Alton, Madison County, Illinois Population and Demographics

In this article, we'll explore the population statistics for Alton, Illinois, including popular demographics data like median age, number of households, household income, gender, employment and unemployment rates, occupations, religion, and more.

We are using the latest American Community Survey (ACS) 5-Year survey data from the US Census Bureau, which is accurate up to 2021.

Table of Contents

Population

There is a lot of data that lets us see how many people live in Alton, Illinois. The most basic data is the total population, which is the total number of people living in Alton, Illinois. The estimated population of Alton, Illinois is 25,902 people, with a median age of 38.1.

We can look at the total population in Alton over the last 5 years to see how much it has changed.

Year Population Change 5-Year Change
2021
25,902
-2.22% -4.20%
2020
26,490
-0.56% -
2019
26,640
-0.91% -
2018
26,884
-0.57% -
2017
27,037
- -

Population of Alton, Illinois by Race and Ethnicity

We can also look at how the population has changed over the last 5 years by each of the race/ethnicity types as defined by the US Census Bureau.

Race 2021 2017 Change
White
67.1%
67.3%
-0.30%
Black/African American
25.1%
26.1%
-3.83%
Native
0.2%
0.1%
+100.00%
Hispanic
1.9%
2%
-5.00%
Asian
0.6%
0.5%
+20.00%
Hawaiian/Pacific Islander
0%
0%
0.00%
Two Or More Races
5%
3.9%
+28.21%
Other
0.2%
0%
0.00%

This data can be very important for a number of reasons, including social and economic research, planning and development, and marketing to a multi-cultural population.

Note that the Native group includes both Native American and Alaskan Native people.

Population of Alton, Illinois by Age and Gender

The age and gender of a population is another interesting demographic statistic because it lets us track trends in the population over time. For example, we can see how the population has changed over the last 5 years by median age as a total, and also by male and female.

Year Total Male Female
2021 38.1 0% 36.1 +1.98% 40.2 -2.43%
2020 38.1 -1.8% 35.4 -0.28% 41.2 -0.72%
2019 38.8 0% 35.5 -0.56% 41.5 +0.73%
2018 38.8 +2.11% 35.7 +0.56% 41.2 +1.98%
2017 38 - 35.5 - 40.4 -

The median age of Alton, Illinois gives you an idea of the age distribution, with half of the population being older than the median age and half being younger.

This can then be used to infer and compare against birth rates, parent ages, and more metrics to understand the population. For example, an increasing median age indicates an aging population, which can be a sign of a declining population in terms of birth rates and workforce participation.

Age 2021 2017
(Years) Male Female Male Female
0 to 9 1,854 -5.56% 1,746 -0.21% 1,745 1,726
10 to 19 1,635 +7.67% 1,823 -6.35% 1,757 1,698
20 to 29 1,706 -11.52% 1,673 -26.05% 1,488 1,267
30 to 39 1,858 +1.05% 1,860 +10.4% 1,871 2,051
40 to 49 1,217 +10.99% 1,558 +7.73% 1,354 1,678
50 to 59 1,893 -13.26% 2,089 -31.74% 1,650 1,500
60 to 69 1,432 +8.38% 1,738 +9.41% 1,551 1,899
70+ 1,164 -17.23% 1,791 -5.19% 971 1,696

Median Household Income

The latest median household income of Alton, Illinois is $45,225.00.

In simple terms, the median income is the middle income of a group of people. Half of the people in the group make more than the median income, and half make less. The median income is a good indicator of the overall income of a group of people, and can be used to compare against other metrics such as the average income, per capita income, and more.

Median Income by Age

We can also look at the median income by age to see how the median income varies by age, and how it compares to the overall median income for Alton.

  • Under 25
    $23,393.00
  • 25 to 44
    $51,768.00
  • 45 to 64
    $51,856.00
  • 65 and over
    $33,261.00

Average Household Income

Whenever we ask what is the average household income in Alton, we are actually talking about the mean household income.

