| Demographics |
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Demographic Overview of the Corvallis Area
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| Historical populations | |||
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| Census | Pop. | %± | |
| 1860 | 620 | — | |
| 1870 | 800 | 29.0% | |
| 1880 | 1,128 | 41.0% | |
| 1890 | 1,529 | 35.5% | |
| 1900 | 1,819 | 19.0% | |
| 1910 | 4,552 | 150.2% | |
| 1920 | 5,752 | 26.4% | |
| 1930 | 7,585 | 31.9% | |
| 1940 | 8,392 | 10.6% | |
| 1950 | 16,207 | 93.1% | |
| 1960 | 20,669 | 27.5% | |
| 1970 | 35,153 | 70.1% | |
| 1980 | 40,960 | 16.5% | |
| 1990 | 44,757 | 9.3% | |
| 2000 | 49,322 | 10.2% | |
| Est. 2007 | 51,125 | 3.7% | |
There were 19,630 households out of which 24.0% had children under the age of 18 living with them, 40.8% were married couples living together, 7.2% had a female householder with no husband present, and 49.2% were non-families. 31.5% of all households were made up of individuals and 7.5% had someone living alone who was 65 years of age or older. The average household size was 2.26 and the average family size was 2.88.
In the city the population was spread out with 17.7% under the age of 18, 28.4% from 18 to 24, 27.0% from 25 to 44, 16.8% from 45 to 64, and 10.1% who were 65 years of age or older. The median age was 27 years. For every 100 females there were 99.2 males. For every 100 females age 18 and over, there were 98.2 males.
The median income for a household in the city was $35,236, and the median income for a family was $53,208. Males had a median income of $40,770 versus $29,390 for females. The per capita income for the city was $19,317. About 9.7% of families and 20.6% of the population were below the poverty line, including 15.2% of those under age 18 and 6.0% of those age 65 or over.
Green Power
According to the federal Environmental Protection Agency report on its “green power communities,” Corvallis buys more power from renewable resources than any other city in the nation. Corvallis purchases more than 100 million kilowatt-hours of green power annually, which amounts to 13 percent of the city’s total purchased electricity.[16][17]
Religion
- A 2003 study, released once every 10 years, listed Benton County (of which Corvallis makes up the majority of the population) as the least religious county per capita in the United States. Only 1 in 4 people indicated that they were affiliated with one of the 149 religious groups the study identified. The study indicated that some of the disparity, however, may be attributed to the popularity of less traditional religions (ones not included as an option in the study) in the Pacific Northwest.



