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Home > Demographics > County: Jefferson > Population

2024 Demographics

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Claritas demographic estimates are primarily based on U.S. Census and American Community Survey (ACS) data. 

Claritas uses proprietary formulas and methodologies to calculate estimates for the current calendar year and five-year projections for every data release updated yearly.  

Claritas warns to not compare estimates between their yearly releases due to changing methodologies and input data used between each data release.

Central Oregon is made up of Crook, Deschutes, Jefferson, Northern Klamath counties, and the Confederated Tribes of Warm Springs.

Northern Klamath County is made up of: zip codes 97731 (includes Chemult and surrounding areas south), 97733 (includes Gilcrest, Crescent, and surrounding areas west and south) and 97737 (the area south of La Pine and north of Gilcrest).

Population Data for County: Jefferson

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Population

County: Jefferson

25,745
Persons

State: Oregon 4,273,842 Persons

Percent Population Change: 2020 to 2024

County: Jefferson

5.07%

State: Oregon 0.86%

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Population by Race County: Jefferson State: Oregon
Persons % of Population Persons % of Population
White 16,902 65.65% 3,127,119 73.17%
Black/African American 139 0.54% 87,325 2.04%
American Indian/Alaskan Native 3,267 12.69% 65,161 1.52%
Asian 157 0.61% 203,101 4.75%
Native Hawaiian/Pacific Islander 30 0.12% 19,638 0.46%
Some Other Race 2,712 10.53% 288,541 6.75%
2+ Races 2,538 9.86% 482,957 11.30%
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Population by Ethnicity County: Jefferson State: Oregon
Persons % of Population Persons % of Population
Hispanic/Latino 5,530 21.48% 647,747 15.16%
Non-Hispanic/Latino 20,215 78.52% 3,626,095 84.84%
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Population by Age Group County: Jefferson State: Oregon
Persons % of Population Persons % of Population
0-4 1,503 5.84% 210,999 4.94%
5-9 1,521 5.91% 222,766 5.21%
10-14 1,651 6.41% 247,686 5.80%
15-17 999 3.88% 154,138 3.61%
18-20 982 3.81% 170,040 3.98%
21-24 1,218 4.73% 211,620 4.95%
25-34 2,951 11.46% 559,273 13.09%
35-44 3,075 11.94% 585,350 13.70%
45-54 2,825 10.97% 518,931 12.14%
55-64 3,230 12.55% 511,658 11.97%
65-74 3,363 13.06% 516,751 12.09%
75-84 1,922 7.47% 276,635 6.47%
85+ 505 1.96% 87,995 2.06%
Population by Age
Population by Age County: Jefferson State: Oregon
Persons % of Population Persons % of Population
Under 18 5,674 22.04% 835,589 19.55%
18+ 20,071 77.96% 3,438,253 80.45%
25+ 17,871 69.42% 3,056,593 71.52%
65+ 5,790 22.49% 881,381 20.62%
85+ 505 1.96% 87,995 2.06%

Median Age

County: Jefferson

41.7
Years

State: Oregon 41.2 Years

Population by Sex
Population by Sex County: Jefferson State: Oregon
Persons % of Population Persons % of Population
Male 13,287 51.61% 2,114,695 49.48%
Female 12,458 48.39% 2,159,147 50.52%
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Population Age 5+ by Language Spoken at Home County: Jefferson State: Oregon
Persons % of Population Age 5+ Persons % of Population Age 5+
Speak Only English 20,041 82.67% 3,461,322 85.19%
Speak Spanish 3,600 14.85% 356,870 8.78%
Speak Asian/Pac Islander Lang 30 0.12% 111,260 2.74%
Speak Indo-European Lang 113 0.47% 105,319 2.59%
Speak Other Lang 458 1.89% 28,072 0.69%
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Population Age 15+ by Marital Status County: Jefferson State: Oregon
Persons % of Population Age 15+ Persons % of Population Age 15+
Never Married 6,484 30.77% 1,155,995 32.18%
Married, Spouse present 9,253 43.92% 1,671,582 46.53%
Married, Spouse absent 1,140 5.41% 128,977 3.59%
Divorced 3,002 14.25% 457,460 12.73%
Widowed 1,191 5.65% 178,377 4.97%
Demographics information provided by Claritas, updated April 2024, under these terms of use.