Riddle Hill, Upper Southwest Illinois, IL demographics:
population, income, and more

Total population
293
1.4% year-over-year change
Median household income
$124,816/yr
1.1% year-over-year change
Housing units
126
1.6% year-over-year change

Riddle Hill population

How many people live in Riddle Hill

Riddle Hill is home to 293 residents, according to the most recent Census data. Gender-wise, 46.8% of Riddle Hill locals are male, and 53.2% are female.

Total population
293
1.4% year-over-year change
Gender ratio
Male
46.8%
137
Female
53.2%
156
Value Percent YoY change
Male 137 46.8% 2.2%
Female 156 53.2% 0.0%
A higher population often means more rental variety and livelier areas. The gender balance—how many men live here compared to women—can reveal a lot about the community and the lifestyles of its residents. Use this info to get a sense of the area's pace and personality.

Age demographics

The median age in Riddle Hill is 47, with the population distributed as follows: about 17.5% are children under 15, then 8.9% are in the 15 to 24 age group. Adults between 25 and 44 make up 21.6% of the population, while another 25% fall into the 45 to 64 bracket. Finally, around 27% are 65 or older.

Median age
47.4
Age breakdown
Under 15
17.5%
15 to 24
8.9%
25 to 44
21.6%
45 to 64
25%
Over 65
27%
Value Percent YoY change
Under 15 51 17.5% -7.3%
15 to 24 26 8.9% 18.2%
25 to 44 63 21.6% 1.6%
45 to 64 73 25% -5.2%
Over 65 79 27% 8.2%
The age composition helps you get insight into who lives in the area. A younger population might mean a more active, fast-paced vibe, while an older one could suggest a quieter, slower lifestyle. If there's a balanced makeup, you’re likely to find a variety of services, housing types, and community spaces that cater to different life stages.

Racial makeup

In Riddle Hill, 89.8% of the population are US-born citizens, while 6.1% have gained naturalized citizenship. At the same time, 4.1% of residents are non-citizens. As for race, 80.6% of locals are Caucasian, 7.5% are African American and 6.8% have Asian roots. There’s also a share of 3.4% that includes residents with two or more races.

Citizenship
U.S.-born citizens
89.8%
Non-U.S.-born citizens
6.1%
Non-citizens
4.1%
Value Percent YoY change
U.S.-born citizens 263 89.8% -1.5%
Non-U.S.-born citizens 18 6.1% 20.0%
Non-citizens 12 4.1% 50.0%
Racial breakdown
White
80.6%
Black or African American
7.5%
American Indian and Alaska Native
0%
Asian
6.8%
Native Hawaiian and other Pacific Islander
0%
Two or more races
3.4%
Other
1.7%
Value Percent
White 236 80.6%
Black or African American 22 7.5%
Asian 20 6.8%
Two or more races 10 3.4%
Other 5 1.7%

Households in Riddle Hill

A peek inside Riddle Hill households

Riddle Hill has 122 households, with an average of 2 members in each. Of these, 63.9% are families, while the remaining 36.1% are made up of individuals living alone or with non-relatives, such as roommates.

Households stats

Total households
122
2.5% year-over-year change
Average people per household
2
Non-family households
44
Family households
78
Value Percent YoY change
Non-family households 44 36.1% 10.0%
Family households 78 63.9% -1.3%
The mix between family and non-family households gives a glimpse into daily life. A higher percentage of families might mean more parks and schools, while more non-family setups can mean flexible housing and diverse living styles. For renters, this can signal what kinds of homes are common and can help you figure out if the area matches your lifestyle.

Housing in Riddle Hill

The housing landscape of Riddle Hill

Riddle Hill's housing consists of 126 units, with 64% being detached single-family homes ideal for those wanting space. Attached options, including duplexes and townhouses, make up 20% and offer a more compact, shared living style. Then there are the multifamily buildings in the area, and for those seeking flexibility, non-traditional options like mobile homes account for 0.8% of the housing landscape.

Housing units
126
1.6% year-over-year change
Housing types
Value Percent
1 unit, detached 80 64%
1 unit, attached 25 20%
2 units 2 1.6%
3 or 4 units 2 1.6%
5 to 9 units 1 0.8%
10 to 19 units 5 4%
20 to 49 units 1 0.8%
50 or more units 8 6.4%
Mobile home 1 0.8%
Homes built since 2020
3
200.0% year-over-year change

The age of buildings in Riddle Hill

In Riddle Hill, the median construction year is 1999. Most development happened in the second half of the 20th century. Then, 25.4% of homes were added from 2000 to 2009, 19.8% between 2010 and 2019, and 2.4% are part of the newest wave of development.

