Delaware County, Iowa
As of the census of 2000, there were 18404 people in the county, organized into 6834 households, and 5030 families living in the county. The population density was 31.8 people per square mile (12.28/kmē), it is 40th most densely populated county in Iowa. There were 7682 housing units at an average density of 13.3 per square mile (5.14/kmē). The average household size was 2.66 and the average family size was 3.15. In the Delaware County, 29% of the population was under the age of 18, 7% were 18 to 24, 27.6% were 25 to 44, 21.5% were 45 to 64, and 15% who were 65 or older. For every 100 females there were 98.4 males. For every 100 females age 18 and over, there were 96.6 males. According to July 2008 Census Bureau estimates, the population of the county is 17301, The racial makeup of the county was 99.19% White, 0.1% Black or African American, 0.13% American Indian, 0.17% Asian, 0.01% Native Hawaiian, and 0.4% from two or more races.
The median income for a household in the county was $37168, it is the 46th highest county by median household income in the U.S. state of Iowa. The median income for a family in the county was $43607, making it the 52nd wealthiest county by median family income among the Iowa. The per capita income for the county was $17327, it would be the 60th highest county by per capita income in the U.S. state of Iowa.
In 2000, 5181 pupils and students, of which 49.76% are male and 50.24% are female, 28.15% of the total population, are in the education system. Of which, percentage of enrollment student are in, 8.18% nursery or pri school, 6.18% kindergarten, 46.94% elementary school, 27.95% high school and 10.75% 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 | Colesburg City | Delaware County | 0.29 | 0.29 | 0 | 412 | 1399.9 | 16638 | 33068 |
| 2 | Delaware City | Delaware County | 0.81 | 0.8 | 0.01 | 188 | 235.4 | 18361 | 36875 |
| 3 | Delhi City | Delaware County | 1.03 | 0.97 | 0.05 | 458 | 470.8 | 19751 | 38636 |
| 4 | Dundee City | Delaware County | 0.41 | 0.41 | 0 | 179 | 441.7 | 13531 | 26719 |
| 5 | Earlville City | Delaware County | 0.55 | 0.55 | 0 | 900 | 1648 | 14855 | 38194 |
| 6 | Edgewood City | Delaware County, Clayton County | 0.84 | 0.84 | 0 | 923 | 1092.6 | 16187 | 35455 |
| 7 | Greeley City | Delaware County | 0.38 | 0.38 | 0 | 276 | 729.7 | 15508 | 35000 |
| 8 | Hopkinton City | Delaware County | 0.62 | 0.62 | 0 | 681 | 1103.5 | 13707 | 33958 |
| 9 | Manchester City | Delaware County | 4.14 | 4.13 | 0.02 | 5257 | 1274 | 18811 | 31099 |
| 10 | Masonville City | Delaware County | 0.33 | 0.33 | 0 | 104 | 315.3 | 20166 | 32000 |
| 11 | Ryan City | Delaware County | 0.43 | 0.43 | 0 | 410 | 953.1 | 14576 | 34250 |
| 12 | Dyersville City | Dubuque County, Delaware County | 4.6 | 4.6 | 0.01 | 4035 | 878.1 | 17195 | 38469 |
| Year | Population |
|---|---|
| April 2000 census | 18404 |
| April 2000 Estimate | 18404 |
| July 2000 Estimate | 18388 |
| July 2001 Estimate | 18212 |
| July 2002 Estimate | 18123 |
| July 2003 Estimate | 17978 |
| July 2004 Estimate | 17798 |
| July 2005 Estimate | 17622 |
| July 2006 Estimate | 17511 |
| July 2007 Estimate | 17450 |
| July 2008 Estimate | 17301 |
| School | Male | Female | Total |
|---|---|---|---|
| Nursery school | 239 | 185 | 424 |
| Kindergarten | 180 | 140 | 320 |
| Elementary school | 1203 | 1229 | 2432 |
| High school | 732 | 716 | 1448 |
| College or graduate school | 224 | 333 | 557 |
| Place | Median household income | Median family income | Per capita income |
|---|---|---|---|
| Delaware County, Iowa | $37168 | $43607 | $17327 |
| Iowa, United States | $39469 | $48005 | $19674 |
| United States | $41994 | $50046 | $21587 |