2010 census

The 2010 census recorded a population of 17,278 in the city, with a population density of . There were 6,618 housing units, of which 6,369 were occupied.

The racial makeup of the city in the 2010 census was 91.0% White American

White American

White Americans are people of the United States who are considered or consider themselves White. The United States Census Bureau defines White people as those "having origins in any of the original peoples of Europe, the Middle East, or North Africa...

, 2.4% African American

African American

African Americans are citizens or residents of the United States who have at least partial ancestry from any of the native populations of Sub-Saharan Africa and are the direct descendants of enslaved Africans within the boundaries of the present United States...

, 0.1% Native Americans in the United States

Native Americans in the United States

Native Americans in the United States are the indigenous peoples in North America within the boundaries of the present-day continental United States, parts of Alaska, and the island state of Hawaii. They are composed of numerous, distinct tribes, states, and ethnic groups, many of which survive as...

, 4.6% Asian American

Asian American

Asian Americans are Americans of Asian descent. The U.S. Census Bureau definition of Asians as "Asian” refers to a person having origins in any of the original peoples of the Far East, Southeast Asia, or the Indian subcontinent, including, for example, Cambodia, China, India, Indonesia, Japan,...

, 0.0% Native Hawaiians

Native Hawaiians

Native Hawaiians refers to the indigenous Polynesian people of the Hawaiian Islands or their descendants. Native Hawaiians trace their ancestry back to the original Polynesian settlers of Hawaii.According to the U.S...

 or Pacific Islander American

Pacific Islander American

Pacific Islander Americans, also known as Oceanian Americans, are residents of the United States with original ancestry from Oceania. They represent the smallest racial group counted in the United States census of 2000. They numbered 874,000 people or 0.3 percent of the United States population...

, 0.6% other races and 1.5% were from two or more races. Of those 2.0% were Hispanic and Latino Americans

Hispanic and Latino Americans

Hispanic or Latino Americans are Americans with origins in the Hispanic countries of Latin America or in Spain, and in general all persons in the United States who self-identify as Hispanic or Latino.1990 Census of Population and Housing: A self-designated classification for people whose origins...

.

2000 census

As of the census

Census

A census is the procedure of systematically acquiring and recording information about the members of a given population. It is a regularly occurring and official count of a particular population. The term is used mostly in connection with national population and housing censuses; other common...

of 2000, there were 8,649 people, 3,216 households, and 2,318 families residing in the city. The estimated population of Johnston in 2009 was 16,161 people. The population density

Population density

Population density is a measurement of population per unit area or unit volume. It is frequently applied to living organisms, and particularly to humans...

 was 602.8 people per square mile (232.7/km²). There were 3,406 housing units at an average density of 237.4 per square mile (91.6/km²). The racial makeup of the city was 96.20% White, 0.58% African American, 0.10% Native American, 2.00% Asian, 0.49% from other races

Race (United States Census)

Race and ethnicity in the United States Census, as defined by the Federal Office of Management and Budget and the United States Census Bureau, are self-identification data items in which residents choose the race or races with which they most closely identify, and indicate whether or not they are...

, and 0.64% from two or more races. Hispanic or Latino of any race were 1.53% of the population.

There were 3,216 households out of which 39.5% had children under the age of 18 living with them, 65.1% were married couples

Marriage

Marriage is a social union or legal contract between people that creates kinship. It is an institution in which interpersonal relationships, usually intimate and sexual, are acknowledged in a variety of ways, depending on the culture or subculture in which it is found...

 living together, 5.1% had a female householder with no husband present, and 27.9% were non-families. 23.3% of all households were made up of individuals and 9.3% had someone living alone who was 65 years of age or older. The average household size was 2.61 and the average family size was 3.13.

In the city the population was spread out with 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 years of age or older. The median age was 36 years. For every 100 females there were 96.6 males. For every 100 females age 18 and over, there were 88.8 males.

The median income for a household in the city was $76,094, and the median income for a family was $97,322. Males had a median income of $61,585 versus $36,008 for females. The per capita income

Per capita income

Per capita income or income per person is a measure of mean income within an economic aggregate, such as a country or city. It is calculated by taking a measure of all sources of income in the aggregate and dividing it by the total population...

 for the city was $36,407. About 2.0% of families and 4.1% of the population were below the poverty line, including 2.4% of those under age 18 and 10.8% of those age 65 or over.

External links

• City of Johnston
• Johnston Chamber of Commerce
• Johnston Community School District
• Iowa Chinese Language School
• City-Data Comprehensive statistical data and more about Johnston