Washington County, Minnesota
As of the census of 2000, there were 201130 people, 71462 households, and 54665 families living in the county. The population density was 513.5 people per square mile (198.26/kmē), giving it the fifth most densely populated county among the Minnesota. There were 73635 housing units at an average density of 188 per square mile (72.59/kmē). The average household size was 2.77 persons, and the average family size was 3.19 persons. Age range in the county was well distributed with 29.4% under the age of 18, 6.8% from 18 to 24, 32.9% from 25 to 44, 23.2% from 45 to 64, and 7.6% who were 65 or older. For every 100 females there were 98.8 males. For every 100 females age 18 and over, there were 96.8 males. It has an estimated population (as of July 2008) of 229173, The racial or ethnic makeup of the county was 89.96% White, 3.25% Black or African American, 0.49% American Indian, 4.73% Asian, 0.04% Native Hawaiian, and 1.53% from two or more races.
The median income for a household in the county was $66305, it is the second highest county by median household income in the U.S. state of Minnesota. The median income for a family in the county was $74576, it is Minnesota's wealthiest county by median family income. The per capita income for the county was $28148, making its Minnesota's third highest county by per capita income.
In 2000, 58157 pupils and students, of which 50.74% are male and 49.26% are female, 28.92% of the total population, are in the education system. Of which, percentage of enrollment student are in, 8% nursery or pri school, 5.64% kindergarten, 47.03% elementary school, 23.31% high school and 16.03% College graduate school.
| Rank | City | County | Total Area mi2 | Land Area mi2 | Water Area mi2 | Population | Density mi2 | Per capita Income | House hold Income |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Hastings City | Dakota County, Washington County | 10.99 | 10.12 | 0.87 | 18204 | 1798.2 | 22075 | 53145 |
| 2 | Afton City | Washington County | 26.37 | 25.18 | 1.19 | 2839 | 112.7 | 36338 | 89095 |
| 3 | Bayport City | Washington County | 1.82 | 1.82 | 0 | 3162 | 1739 | 18490 | 53026 |
| 4 | Birchwood Village City | Washington County | 0.34 | 0.34 | 0 | 968 | 2808.2 | 40102 | 81941 |
| 5 | Cottage Grove City | Washington County | 37.92 | 33.98 | 3.94 | 30582 | 899.9 | 23348 | 65825 |
| 6 | Dellwood City | Washington County | 2.85 | 2.76 | 0.09 | 1033 | 374.5 | 61592 | 129136 |
| 7 | Forest Lake City | Washington County | 4.25 | 4.19 | 0.05 | 6798 | 1620.8 | 20058 | 44419 |
| 8 | Grant City | Washington County | 27.02 | 25.68 | 1.33 | 4026 | 156.8 | 44486 | 98228 |
| 9 | Hugo City | Washington County | 36.01 | 33.99 | 2.02 | 6363 | 187.2 | 24334 | 63450 |
| 10 | Lake Elmo City | Washington County | 24.38 | 22.85 | 1.53 | 6863 | 300.4 | 33007 | 76876 |
| 11 | Lake St. Croix Beach City | Washington County | 0.99 | 0.58 | 0.42 | 1140 | 1982.4 | 25776 | 60652 |
| 12 | Lakeland City | Washington County | 2.93 | 2.1 | 0.82 | 1917 | 910.9 | 30019 | 76530 |
| 13 | Lakeland Shores City | Washington County | 0.74 | 0.32 | 0.41 | 355 | 1092.8 | 29789 | 80907 |
| 14 | Landfall City | Washington County | 0.1 | 0.08 | 0.02 | 700 | 8996.8 | 15588 | 31136 |
| 15 | Mahtomedi City | Washington County | 5.03 | 3.61 | 1.42 | 7563 | 2095.4 | 28930 | 72215 |
| 16 | Marine On St. Croix City | Washington County | 4.17 | 3.94 | 0.23 | 602 | 152.8 | 32383 | 66250 |
| 17 | Newport City | Washington County | 3.91 | 3.66 | 0.25 | 3715 | 1014.4 | 22310 | 45373 |
| 18 | Oak Park Heights City | Washington County | 3.01 | 3.01 | 0 | 3957 | 1313.6 | 23293 | 48425 |
| 19 | Oakdale City | Washington County | 11.27 | 11.07 | 0.21 | 26653 | 2408.4 | 24107 | 56299 |
| 20 | Pine Springs City | Washington County | 0.94 | 0.83 | 0.11 | 421 | 509 | 38383 | 102496 |
| 21 | St. Marys Point City | Washington County | 0.4 | 0.4 | 0 | 344 | 853 | 36905 | 61750 |
| 22 | St. Paul Park City | Washington County | 2.5 | 2.38 | 0.12 | 5070 | 2131.6 | 20234 | 50805 |
| 23 | Stillwater City | Washington County | 7.3 | 6.47 | 0.83 | 15143 | 2340 | 27163 | 57154 |
| 24 | Willernie City | Washington County | 0.13 | 0.13 | 0 | 549 | 4285.3 | 19541 | 42500 |
| 25 | Woodbury City | Washington County | 35.61 | 35 | 0.62 | 46463 | 1327.7 | 32606 | 76109 |
| Year | Population |
|---|---|
| April 2000 census | 201130 |
| April 2000 Estimate | 201128 |
| July 2000 Estimate | 202529 |
| July 2001 Estimate | 206633 |
| July 2002 Estimate | 209170 |
| July 2003 Estimate | 212285 |
| July 2004 Estimate | 213838 |
| July 2005 Estimate | 217377 |
| July 2006 Estimate | 221626 |
| July 2007 Estimate | 225792 |
| July 2008 Estimate | 229173 |
| School | Male | Female | Total |
|---|---|---|---|
| Nursery school | 2563 | 2088 | 4651 |
| Kindergarten | 1682 | 1596 | 3278 |
| Elementary school | 14113 | 13239 | 27352 |
| High school | 6878 | 6677 | 13555 |
| College or graduate school | 4271 | 5050 | 9321 |
| Place | Median household income | Median family income | Per capita income |
|---|---|---|---|
| Washington County, Minnesota | $66305 | $74576 | $28148 |
| Minnesota, United States | $47111 | $56874 | $23198 |
| United States | $41994 | $50046 | $21587 |