Map of the 20 core-based statistical areas in Oregon.
An enlargeable map of the 20 core-based statistical areas in Oregon.[1]

The U.S. State of Oregon currently has 24 statistical areas that have been delineated by the Office of Management and Budget (OMB). On March 6, 2020, the OMB delineated four combined statistical areas, eight metropolitan statistical areas, and 12 micropolitan statistical areas in Oregon.[1]

Statistical areas

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 (commonly referred to as a CBSA) as "a statistical geographic entity consisting of the county or counties (or county-equivalents) associated with at least one core[a] of at least 10,000 population, 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 core-based statistical areas into metropolitan statistical areas (MSAs) that have "a population of at least 50,000" and micropolitan statistical areas (μSAs) that have "a population of at least 10,000, but less than 50,000."[2]

The OMB defines a combined statistical area (CSA) as "a geographic entity consisting of two or more adjacent core-based statistical areas with employment interchange measures[b] of at least 15%."[2] The primary statistical areas (PSAs) include all combined statistical areas and any core-based statistical area that is not a constituent of a combined statistical area.


The table below describes the 24 United States statistical areas and 36 counties of the State of Oregon with the following information:[3]

  1. The combined statistical area (CSA) as designated by the OMB.[1]
  2. The CSA population according to 2019 US Census Bureau population estimates.[4]
  3. The core based statistical area (CBSA)[2] as designated by the OMB.[1]
  4. The CBSA population according to 2019 US Census Bureau population estimates [4]
  5. The county name
  6. The county population according to 2019 US Census Bureau population estimates [4]
The 24 United States statistical areas and 36 counties of the State of Oregon

Combined Statistical Area 2019 Population Core Based Statistical Area 2019 Population County 2019 Population
Portland-Vancouver-Salem, OR-WA CSA 3,259,710
Portland-Vancouver-Hillsboro, OR-WA MSA 2,492,412
Multnomah County, Oregon 812,855
Washington County, Oregon 601,592
Clark County, Washington 488,241
Clackamas County, Oregon 418,187
Yamhill County, Oregon 107,100
Columbia County, Oregon 52,354
Skamania County, Washington 12,083
Salem, OR MSA 433,903 Marion County, Oregon 347,818
Polk County, Oregon 86,085
Albany-Lebanon, OR MSA 129,749 Linn County, Oregon 129,749
Longview, WA MSA 110,593 Cowlitz County, Washington 110,593
Corvallis, OR MSA 93,053 Benton County, Oregon 93,053
none Eugene-Springfield, OR MSA 382,067 Lane County, Oregon 382,067
Medford-Grants Pass, OR CSA 308,431 Medford, OR MSA 220,994 Jackson County, Oregon 220,994
Grants Pass, OR MSA 87,487 Josephine County, Oregon 87,487
Bend-Prineville, OR CSA 222,096 Bend, OR MSA 197,692 Deschutes County, Oregon 197,692
Prineville, OR μSA 24,404 Crook County, Oregon 24,404
none Roseburg, OR μSA 110,980 Douglas County, Oregon 110,980
Hermiston-Pendleton, OR μSA 89,553 Umatilla County, Oregon 77,950
Morrow County, Oregon 11,603
Klamath Falls, OR μSA 68,238 Klamath County, Oregon 68,238
Coos Bay, OR μSA 64,487 Coos County, Oregon 64,487
Newport, OR μSA 49,962 Lincoln County, Oregon 49,962
Astoria, OR μSA 40,224 Clatsop County, Oregon 40,244
Boise City-Mountain Home-Ontario, ID-OR CSA 831,235
Boise City-Nampa, ID MSA 749,202 Ada County, Idaho 481,587
Canyon County, Idaho 229,849
Gem County, Idaho 18,112
Owyhee County, Idaho 11,823
Boise County, Idaho 7,831
Ontario, OR-ID μSA 54,522
Malheur County, Oregon 30,571
Payette County, Idaho 23,951
Mountain Home, ID μSA 27,511 Elmore County, Idaho 27,511
none La Grande, OR μSA 26,835 Union County, Oregon 26,835
The Dalles, OR μSA 26,682 Wasco County, Oregon 26,682
Hood River, OR μSA 23,382 Hood River County, Oregon 23,382
Brookings, OR μSA 22,925 Curry County, Oregon 22,925
none Tillamook County, Oregon 27,036
Jefferson County, Oregon 24,658
Baker County, Oregon 16,124
Lake County, Oregon 7,869
Harney County, Oregon 7,393
Wallowa County, Oregon 7,208
Grant County, Oregon 7,199
Gilliam County, Oregon 1,912
Sherman County, Oregon 1,780
Wheeler County, Oregon 1,332
State of Oregon 4,217,737

See also


  1. ^ The OMB defines a core as "a densely settled concentration of population, comprising an Urban Area (of 10,000 or more population) delineated by the Census Bureau, around which a core-based statistical area is delineated."[2]
  2. ^ The OMB defines the employment interchange measure as "the sum of the percentage of workers living in the smaller entity who work in the larger entity plus the percentage of employment in the smaller entity that is accounted for by workers who reside in the larger entity."[2]


  1. ^ a b c d Revised Delineations of Metropolitan Statistical Areas, Micropolitan Statistical Areas, and Combined Statistical Areas, and Guidance on Uses of the Delineations of These Areas (March 6, 2020). "0MB BULLETIN NO. 20-01" (PDF). Office of Management and Budget. Retrieved December 15, 2021.((cite web)): CS1 maint: multiple names: authors list (link)
  2. ^ a b c d e f g "2020 Standards for Delineating Core Based Statistical Areas". Office of Management and Budget. July 16, 2021. Retrieved December 15, 2021.
  3. ^ An out-of-state area and its population are displayed in green. An area that extends into more than one state is displayed in teal. A teal population number over a black population number show the total population versus the in-state population.
  4. ^ a b c "Annual Estimates of the Resident Population for Counties in the United States: April 1, 2010 to July 1, 2019". United States Census Bureau, Population Division. April 2020. Retrieved April 9, 2020.

43°56′01″N 120°33′30″W / 43.9336°N 120.5583°W / 43.9336; -120.5583 (State of Oregon)