Jefferson
County in Wisconsin
Contents: Subdivision
The population development in Jefferson as well as related information and services (Wikipedia, Google, images).
icon links to further information about a selected division including its population structure (gender, age groups, age distribution, urbanization, »race«, ethnicity).| Name | Status | Population Census 1990-04-01 | Population Census 2000-04-01 | Population Census 2010-04-01 | Population Census 2020-04-01 | Population Estimate 2025-07-01 | |
|---|---|---|---|---|---|---|---|
| Jefferson | County | 67,783 | 74,021 | 83,686 | 86,171 | 86,245 | |
| Aztalan | Town | 1,366 | 1,380 | 1,444 | 1,376 | 1,373 | → |
| Cambridge (part) | Village | 87 | 120 | 109 | 103 | 108 | → |
| Cold Spring | Town | 659 | 758 | 730 | 729 | 728 | → |
| Concord | Town | 1,846 | 2,035 | 2,050 | 1,987 | 1,964 | → |
| Farmington | Town | 1,347 | 1,407 | 1,421 | 1,410 | 1,398 | → |
| Fort Atkinson | City | 10,309 | 11,623 | 12,395 | 12,597 | 12,388 | → |
| Hebron | Town | 977 | 1,143 | 1,094 | 1,048 | 1,054 | → |
| Ixonia | Town | 2,684 | 2,909 | 4,388 | 5,132 | 5,083 | → |
| Jefferson | City | 6,373 | 7,391 | 7,985 | 7,788 | 7,814 | → |
| Jefferson | Town | 2,475 | 2,247 | 2,183 | 2,066 | 2,060 | → |
| Johnson Creek | Village | 1,299 | 1,655 | 2,729 | 3,324 | 3,435 | → |
| Koshkonong | Town | 2,890 | 3,395 | 3,653 | 3,735 | 3,776 | → |
| Lac La Belle (part) | Village | 105 | 16 | 1 | 0 | 0 | → |
| Lake Mills | City | 4,426 | 5,011 | 5,719 | 6,223 | 6,655 | → |
| Lake Mills | Town | 1,556 | 1,959 | 2,057 | 2,196 | 2,206 | → |
| Milford | Town | 1,007 | 1,050 | 1,099 | 1,110 | 1,108 | → |
| Oakland | Town | 2,519 | 3,098 | 3,100 | 3,223 | 3,215 | → |
| Palmyra | Village | 1,543 | 1,767 | 1,790 | 1,730 | 1,720 | → |
| Palmyra | Town | 1,175 | 1,142 | 1,177 | 1,211 | 1,230 | → |
| Sullivan | Village | 451 | 681 | 667 | 653 | 663 | → |
| Sullivan | Town | 1,933 | 2,145 | 2,211 | 2,291 | 2,318 | → |
| Sumner | Town | 824 | 908 | 832 | 846 | 829 | → |
| Waterloo | City | 2,708 | 3,263 | 3,340 | 3,486 | 3,600 | → |
| Waterloo | Town | 698 | 831 | 907 | 873 | 876 | → |
| Watertown | Town | 1,754 | 1,872 | 1,972 | 1,918 | 1,938 | → |
| Watertown (part) | City | 12,467 | 13,575 | 15,402 | 14,694 | 14,485 | → |
| Whitewater (part) | City | 2,490 | 2,642 | 3,237 | 4,422 | 4,481 | → |
| Wisconsin | State | 4,891,769 | 5,363,675 | 5,686,986 | 5,894,323 | 5,960,975 |
Source: U.S. Census Bureau.
Explanation: Latest available rebased population figures are used. In case of significant changes, they were recalculated by using census block data.
Further information about the population structure:
| Gender (C 2020) | |
|---|---|
| Males | 42,684 |
| Females | 42,216 |
| Age Groups (C 2020) | |
|---|---|
| 0-17 years | 18,551 |
| 18-64 years | 51,177 |
| 65+ years | 15,172 |
| Age Distribution (C 2020) | |
|---|---|
| 80+ years | 3,222 |
| 70-79 years | 6,706 |
| 60-69 years | 11,207 |
| 50-59 years | 12,095 |
| 40-49 years | 10,355 |
| 30-39 years | 10,498 |
| 20-29 years | 9,134 |
| 10-19 years | 12,424 |
| 0-9 years | 9,259 |
| Urbanization (C 2020) | |
|---|---|
| Rural | 37,781 |
| Urban | 47,119 |
| »Race« (C 2020) | |
|---|---|
| White | 75,145 |
| Black/African American | 888 |
| Indigenous | 365 |
| Asian | 672 |
| Pacific Islander | 27 |
| Some other | 2,858 |
| 2 or more | 4,945 |
| Ethnicity (C 2020) | |
|---|---|
| Hispanic or Latino | 7,068 |
| Other | 77,832 |