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Cumberland County, Maine facts for kids

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Cumberland County
The Portland Head Light lighthouse in Cape Elizabeth
Official seal of Cumberland County
Map of Maine highlighting Cumberland County
Location within the U.S. state of Maine
Map of the United States highlighting Maine
Maine's location within the U.S.
Country  United States
State  Maine
Founded November 1, 1760
Named for Prince William, Duke of Cumberland
Seat Portland
Largest city Portland
 • Total 1,217 sq mi (3,150 km2)
 • Land 835 sq mi (2,160 km2)
 • Water 383 sq mi (990 km2)  31%%
 • Total 303,069
 • Density 249.03/sq mi (96.15/km2)
Time zone UTC−5 (Eastern)
 • Summer (DST) UTC−4 (EDT)
Congressional district 1st

Cumberland County is a county in the U.S. state of Maine. As of the 2020 census, the population was 303,069, making it the most populous county in Maine. Its county seat is Portland. Cumberland County was founded in 1760 from a portion of York County, Province of Massachusetts Bay, and named for William, Duke of Cumberland, a son of King George II.

Cumberland County has the deepest and second-largest body of water in the state, Sebago Lake, which supplies tap water to most of the county. The county is the state's economic and industrial center, having the resources of the Port of Portland, the Maine Mall, and having corporate headquarters of major companies such as Fairchild Semiconductor, IDEXX Laboratories, Unum, and TD Bank.

Cumberland County is part of the Portland–South Portland, ME Metropolitan Statistical Area.


According to the U.S. Census Bureau, the county has a total area of 1,217 square miles (3,150 km2), of which 835 square miles (2,160 km2) is land and 382 square miles (990 km2) (31%) is water.

Adjacent counties

Major highways

  • I-95.svg Interstate 95
  • I-295.svg Interstate 295
  • US 202.svg U.S. Route 202
  • US 302.svg U.S. Route 302
  • US 1.svg U.S. 1
  • MA Route 9.svg Maine State Route 9
  • MA Route 77.svg Maine State Route 77
  • MA Route 114.svg Maine State Route 114

National protected area


Historical population
Census Pop.
1790 25,530
1800 38,208 49.7%
1810 42,831 12.1%
1820 49,445 15.4%
1830 60,102 21.6%
1840 68,658 14.2%
1850 79,538 15.8%
1860 75,591 −5.0%
1870 82,021 8.5%
1880 86,359 5.3%
1890 90,949 5.3%
1900 100,689 10.7%
1910 112,014 11.2%
1920 124,376 11.0%
1930 134,645 8.3%
1940 146,000 8.4%
1950 169,201 15.9%
1960 182,751 8.0%
1970 192,528 5.3%
1980 215,789 12.1%
1990 243,135 12.7%
2000 265,612 9.2%
2010 281,674 6.0%
2020 303,069 7.6%
U.S. Decennial Census
1790–1960 1900–1990
1990–2000 2010–2019

2010 census

As of the 2010 United States Census, there were 281,674 people, 117,339 households, and 70,778 families living in the county. The population density was 337.2 inhabitants per square mile (130.2/km2). There were 138,657 housing units at an average density of 166.0 per square mile (64.1/km2). The racial makeup of the county was 92.8% white, 2.4% black or African American, 2.0% Asian, 0.3% American Indian, 0.6% from other races, and 1.8% from two or more races. Those of Hispanic or Latino origin made up 1.8% of the population. In terms of ancestry, 22.7% were English, 21.1% were Irish, 9.0% were German, 8.4% were Italian, 6.0% were Scottish, 5.5% were French Canadian, and 4.4% were American.

Of the 117,339 households, 28.3% had children under the age of 18 living with them, 46.8% were married couples living together, 9.7% had a female householder with no husband present, 39.7% were non-families, and 29.7% of all households were made up of individuals. The average household size was 2.32 and the average family size was 2.90. The median age was 41.0 years.

The median income for a household in the county was $55,658 and the median income for a family was $71,335. Males had a median income of $48,158 versus $38,539 for females. The per capita income for the county was $31,041. About 6.9% of families and 10.5% of the population were below the poverty line, including 14.4% of those under age 18 and 7.5% of those age 65 or over.




Census-designated places

Other unincorporated communities

In popular culture

The fictional town of Jerusalem's Lot, featured in the vampire novel 'Salem's Lot by Stephen King, is situated in Cumberland County. King makes passing reference to other nearby towns and cities, including Portland, Falmouth, and Westbrook.

The video game Trauma Team takes place in Cumberland County in the year 2020, referencing Portland and Portland's Back Cove. Neither actual hospital housed in Portland is mentioned in-game; instead, a fictional trauma center called Resurgam First Care is fabricated for the plot (in real life, Portland's city motto is "Resurgam," Latin for "I will rise again"). Two other fictional places are mentioned that reference the county name: "Cumberland College" and "Cumberland Institute of Forensic Medicine".

See also

Kids robot.svg In Spanish: Condado de Cumberland (Maine) para niños

Black History Month on Kiddle
Famous African-American Pilots:
Bessie Coleman
Spann Watson
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