Alton, Illinois Population 2024

24,801

Alton is a city located in Madison County Illinois. Alton has a 2024 population of 24,801. Alton is currently declining at a rate of -0.83% annually and its population has decreased by -3.14% since the most recent census, which recorded a population of 25,606 in 2020.

The average household income in Alton is $64,590 with a poverty rate of 24.52%. The median rental costs in recent years comes to - per month, and the median house value is -. The median age in Alton is 38.3 years, 36.4 years for males, and 40.8 years for females.

Alton Demographics

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

  • White: 66.7%
  • Black or African American: 24.74%
  • Two or more races: 6.74%
  • Asian: 0.92%
  • Other race: 0.74%
  • Native American: 0.17%
  • Native Hawaiian or Pacific Islander:
Land Area (mi²)
15.5 sq mi
Density (mi²)
1,600.20/sq mi
Growth Since 2020
-3.14% (-805)
The current population of Alton, Illinois is 24,801 based on our projections of the latest US Census estimates.The last official US Census in 2020 recorded the population at 25,606.

Alton, Illinois Population 2024

Population by Race

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Race
Population
Percentage (of total)
White17,10366.7%
Black or African American6,34324.74%
Two or more races1,7296.74%
Asian2350.92%
Other race1890.74%
Native American430.17%
Native Hawaiian or Pacific Islander
showing: 7 rows

White

Black or African American

Two or more races

Asian

Other race

Native American

Native Hawaiian or Pacific Islander

Alton Population by Race

Alton Population Pyramid 2024

Alton Median Age

38.3

Total

36.4

Male

40.8

Female

Alton Adults

There are 19,609 adults, (4,403 of whom are seniors) in Alton.

Alton Age Dependency

68.6

Age Dependency Ratio

29

Old Age Dependency Ratio

39.7

Child Dependency Ratio

Alton Sex Ratio

Female13,39852.25%
Male12,24447.75%

Alton Population by Age

Alton Renter vs Owner Occupied by Household Type

Household Type
Count
Average Size
Owner
Renter
All10,8782.357.342.7
Non Family5,2271.2751.548.5
Married3,1403.0776.923.1
Female2,0753.5742.257.8
Male4363.255842
showing: 5 rows

3.12

Average Family Size

2.3

Average Household Size

57.3%

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 2+ races people with a rate of 95.08%.

The highest rate of bachelors degrees is among asian people with a rate of 43.43%.

Alton Educational Attainment by Race

All

Male

Female

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$36,776

Average Earnings

$40,851

Average Male

$33,978

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

96.78% of Alton residents speak only English, while 3.22% speak other languages. The non-English language spoken by the largest group is Other Indo-European, which is spoken by 1.24% of the population.

Alton Language

Alton Poverty by Race

rate

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Name
Total
In Poverty
Poverty Rate
White16,2212,75016.95%
Black6,2142,65942.79%
Multiple1,71450429.4%
Hispanic62615124.12%
Other1846032.61%
Asian2342912.39%
Native431534.88%
showing: 7 rows

24.52%

Overall Poverty Rate

24.81%

Male Poverty Rate

24.25%

Female Poverty Rate

Poverty in Alton

The race most likely to be in poverty in Alton is Black, with 42.79% below the poverty level.

The race least likely to be in poverty in Alton is Asian, with 12.39% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 4.91%. Among those working part-time, it was 29.66%, and for those that did not work, the poverty rate was 34.77%.

Alton Poverty

rate

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Rate
Poverty
Less Than 9th Grade48.63%
High School21.76%
Some College15.63%
Bachelors or Greater10.49%
showing: 4 rows

Alton Poverty Rate by Education

rate

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Rate
Poverty
Male Unemployed48.95%
Female Unemployed48.94%
Female Employed13.12%
Male Employed8.82%
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

34.0%

Overall Marriage Rate

36.9%

Male Marriage Rate

31.4%

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

1,804

Number of Veterans

1,608

Male Veterans

196

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

10.07%

Veteran Poverty Rate

42.31%

Veteran Disability Rate

Alton Veterans by Education

LaborForceParticipation

60.1%

Labor Force Participation

56.1%

Employment Rate

6.6%

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

71.43%

Born in Alton

98.05%

Native Born

1.95%

Foreign Born

0.82%

Non Citizen

1.13%

Naturalized

Place of Birth

98.05% of Alton residents were born in the United States, with 71.43% having been born in Illinois. 0.82% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Asia.

Alton Place of Birth

Note: data after 2022 is projected based on recent change

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Year
Population
Growth
Growth Rate
202923,761-208-0.87%
202823,969-208-0.86%
202724,177-208-0.85%
202624,385-208-0.85%
202524,593-208-0.84%
202424,801-208-0.83%
202325,009-208-0.82%
202225,217-208-0.82%
202125,425-181-0.71%
202025,606-656-2.5%
201926,262-245-0.92%
201826,507-223-0.83%
201726,730-145-0.54%
201626,875-136-0.5%
201527,011-193-0.71%
201427,204-186-0.68%
201327,390-124-0.45%
201227,514-194-0.7%
201127,708-193-0.69%
201027,901-2,595-8.51%
200030,496-2,409-7.32%
199032,905-1,266-3.7%
198034,171-5,529-13.93%
197039,700-3,347-7.78%
196043,04710,49732.25%
195032,5501,2954.14%
194031,2551,1043.66%
193030,1515,46922.16%
192024,6827,15440.81%
191017,5283,31823.35%
190014,2103,91638.04%
189010,2941,31914.7%
18808,9753103.58%
18708,6652,33336.84%
18606,3322,74776.62%
18503,585
showing: 36 rows

Alton Population by Year