This is calculated by adding up all the incomes of all the households in Alton, and then dividing that number by the total number of households. This is a good way to get a general idea of the average income of a group of people, but it can be skewed by a very high or very low incomes.

The average household income of Alton, Illinois is currently $58,540.00.

In terms of accurately summarizing income at a geographic level, the median income is a better metric than the average income because it isn't affected by a small number of very high or very low incomes.

If you had an area where the average income was greater than the median, it can mean that there is significant income inequality, with income being concentrated in a small number of wealthy households.

1.58% of households in Alton are classed as high income households (making $200,000+ per year).

Household Income Tiers

The US Census Bureau divides households into income tiers based on the median income for the area. This is a good way to compare the income of Alton against other areas.

  • Less than $24,999
    28.17%
  • $25,000 to $49,999
    26.76%
  • $50,000 to $74,999
    18.92%
  • $75,000 to $99,999
    10.17%
  • $100,000 to $149,999
    11.08%
  • $150,000 to $199,999
    3.31%
  • $200,000 or more
    1.58%

Per Capita Income

The per capita income in Alton is $25,810.00.

Per capita income is the average income of a person in a given area. It is calculated by dividing the total income of Alton by the total population of Alton.

This is different from the average or mean income because it includes and accounts for all people in Alton, Illinois, including people like children, the elderly, unemployed people, retired people, and more.

Education Levels

We can also look at the education levels in Alton to see how many people have a high school degree, a bachelor's degree, or a graduate degree.

Educational attainment is a good indicator of the overall education level of a population, and can be used to compare against other metrics such as the average income, per capita income, and more to see how education levels affect income, unemployment rates, and more.

  • Master's degree or higher
    9.78%
  • Bachelor's degree
    23.39%
  • Some college or associate's degree
    17.22%
  • High school diploma or equivalent
    45.96%
  • Less than high school diploma
    3.64%

Employment

Employment rates are all based around the total population in Alton that are over the age of 16.

The total population of Alton over the age of 16 is 20,292.

Of those people, a total of 61.60% are working or actively looking for work. This is called the labor force participation rate.

The participation rate is a useful market measure because it shows the relative amount of labor resources available to the economy.

The employment to total population rate in Alton is 57.20%.

Employment by Age

We can look at the employment rates by age to see how it compares to the overall employment rate.

Age Population Participation Unemployment Rate
16 to 19 years 1,316 43.10% 5.30%
20 to 24 years 1,014 78.30% 9.10%
25 to 29 years 1,741 88.30% 10.90%
30 to 34 years 2,003 88.40% 8.90%
35 to 44 years 3,505 83.10% 2.20%
45 to 54 years 3,035 77.00% 7.10%
55 to 59 years 1,561 64.40% 8.10%
60 to 64 years 1,881 44.00% 11.40%
65 to 74 years 2,684 24.30% 7.40%
75 years and over 1,552 6.50% 14.90%

Employment by Race

Another very interesting employment statistic we can look at is the employment and unemployment rates by race in Alton. The table below shows the rates for each of the ethnicity groups types defined by the US Census Bureau.

Age Population Participation Unemployment Rate
White 14,613 61.00% 6.40%
Black or African American 4,805 61.70% 8.80%
American Indian and Alaska Native 48 83.30% 30.00%
Asian 133 72.90% 0.00%
Native Hawaiian and Other Pacific Islander 0 0.00% 0.00%
Other 164 31.70% 0.00%
Two or more races 529 81.30% 13.00%
Hispanic or Latino 358 54.50% 7.70%
Not Hispanic or Latino 14,403 61.20% 6.40%

Occupations

In this section we can look at the most common occupations in Alton as well as the gender breakdown and earnings of them.

The total population of civilian employees that are 16 years old or older in Alton is 11,598, with median earnings of $32,356.00.

Women in Alton, Illinois earning approximately 74.00% of the men's earnings.

