Alton, Iowa Population 2024

1,228

Alton is a city located in Sioux County Iowa. Alton has a 2024 population of 1,228. Alton is currently declining at a rate of -0.32% annually and its population has decreased by -1.21% since the most recent census, which recorded a population of 1,243 in 2020.

The average household income in Alton is $100,016 with a poverty rate of 2.66%. The median rental costs in recent years comes to - per month, and the median house value is -. The median age in Alton is 34.2 years, 33.4 years for males, and 36.3 years for females.

Alton Demographics

According to the most recent ACS, the racial composition of Alton was:

  • White: 95.56%
  • Two or more races: 2.73%
  • Asian: 1.17%
  • Black or African American: 0.31%
  • Other race: 0.23%
  • Native American:
  • Native Hawaiian or Pacific Islander:
State
Iowa
Land Area (mi²)
1.9 sq mi
Density (mi²)
646.0/sq mi
Growth Since 2020
-1.21% (-15)
The current population of Alton, Iowa is 1,228 based on our projections of the latest US Census estimates.The last official US Census in 2020 recorded the population at 1,243.

Alton, Iowa Population 2024

Population by Race

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Race
Population
Percentage (of total)
White1,22695.56%
Two or more races352.73%
Asian151.17%
Black or African American40.31%
Other race30.23%
Native American
Native Hawaiian or Pacific Islander
showing: 7 rows

White

Two or more races

Asian

Black or African American

Other race

Native American

Native Hawaiian or Pacific Islander

Alton Population by Race

Alton Population Pyramid 2024

Alton Median Age

34.2

Total

33.4

Male

36.3

Female

Alton Adults

There are 1,015 adults, (194 of whom are seniors) in Alton.

Alton Age Dependency

56.3

Age Dependency Ratio

23.6

Old Age Dependency Ratio

32.6

Child Dependency Ratio

Alton Sex Ratio

Female64049.88%
Male64350.12%

Alton Population by Age

Alton Renter vs Owner Occupied by Household Type

Household Type
Count
Average Size
Owner
Renter
All5242.4585.114.9
Married3522.951000
Non Family1381.1450.749.3
Female252.47624
Male93.1155.644.4
showing: 5 rows

2.89

Average Family Size

2.45

Average Household Size

85.1%

Rate of Home Ownership

Married

Male

Female

NonFamily

owner

renter

Alton Households and Families

Male

Female

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Less Than 9th Grade

9th to 12th Grade

High School Graduate

Some College

Associates Degree

Bachelors Degree

Graduate Degree

Alton Educational Attainment by Sex (over 25)

Alton Educational Attainment by Race

High School Graduation Rate

Bachelors Rate

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The highest rate of high school graduation is among black people with a rate of 100%.

The highest rate of bachelors degrees is among black people with a rate of 100%.

Alton Educational Attainment by Race

All

Male

Female

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$45,048

Average Earnings

$54,458

Average Male

$33,088

Average Female

Alton Earnings by Educational Attainment

Alton Language by Age

Only English

Spanish

Other Indo-European Languages

Asian and Pacific Island Languages

Other Languages

Alton Language

92.54% of Alton residents speak only English, while 7.46% speak other languages. The non-English language spoken by the largest group is Spanish, which is spoken by 6.08% of the population.

Alton Language

Alton Poverty by Race

rate

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Name
Total
In Poverty
Poverty Rate
White1,113343.05%
showing: 1 rows

2.66%

Overall Poverty Rate

2.81%

Male Poverty Rate

2.5%

Female Poverty Rate

Poverty in Alton

The race most likely to be in poverty in Alton is White, with 3.05% below the poverty level.

The race least likely to be in poverty in Alton is White, with 3.05% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 0.53%. Among those working part-time, it was 7.09%, and for those that did not work, the poverty rate was .

Alton Poverty

rate

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Rate
Poverty
High School3.82%
Bachelors or Greater1.89%
Less Than 9th Grade
Some College
showing: 4 rows

Alton Poverty Rate by Education

rate

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Rate
Poverty
Male Employed1.82%
Male Unemployed
Female Employed0.77%
Female Unemployed
showing: 4 rows

Alton Poverty Rate by Employment Status and Sex

Alton Income by Household Type

Households

Families

MarriedFamilies

NonFamilies

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mean

median

Income by Household Type

Alton Marital Status

Married

Widowed

Divorced

Separated

NeverMarried

Marriage Rates

68.3%

Overall Marriage Rate

64.8%

Male Marriage Rate

72.0%

Female Marriage Rate

Alton Married by Age and Sex

male

female

Alton Marriage

The age group where males are most likely to be married is Over 65, while the female age group most likely to be married is 45-54.

Alton Marital Status by Race

Married

Widowed

Divorced

Separated

NeverMarried

Alton Marital Status

Second Gulf War

First Gulf War

Vietnam

Korea

World War II

39

Number of Veterans

37

Male Veterans

2

Female Veterans

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Alton Veterans by War

count

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Alton Veterans by Age

count

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Alton Veterans by Race

Alton Veterans by Education

Less Than 9th Grade

High School Graduate

Some College

Bachelors or Greater

Veteran Poverty Rate

61.54%

Veteran Disability Rate

Alton Veterans by Education

LaborForceParticipation

76.7%

Labor Force Participation

74.9%

Employment Rate

2.3%

Unemployment Rate

Alton Employment by Age

LaborForceParticipation

Alton Employment by Race

LaborForceParticipation

Alton Employment by Education

Origin of Non-Citizens

Europe

Asia

Africa

Oceania

Latin America

North America

Non citizens include legal permanent residents (green card holders), international students, temporary workers, humanitarian migrants, and illegal immigrants.

Origin of Naturalized Citizens

Europe

Asia

Africa

Oceania

Latin America

North America

73.27%

Born in Alton

95.01%

Native Born

4.99%

Foreign Born

2.26%

Non Citizen

2.73%

Naturalized

Place of Birth

95.01% of Alton residents were born in the United States, with 73.27% having been born in Iowa. 2.26% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Latin America.

Alton Place of Birth

Note: data after 2022 is projected based on recent change

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Year
Population
Growth
Growth Rate
20291,208-4-0.33%
20281,212-4-0.33%
20271,216-4-0.33%
20261,220-4-0.33%
20251,224-4-0.33%
20241,228-4-0.32%
20231,232-4-0.32%
20221,236-4-0.32%
20211,240-3-0.24%
20201,243-8-0.64%
20191,251-6-0.48%
20181,257-3-0.24%
20171,260-9-0.71%
20161,269-1-0.08%
20151,27060.47%
20141,264110.88%
20131,25370.56%
20121,246161.3%
20111,23030.24%
20101,227
showing: 20 rows

Alton Population by Year