Construction year breakdown by decade
Value Percent YoY change
Built in 1939 or earlier 2 1.6% 0.0%
Built between 1950 and 1959 5 4% 0.0%
Built between 1960 and 1969 7 5.6% 16.7%
Built between 1970 and 1979 11 8.7% 0.0%
Built between 1980 and 1989 12 9.5% 0.0%
Built between 1990 and 1999 29 23% -9.4%
Built between 2000 and 2009 32 25.4% 0.0%
Built between 2010 and 2019 25 19.8% 4.2%
Built in 2020 or later 3 2.4% 200.0%
As a renter, knowing when homes were built helps you understand the potential condition and design of rental units. Newer builds may have more contemporary layouts, while older homes can offer character or larger lots, depending on the area.

Riddle Hill occupancy rates

Out of the 122 occupied housing units in Riddle Hill, 78.7% are owner-occupied, while 21.3% are lived in by tenants. Meanwhile, 3.2% of all homes on the local market sit vacant.

Occupied housing units
122
2.5% year-over-year change
Occupancy breakdown
Renter occupied
26
Owner occupied
96
Value Percent YoY
change
Renter occupied 26 21.3% 4.0%
Owner occupied 96 78.7% 1.1%
Unoccupied housing units
3.2%
Unoccupied housing units refer to homes that are currently without residents—whether they're waiting for renters or owners, used seasonally, or simply unclaimed. A higher share of empty homes may mean more housing availability, while a low number can reflect a tighter market with more competition. This, along with the renter-vs.-owner mix, helps paint a clearer picture of what types of housing and services are likely to be available in the area.

Riddle Hill housing costs

Housing costs in Riddle Hill come to a median of $1,588 per month, while tenants specifically pay a median gross rent of $1,337.

Median housing costs per month
$1,588/month
This figure sums up typical monthly housing costs for all households in the area. If you own, it includes mortgage payments in addition to property taxes, insurance and HOA fees. If you rent, it accounts for rent plus extras like utilities. It’s useful for seeing how local living expenses stack up compared to other places.
Median gross rent in Riddle Hill
$1,337/month
Gross rent gives a more complete look at what renters actually pay, including not just base rent, but also utilities and fees. It’s a key number for evaluating rental affordability in your area of interest and understanding how it compares to nearby locations.

Education in Riddle Hill

Riddle Hill education at a glance

About 16.9% of the population in Riddle Hill went to high school, while 16.9% pursued college studies. Another 7.8% earned an associate degree and 32% hold a bachelor’s. Meanwhile, 25.1% went even further, earning a master’s or doctorate.

Education level
Value Percent YoY change
No high school 3 1.3% 50.0%
High school diploma 39 16.9% -4.9%
College diploma 39 16.9% -2.5%
Associate degree 18 7.8% 12.5%
Bachelor's degree 74 32% 5.7%
Graduate degree 58 25.1% 3.6%
A community’s education mix can offer insights into the local economy and housing market. Higher levels of education often align with more job opportunities and stable incomes, which can increase demand for homes and influence both rent prices and rental availability.

Income in Riddle Hill

How much people earn in Riddle Hill

The average annual household income in Riddle Hill was $178,140 in 2024, the most recent annual data available, according to the U.S. Census Bureau. This marked a +9.6% change from the previous year. At the same time, the median income stood at $124,816, reflecting a +1.1% shift over the same period.

Average household income in Riddle Hill
$178,140/year
9.6% year-over-year change
Median household income in Riddle Hill
$124,816/year
1.1% year-over-year change

Riddle Hill income by age

In Riddle Hill, households led by residents aged 25 to 44 — usually in the early to mid stages of their careers — have a median income of $136,211. Those with someone between 45 and 64 in charge, often well established professionally, earn $174,500 overall. Overall, 96.8% of the locals in this community live above the poverty line.

Income breakdown by age
Value YoY change
25 - 44 $136,211 4.4%
45 - 64 $174,500 4.1%
Over 65 $92,727 0.2%
Above poverty level
277
Below poverty level
9
Value Percent YoY
change
Above poverty level 277 96.8% 1.1%
Below poverty level 9 3.2% 0.0%

Employment in Riddle Hill

Workforce and job types in Riddle Hill

90.1% of the working population are employed in professional or administrative positions, while 9.9% are in hands-on or service-based jobs. Also, 9.2% run their own businesses, 46.9% are employed by private companies, and 27.7% work in the public sector.

