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Maine statistical areas

From Wikipedia, the free encyclopedia

The U.S. State of Maine currently has five statistical areas that have been delineated by the Office of Management and Budget (OMB). On July 21, 2023, the OMB delineated one combined statistical area, three metropolitan statistical areas, and one micropolitan statistical area in Maine.[1] As of 2025, the largest of these is the Portland–Lewiston–South Portland, ME CSA, comprising the region around Maine's largest city of Portland.

Statistical areas

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The Office of Management and Budget (OMB) has designated more than 1,000 statistical areas for the United States and Puerto Rico.[2] These statistical areas are important geographic delineations of population clusters used by the OMB, the United States Census Bureau, planning organizations, and federal, state, and local government entities.

The OMB defines a core-based statistical area (CBSA) as the county or counties (or county-equivalents) surrounding at least one densely-settled core of at least 10,000 population,[2] "plus adjacent counties having a high degree of social and economic integration with the core as measured through commuting ties with the counties containing the core".[2] The OMB further divides a CBSA based on population into a metropolitan statistical area (MSA) for those with at least 50,000 people or a micropolitan statistical area (μSA) for those with 10,000 to 49,999 people.[2]

The OMB defines a combined statistical area (CSA) as two or more adjacent CBSAs where the employment interchange rate (percent commuting from A to B plus percent commuting from B to A) is at least 15%.[2] A primary statistical area (PSA) includes all CSAs and any CBSA that is not a constituent of a combined statistical area.

The five United States statistical areas and 16 counties of the State of Maine
Combined statistical area[1] 2025 population (est.)[3] Core-based statistical area[1] 2025 population (est.)[3] County 2025 population (est.)[3]
Portland–Lewiston–South Portland, ME CSA 694,122 Portland–South Portland, ME MSA 577,635 Cumberland County, Maine 317,222
York County, Maine 222,434
Sagadahoc County, Maine 37,979
Lewiston–Auburn, ME MSA 116,487 Androscoggin County, Maine 116,487
none Bangor, ME MSA 157,967 Penobscot County, Maine 157,967
Augusta–Waterville, ME μSA 129,607 Kennebec County, Maine 129,607
none Aroostook County, Maine 66,609
Oxford County, Maine 60,346
Hancock County, Maine 57,171
Somerset County, Maine 51,620
Knox County, Maine 41,117
Waldo County, Maine 40,693
Lincoln County, Maine 36,595
Washington County, Maine 31,334
Franklin County, Maine 30,824
Piscataquis County, Maine 17,409
State of Maine 1,414,874
The four core-based statistical areas of the State of Maine
2025 rank Core-based statistical area[1] Population
2025 estimate[3] Change 2020 Census[4] Change 2010 Census[5]
1 Portland–South Portland, ME MSA 577,635+4.69%551,740+7.32%514,098
2 Bangor, ME MSA 157,967+3.79%152,199−1.12%153,923
3 Augusta–Waterville, ME μSA 129,607+4.82%123,642+1.22%122,151
4 Lewiston–Auburn, ME MSA 116,487+4.81%111,139+3.19%107,702
The one combined statistical area of the State of Maine
2025 rank Combined statistical area[1] Population
2025 estimate[3] Change 2020 Census[4] Change 2010 Census[5]
1 Portland–Lewiston–South Portland, ME CSA 694,122+4.71%662,879+6.61%621,800

See also

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Notes

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References

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  1. 1 2 3 4 5 Revised Delineations of Metropolitan Statistical Areas, Micropolitan Statistical Areas, and Combined Statistical Areas, and Guidance on Uses of the Delineations of These Areas (July 21, 2023). "0MB BULLETIN NO. 23-01" (PDF). Office of Management and Budget. Retrieved November 5, 2023.{{cite web}}: CS1 maint: multiple names: authors list (link)
  2. 1 2 3 4 5 "2020 Standards for Delineating Core Based Statistical Areas". Office of Management and Budget. July 16, 2021. Retrieved December 13, 2021.
  3. 1 2 3 4 5 "Annual Estimates of the Resident Population for Counties: April 1, 2020 to July 1, 2025". United States Census Bureau, Population Division. July 2025. Retrieved June 24, 2026.
  4. 1 2 "PROFILE OF GENERAL POPULATION AND HOUSING CHARACTERISTICS". U.S. Census Bureau. 2020. Retrieved May 21, 2024.
  5. 1 2 "Annual Estimates of the Resident Population for Counties: April 1, 2010 to July 1, 2019". U.S. Census Bureau. 2019. Retrieved May 21, 2024.
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45°22′10″N 69°14′34″W / 45.3695°N 69.2428°W / 45.3695; -69.2428 (State of Maine)

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