Portland was incorporated in 1851 and is the county seat of Multnomah County. The city extends slightly into Washington County to the west and Clackamas County to the south. It is governed by a commission-based government headed by a mayor and four other commissioners.
The city and region are noted for strong land-use planning and investment in light rail, supported by Metro, a distinctive regional-government scheme. Portland is also known for its large number of microbreweries and microdistilleries, and as the home of the Trail Blazers NBA basketball team.
Portland lies in the Marine west coast climate region, marked by warm, dry summers and rainy but temperate winters. This climate is ideal for growing roses, and for more than a century, Portland has been known as "The City of Roses" with many rose gardens—most prominently the International Rose Test Garden.
As of 2008, there are 575,930 people residing in the city, organized into 223,737 households and 118,356 families. The population density is 4,228.38 people per square mile (1,655.31/km²). There are 237,307 housing units at an average density of 1,766.7/sq mi (682.1/km²).
Compared to the Oregon state average, Portland's median house value is above state average, and its black, Hispanic, and foreign-born populations are significantly above state average.
Out of 223,737 households, 24.5% have children under the age of 18 living with them, 38.1% are married couples living together, 10.8% have a female householder with no husband present, and 47.1% are non-families. 34.6% of all households are made up of individuals and 9% have someone living alone who is 65 years of age or older. The average household size is 2.3 and the average family size is 3.
The age distribution was 21.1% under the age of 18, 10.3% from 18 to 24, 34.7% from 25 to 44, 22.4% from 45 to 64, and 11.6% who are 65 years of age or older. The median age is 35 years. For every 100 females there are 97.8 males. For every 100 females age 18 and over, there are 95.9 males.
The median income for a household in the city is $40,146, and the median income for a family is $50,271. Males have a reported median income of $35,279 versus $29,344 reported for females. The per capita income for the city is $22,643. 13.1% of the population and 8.5% of families are below the poverty line. Out of the total population, 15.7% of those under the age of 18 and 10.4% of those 65 and older are living below the poverty line. Figures delineating the income levels based on race are not available at this time.
However, though the population of the city is increasing, the total population of children is diminishing, which has put pressure on the public school system to close schools. A 2005 study found that Portland is now educating fewer children than it did in 1925, despite the city's population having almost doubled since then, and the city will have to close the equivalent of three to four elementary schools each year for the next decade.
In 1940, Portland's African-American population was approximately 2,000 and largely consisted of railroad employees and their families. During the war-time liberty ship construction boom, the need for workers drew many blacks to the city. The new influx of blacks settled in specific neighborhoods, such as the Albina district and Vanport. The May, 1948 flood which destroyed Vanport eliminated the only integrated neighborhood, and an influx of blacks into the NE quadrant of the city continued. At 7.90%, Portland's African American population is nearly four times the state average. Over two thirds of Oregon's African-American residents live in Portland. As of the 2000 census, three of its high schools (Cleveland, Lincoln and Wilson) were over 70% white, reflecting the overall population, while Jefferson High School was 76% non-white. The remaining six schools have a higher number of non-whites, including Blacks and Asians. Hispanic students average from 3.3% at Wilson to 14.9% at Roosevelt.
The Portland metropolitan area has transportation services common to major U.S. cities, though Oregon's emphasis on proactive land-use planning and transit-oriented development within the urban growth boundary means that commuters have multiple well-developed options.
Some Portlanders use mass transit for their daily commute. In 2005, 13% rode buses, light rail, or the downtown streetcar. TriMet operates most of the region's buses and the MAX (short for Metropolitan Area Express) light rail system, which connects the city and suburbs. Westside Express Service, or WES, opened in February 2009 as commuter rail for Portland's western suburbs, linking Beaverton and Wilsonville. The Portland Streetcar operates from the south waterfront, through Portland State University and north to nearby homes and shopping districts. In Fareless Square, a designated geographic area centered in downtown, rides on TriMet's buses, MAX, and streetcar are free. Fifth and Sixth Avenues used to be the Portland Transit Mall, devoted primarily to bus traffic with limited automobile access. Intense public transit development continues as two light rail lines are under construction, as well as a new downtown transit mall linking several transit options. Trimet also provides real-time tracking of buses and trains with its TransitTracker [2] and even makes the data available to developers so they can create customized tools of their own. [3].
I-5 connects Portland with the Willamette Valley, Southern Oregon, and California to the south and with Washington to the north. I-405 forms a loop with I-5 around the central downtown area of the city and I-205 is a loop freeway route on the east side which connects to the Portland International Airport. US 26 supports commuting within the metro area and continues to the Pacific Ocean westward and Mount Hood and Central Oregon eastward. US 30 has a main, bypass, and business route through the city extending to Astoria, Oregon to the west; through Gresham, Oregon, and the eastern exurbs, and connects to I-84, traveling towards Boise, Idaho.
Portland's main airport is Portland International Airport, located about 20 minutes by car (40 minutes by MAX) northeast of downtown. In addition Portland is home to Oregon's only public use heliport, the Portland Downtown Heliport. Amtrak, the national passenger rail system, provides service to Portland at Union Station on three routes. Long-haul train routes include the Coast Starlight (with service from Los Angeles to Seattle) and the Empire Builder (with service from Portland to Chicago.) The Amtrak Cascades commuter trains operate between Vancouver, British Columbia and Eugene, Oregon, and serve Portland several times daily.
The city is particularly supportive of urban bicycling and has been recognized by the League of American Bicyclists among others for its network of paths and other bicycle-friendly services. The Bicycle Transportation Alliance sponsors an annual Bicycle Commute Challenge, in which thousands of commuters compete for prizes and recognition based on the length and frequency of their commutes. Three and a half percent of commuters bike to work, more than in any other major U.S. city. Car sharing through Zipcar is available to residents of the city and some inner suburbs. Portland has a commuter aerial tram, the Portland Aerial Tram, which connects the South Waterfront district on the Willamette River to the Oregon Health & Science University campus on Marquam Hill above.