Population Earnings
Total 11,598 $32,356.00
Male 5,557 $38,346.00
Female 6,041 $28,395.00

Occupations by Category

In the table below, we can break down the population and earnings even further by occupation. The list of occupation categories below will show you how many people are employed in each category and the median earnings of each profession.

Occupation Employed Earnings
Management 800 $49,342.00
Business and Financial 394 $57,273.00
Computer and Mathematical 378 $63,750.00
Architecture and Engineering 76 $71,111.00
Life, Physical, and Social Science 91 $61,587.00
Community and Social Service 203 $45,813.00
Legal 181 $40,625.00
Educational and Library 483 $37,850.00
Arts, Design, Entertainment, Sports, and Media 190 $37,833.00
Healthcare Practitioners 744 $53,316.00
Healthcare Support 807 $25,046.00
Firefighters and Protective Service 137 $35,781.00
Law Enforcement 79 $61,732.00
Food Preparation and Serving 1,352 $13,621.00
Building and Grounds Cleaning 450 $18,796.00
Personal Care and Service 327 $15,365.00
Sales 824 $26,017.00
Office and Administrative Support 1,135 $31,434.00
Farming, Fishing, and Forestry 0 $0.00
Construction and Extraction 476 $45,069.00
Installation, Maintenance, and Repair 483 $39,496.00
Production 656 $30,000.00
Transportation and Material Moving 578 $41,767.00

Occupations by Gender

The table below shows the same occupations from the list above, but we have split them by male and female to see how many male and females work in each occupation, the median earnings, and the male to female ratio of earnings.

That last metric is important because it can be used to look at the gender pay gap between men and women.

Occupation Male Female
Population Earnings Population Earnings
Management 445 $47,159.00 355 $52,132.00
Business and Financial 117 $37,663.00 277 $65,046.00
Computer and Mathematical 195 $84,821.00 183 $62,212.00
Architecture and Engineering 76 $71,111.00 0 $0.00
Life, Physical, and Social Science 40 $38,269.00 51 $62,452.00
Community and Social Service 8 $0.00 195 $45,313.00
Legal 49 $58,533.00 132 $40,150.00
Educational and Library 161 $50,795.00 322 $22,000.00
Arts, Design, Entertainment, Sports, and Media 116 $42,625.00 74 $37,667.00
Healthcare Practitioners 195 $44,107.00 549 $53,954.00
Healthcare Support 131 $25,444.00 676 $24,000.00
Firefighters and Protective Service 78 $68,889.00 59 $11,850.00
Law Enforcement 79 $61,732.00 0 $0.00
Food Preparation and Serving 519 $11,964.00 833 $14,574.00
Building and Grounds Cleaning 181 $30,673.00 269 $16,750.00
Personal Care and Service 85 $57,585.00 242 $13,478.00
Sales 318 $39,688.00 506 $25,494.00
Office and Administrative Support 379 $30,483.00 756 $32,155.00
Farming, Fishing, and Forestry 0 $0.00 0 $0.00
Construction and Extraction 465 $44,766.00 11 $0.00
Installation, Maintenance, and Repair 463 $39,539.00 20 $4,773.00
Production 438 $35,405.00 218 $14,236.00
Transportation and Material Moving 434 $49,167.00 144 $33,654.00

Households and Family Size

A household defined bu the US Census Bureau is a group of people who occupy a housing unit. A housing unit is a house, apartment, mobile home, group of rooms, or single room occupied as separate living quarters.

There are currently 11,097 households in Alton, with an average household size of 2.29 people.

A family is defined as a group of two or more people related by birth, marriage, or adoption who live together in the same household.

There are 5,853 families in Alton with an average family size of 3.1 people.

Households by Marital Status

The four categories of household by marital status are:

  • Married-couple family
  • Male householder with no spouse present
  • Female household with no spouse present
  • Nonfamily household

The table below shows the total number of households and families, with the average sizes of each.

