Johnston City, Iowa
As of the census of 2000, there were 8649 residents, 3216 households, and 2318 families in the city. The population density was 602.8 people per square mile (232.74/kmē), it is 596th most densely populated city in Iowa. There were 3406 housing units at an average density of 237.4 per square mile (91.66/kmē). The average household size was 2.61 people, and the average family size was 3.13 people. In the city Age distribution was 29.7% under the age of 18, 5.2% from 18 to 24, 31.6% from 25 to 44, 22.6% from 45 to 64, and 10.9% who were 65 or older. For every 100 males there were 103.6 females. For every 100 males age 18 and over, there were 112.7 females. The median age of the city's population was 36.3 years, The median age of males was 34.7 years, for females the median age was 37.7 years. The racial makeup of the city was 8320 White, 50 Black or African American, 9 American Indian, 173 Asian, Native Hawaiian, 55 from two or more races and 42 Ohter races.
The median income for a household in the city was $76094, it is second wealthiest city by median household income in Iowa. The median income for a family in the city was $97322, it would be the highest city by median family income in the U.S. state of Iowa. The per capita income for the city was $36407, it is third wealthiest city by per capita income in Iowa. The median income is $37218, Males have a median income of $51650 versus $29217 for females.
In 2000, 2410 pupils and students, of which 1262 are male and 1148 are female, 27.86% of the total population, are in the education system. Of which, total enrollment of student are in, 235 nursery or pri school, 94 kindergarten, 1185 elementary school, 616 high school and 280 College graduate school.
| Year | Population |
|---|---|
| April 2000 census | 8649 |
| April 2000 Estimate | 8749 |
| July 2000 Estimate | 8878 |
| July 2001 Estimate | 9401 |
| July 2002 Estimate | 10243 |
| July 2003 Estimate | 11256 |
| July 2004 Estimate | 12618 |
| July 2005 Estimate | 13632 |
| July 2006 Estimate | 14513 |
| July 2007 Estimate | 15387 |
| July 2008 Estimate | 15691 |
| School | Male | Female | Total |
|---|---|---|---|
| Nursery school | 133 | 102 | 235 |
| Kindergarten | 63 | 31 | 94 |
| Elementary school | 613 | 572 | 1185 |
| High school | 343 | 273 | 616 |
| College or graduate school | 110 | 170 | 280 |
| Place | Median household income | Median family income | Per capita income |
|---|---|---|---|
| Johnston city, Iowa | $76094 | $97322 | $36407 |
| Polk County, Iowa | $46116 | $56560 | $23654 |
| Iowa, United States | $39469 | $48005 | $19674 |
| United States | $41994 | $50046 | $21587 |