Oregon is astate in thePacific Northwest region of theWestern United States. As of the2020 U.S. census, it is the27th-most populous state, with4,237,256 inhabitants,^[1][2] and ranked10th by land area, spanning 95,988 square miles (248,610 km²) of land.^[3] Oregon is divided into 36counties and contains 241incorporated cities.^[3][4] Approximately 71 percent of the state's population lives in cities, which also generate 83 percent of economic activity and more than 82 percent of Oregon's jobs.^[4]

The most populous municipality in Oregon isPortland with 652,503 residents, and the least populous municipality isGreenhorn with three residents.^[5][6] In 2020, the state had five cities with populations greater than 100,000 residents.^[2][7] Portland is also the largest city by land area, at 133.45 sq mi (345.6 km²), whileBarlow is the smallest at 0.05 sq mi (0.13 km²).^[3][8] The oldest city in Oregon isOregon City, which was incorporated in 1844 by theProvisional Legislature and was the first recognized city west of theRocky Mountains.^[9] The most recent city to incorporate isLa Pine, which was formed in 2006.^[10] Cities are able to be dissolved through disincorporation or consolidated to form a new city, such as the amalgamation of three cities in 1965 to createLincoln City.^[11]

All cities have an electedcouncil and an executive that differs based on the chosen form of local government. A majority of large cities use thecouncil–manager form, which has an executivecity manager who is appointed by the council but is not directly elected. Themayor–council form includes an electedmayor that serves as the chief executive.^[4][12] Until its change to a mayor–council system in 2025, Portland used the commission form of government in which elected members of the city commission were also appointed by the mayor to lead city departments.^[12][13] Cities are generally responsible for providingemergency services, land use planning, maintenance of streets,water andwaste treatment utilities, and other social services.^[4] Revenue for these municipal services is primarily derived fromproperty taxes, followed by fees,hotel taxes, and some funding that is shared with the state government.^[14]

• 
  Downtown skyline ofPortland, the most populous city in Oregon
• 
  Eugene, the second-most populous city in Oregon
• 
  Salem, the third-most populous city in Oregon and the state's capital
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  Gresham, the fourth-most populous city in Oregon

• List of counties in Oregon
• List of cities and unincorporated communities in Oregon
• List of census-designated places in Oregon
• List of ghost towns in Oregon

• Cities in Oregon
• Lists of cities in the United States by state
• Lists of towns in the United States
• Oregon geography-related lists

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