Workforce demographics

White collar
118
Blue collar
13
Value Percent YoY change
White collar 118 90.1% 0.0%
Blue collar 13 9.9% -13.3%
Employer type
Self employees
9.2%
Private companies
46.9%
Governmental workers
27.7%
Not for profit companies
16.2%
Value Percent YoY change
Self employees 12 9.2% -14.3%
Private companies 61 46.9% 3.4%
Governmental workers 36 27.7% -10.0%
Not for profit companies 21 16.2% 5.0%

Transportation in Riddle Hill

How people get around in Riddle Hill

Commuting methods vary: 98.2% of residents travel by personal vehicle and 0.9% prefer to walk, while the remaining share relies on public transit or on two wheelers to get from A to B.

Means of transportation
Value Percent YoY change
Car 106 98.2% -7.8%
Bus or trolleybus 1 0.9% N/A
Walk 1 0.9% 0.0%
Understanding how locals get to work can help you plan your own routine. High car usage might mean you’ll need a vehicle, while strong public transit or walkability could save you the hassle. Commute times also play a big role in quality of life—shorter trips can give you more time for the things you enjoy.

What is the median and average household income in Riddle Hill by zipcode?

Zipcode Population Number of households Median income Average income
62711 18,559 7,715 $124,816 $178,140

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FAQs about Riddle Hill demographics 

What is the total population of Riddle Hill?

Riddle Hill has a total population of 293 residents, according to the latest release from the U.S. Census Bureau: the 2019-2023 American Community Survey (ACS) 5-year estimates. This figure changed by +1.4% compared to a year ago.

What is the gender ratio in Riddle Hill?

The gender ratio in Riddle Hill is as follows:
  • 46.8% males (137 residents)
  • 53.2% females (156 residents)

What is the median age in Riddle Hill?

The median age in Riddle Hill is 47.4.

What is the age distribution of the population in Riddle Hill?

The age distribution in Riddle Hill is as follows:
  • Under 15: 17.5% (51 residents)
  • Ages 15-24: 8.9% (26 residents)
  • Ages 25-44: 21.6% (63 residents)
  • Ages 45-64: 25% (73 residents)
  • Over 65: 27% (79 residents)

What is the racial and ethnic makeup of Riddle Hill?

The racial and ethnic makeup of Riddle Hill is as follows:
  • White: 80.6% (236 residents)
  • Black or African American: 7.5% (22 residents)
  • American Indian and Alaska Native: 0% (0 residents)
  • Asian: 6.8% (20 residents)
  • Native Hawaiian and Other Pacific Islander: 0% (0 residents)
  • Two or More Races: 3.4% (10 residents)
  • Other: 1.7% (5 residents)

What percentage of the population in Riddle Hill are U.S.-born citizens?

U.S.-born citizens represent 89.8% of the population in Riddle Hill.

How many housing units are there in Riddle Hill?

There are 126 housing units in Riddle Hill, reflecting a +1.6% change compared to the previous year, according to the latest data from the U.S. Census Bureau.

How many households are in Riddle Hill and what is the average household size?

Riddle Hill has a total of 122 households, with an average of 2 people in each.

What is the median household income in Riddle Hill?

Riddle Hill has a median household income of $124,816, representing a +1.1% shift from the previous year, according to the U.S. Census Bureau.

What is the job market overview for Riddle Hill?

Here’s a detailed breakdown of the local job market:

Job types:
  • White-collar workers: 90.1% (118 residents)
  • Blue-collar workers: 9.9% (13 residents)

Places of employment:
  • Self-employed: 9.2% (12 residents)
  • Private companies: 46.9% (61 residents)
  • Governmental workers: 27.7% (36 residents)
  • Not-for-profit companies: 16.2% (21 residents)

Data source & methodology

The demographic data on this page was sourced from the latest U.S. Census Bureau release—the 2019–2023 American Community Survey (ACS) 5-year estimates.

The information, issued annually, is compiled and published by the Point2Homes Research Team as soon as new data becomes available.

No representation, guarantee, or warranty is made concerning the accuracy or completeness of modified or aggregated information for particular areas.

Page last updated: September 2025