in Casco Bay is named for Capt. Levett.

1639 patent

In 1639, Gorges obtained a renewed patent, the Gorges Patent, for the area between the Piscataqua and Kennebec Rivers, in the form of a royal charter from Charles I of England. The area was roughly the same as that covered in the 1622 patent after the 1629 split with Mason. The second colony also foundered for lack of money and settlers, although it survived the death of Gorges in 1647.

Absorption by Massachusetts

In the 1650s the nearby Massachusetts Bay Colony asserted territorial claims over what is now southern Maine, and by 1658 had completely absorbed what is now southwestern Maine into York County, Massachusetts.

The first known and recorded offer for a purchase of land in York County is in 1668, when Francis Small traded goods with the Newichewannock tribe of this area. Their Chief Wesumbe, also known as Captain Sandy, was friendly with Small and warned him of a plot against his life. A group of renegade tribesmen planned on murdering Small instead of paying him with the furs that were owed to him. Small escaped after watching his house in what is now Cornish, Maine, burn to the ground. Small returned and rebuilt. The Chief made up the loss by selling Small all the lands bounded by the Great and Little Ossipee Rivers, the Saco River, and the New Hampshire border. Known now as the five Ossipee towns, the tract included all of Limington, Limerick, Cornish (formerly named Francisborough), Newfield and Parsonsfield.

The large size of the county led to its division in 1760, with Cumberland and Lincoln counties carved out of its eastern portions. When Massachusetts adopted its state government in 1780, it created the District of Maine to manage its eastern territories. In 1805 the northern portion of York County was separated to form part of Oxford County. When Maine achieved statehood in 1820 all of the counties of the District of Maine became counties of Maine.

Adjacent counties

• Oxford County – north
• Cumberland County – northeast
• Rockingham County, New Hampshire – southwest
• Strafford County, New Hampshire – west
• Carroll County, New Hampshire – northwest

National protected area

• Rachel Carson National Wildlife Refuge (part)

2000 census

At the 2000 census,^[10] there were 186,742 people, 74,563 households and 50,851 families living in the county. The population density was 188 inhabitants per square mile (73/km²). There were 94,234 housing units at an average density of 95 per square mile (37/km²). The racial makeup of the county was 97.56% White, 0.42% Black or African American, 0.24% Native American, 0.73% Asian, 0.03% Pacific Islander, 0.17% from other races, and 0.85% from two or more races. 0.70% of the population were Hispanic or Latino of any race. The most cited ethnicities were English (17.9%), French (14.5%), French Canadian (13.9%), Irish (12.5%), United States or American (9.6%) and Italian (5.1%). 90.84% of the population spoke English and 6.92% spoke French as their first language.^[11]

There were 74,563 households, of which 32.20% had children under the age of 18 living with them, 55.00% were married couples living together, 9.50% had a female householder with no husband present, and 31.80% were non-families. 24.90% of all households were made up of individuals, and 9.70% had someone living alone who was 65 years of age or older. The average household size was 2.47 and the average family size was 2.96.

Age distribution was 24.80% under the age of 18, 6.90% from 18 to 24, 30.00% from 25 to 44, 24.80% from 45 to 64, and 13.60% who were 65 years of age or older. For every 100 females, there were 94.50 males. For every 100 females age 18 and over, there were 91.40 males. The median age was 38 years.

The median household income was $43,630, and the median family income was $51,419. Males had a median income of $36,317 versus $26,016 for females. The per capita income for the county was $21,225. About 5.90% of families and 8.20% of the population were below the poverty line, including 9.90% of those under age 18 and 8.50% of those age 65 or over.

2010 census

As of the 2010 United States census, there were 197,131 people, 81,009 households, and 53,136 families living in the county.^[12] The population density was 199.0 inhabitants per square mile (76.8/km²). There were 105,773 housing units at an average density of 106.8 per square mile (41.2/km²).^[13] The racial makeup of the county was 96.4% white, 1.1% Asian, 0.6% black or African American, 0.3% American Indian, 0.3% from other races, and 1.4% from two or more races. Those of Hispanic or Latino origin made up 1.3% of the population.^[12] In terms of ancestry, 22.3% were English, 19.3% were Irish, 9.8% were French Canadian, 8.1% were German, 7.9% were Italian, 5.8% were American, and 5.6% were Scottish.^[14]

Of the 81,009 households, 29.3% had children under the age of 18 living with them, 51.4% were married couples living together, 9.7% had a female householder with no husband present, 34.4% were non-families, and 26.5% of all households were made up of individuals. The average household size was 2.40 and the average family size was 2.89. The median age was 43.0 years.^[12]

The median income for a household in the county was $55,008 and the median income for a family was $65,077. Males had a median income of $47,117 versus $34,001 for females. The per capita income for the county was $27,137. About 5.6% of families and 8.5% of the population were below the poverty line, including 10.4% of those under age 18 and 8.1% of those age 65 or over.^[15]

Voter registration

Cities

• Biddeford
• Saco
• Sanford

Towns

Census-designated places

Unincorporated villages or neighborhoods

• Bald Head
• Bar Mills
• Bedell Crossing
• Cape Porpoise
• East Parsonsfield
• East Waterboro
• Felch Corner
• Ocean Park
• Springvale
• York Beach
• York Cliffs