Married Male Female Nonfamily
Total Households 3,242 512 2,099 5,244
Average Household Size 3.07 3.04 3.52 1.23
Total Families 3,242 512 2,099 0
Average Household Size 3.04 2.69 3.3 0

Poverty

Of the 5,853 families in Alton, 18.80% are considered to be below the poverty threshold.

The table below shows the latest poverty thresholds in Alton:

Household Size Poverty Threshold
1 Person $14,580.00
2 People $19,720.00
3 People $24,860.00
4 People $30,000.00
5 People $35,140.00
6 People $40,280.00
7 People $45,420.00
8 People $50,560.00

Housing

There are 12,836 housing units in Alton, Illinois.

The table below shows the split between occupied and vacant units:

Total Percentage
Occupied 11,097 86.45%
Vacant 1,739 13.55%

34.11% of the total 12,836 housing units in Alton are rental units. This is approximately 4,378 properties.

For owner-occupied housing units, a total of 6,550 are occupied by the owner - or 51.03% of the total.

Rental Rates

The median rent for a property in Alton is $824.00.

In the chart below, we can look at the number of rental properties in Alton that fall into a particular rent range. These can then be used to compare with other areas, or to see how they have changed over time.

  • No rent paid
    169
  • Less than $500
    745
  • $500 to $999
    2,187
  • $1,000 to $1,499
    1,299
  • $1,500 to $1,999
    135
  • $2,000 to $2,499
    0
  • $2,500 to $2,999
    12
  • $3,000 or more
    0

Property Value

The median value of a property in Alton is $82,000.00.

Just like with rental rates, we can look at the number of properties in Alton that fall into a particular value range.

  • Less than $50,000
    1,228
  • $50,000 to $99,999
    3,151
  • $100,000 to $149,999
    1,324
  • $150,000 to $199,999
    460
  • $200,000 to $299,999
    222
  • $300,000 to $499,999
    110
  • $500,000 to $999,999
    55
  • $1,000,000 or more
    0

Property Age

We can also look at the age of properties in Alton. The chart below shows the number of properties in Alton that fall into a particular age range.

  • 1939 or earlier
    3,693
  • 1940 to 1949
    2,243
  • 1950 to 1959
    2,744
  • 1960 to 1969
    1,236
  • 1970 to 1979
    1,153
  • 1980 to 1989
    706
  • 1990 to 1999
    431
  • 2000 to 2009
    578
  • 2010 to 2013
    52
  • 2014 or later
    0

Vehicles per Household

The number of vehicles available per household can be a good indicator of the level of affluence in an area. The chart below shows the number of households in Alton that have a particular number of vehicles available.

  • No vehicles available
    995
  • 1 vehicle available
    5,250
  • 2 vehicles available
    3,355
  • 3 or more vehicles available
    1,497

Commuting to Work

In this section, we can also look at how people in Alton get to work. The chart below shows the number of people in Alton that commute to work in a particular way.

24.1 minutes is the average travel time to work for people in Alton.

These commute times can be compared to other date like income and educational levels to see how they relate to each other and if there are any trends in the data that might suggest a correlation.

  • Less than 5 minutes
    271
  • 5 to 9 minutes
    1,593
  • 10 to 14 minutes
    2,006
  • 15 to 19 minutes
    1,343
  • 20 to 24 minutes
    860
  • 25 to 29 minutes
    659
  • 30 to 34 minutes
    1,075
  • 35 to 39 minutes
    389
  • 40 to 44 minutes
    509
  • 45 to 59 minutes
    1,136
  • 60 to 89 minutes
    317
  • 90 or more minutes
    227

Summary

We've covered a LOT of demographic and population data for Alton, Illinois in this article! Hopefully you have found it very useful in your research of the area.

If you use any of the data found on this page, please consider linking back to USPopulation.org as the source and if you have any feedback or data requests, click here to contact us.