Northwest Knox, West Illinois, IL demographics:
population, income, and more

Total population
1,044
-3.3% year-over-year change
Median household income
$82,486/yr
1.1% year-over-year change
Housing units
414
-8.2% year-over-year change

Northwest Knox population

How many people live in Northwest Knox

Northwest Knox is home to 1,044 residents, according to the most recent Census data. Gender-wise, 46.2% of Northwest Knox locals are male, and 53.8% are female.

Total population
1,044
-3.3% year-over-year change
Gender ratio
Male
46.2%
482
Female
53.8%
562
Value Percent YoY change
Male 482 46.2% -6.2%
Female 562 53.8% -0.7%
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 Northwest Knox is 43, with the population distributed as follows: about 22% are children under 15, then 15.2% are in the 15 to 24 age group. Adults between 25 and 44 make up 17.6% of the population, while another 27.9% fall into the 45 to 64 bracket. Finally, around 17.4% are 65 or older.

Median age
43
Age breakdown
Under 15
22%
15 to 24
15.2%
25 to 44
17.6%
45 to 64
27.9%
Over 65
17.4%
Value Percent YoY change
Under 15 229 22% -5.8%
15 to 24 159 15.2% -3.6%
25 to 44 183 17.6% -7.1%
45 to 64 291 27.9% -9.6%
Over 65 181 17.4% 16.8%
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 Northwest Knox, 98.3% of the population are US-born citizens, while 1.4% have gained naturalized citizenship. At the same time, 0.3% of residents are non-citizens. As for race, 93.3% of locals are Caucasian, 0.4% are African American and 0.7% have Asian roots. There’s also a share of 5.3% that includes residents with two or more races.

Citizenship
U.S.-born citizens
98.3%
Non-U.S.-born citizens
1.4%
Non-citizens
0.3%
Value Percent YoY change
U.S.-born citizens 1,026 98.3% -2.6%
Non-U.S.-born citizens 15 1.4% -37.5%
Non-citizens 3 0.3% 0.0%
Racial breakdown
White
93.3%
Black or African American
0.4%
American Indian and Alaska Native
0%
Asian
0.7%
Native Hawaiian and other Pacific Islander
0%
Two or more races
5.3%
Other
0.4%
Value Percent
White 975 93.3%
Black or African American 4 0.4%
Asian 7 0.7%
Two or more races 55 5.3%
Other 4 0.4%

Households in Northwest Knox

A peek inside Northwest Knox households

Northwest Knox has 376 households, with an average of 3 members in each. Of these, 79.5% are families, while the remaining 20.5% are made up of individuals living alone or with non-relatives, such as roommates.

Households stats

Total households
376
-6.7% year-over-year change
Average people per household
3
Non-family households
77
Family households
299
Value Percent YoY change
Non-family households 77 20.5% -34.2%
Family households 299 79.5% 4.5%
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 Northwest Knox

The housing landscape of Northwest Knox

Northwest Knox's housing consists of 414 units, with 94.7% being detached single-family homes ideal for those wanting space. Attached options, including duplexes and townhouses, make up 0.5% and offer a more compact, shared living style.

Housing units
414
-8.2% year-over-year change
Housing types
Value Percent
1 unit, detached 393 94.7%
1 unit, attached 2 0.5%
2 units 3 0.7%
3 or 4 units 17 4.1%
Homes built since 2020
9
12.5% year-over-year change

The age of buildings in Northwest Knox

In Northwest Knox, the median construction year is 1956. About 37% of homes were built before the 1940s, with another 4.4% going up by 1949. Most development happened in the second half of the 20th century.

Construction year breakdown by decade
Value Percent YoY change
Built in 1939 or earlier 153 37% -7.8%
Built between 1940 and 1949 18 4.4% 125.0%
Built between 1950 and 1959 29 7% -27.5%
Built between 1960 and 1969 29 7% 3.6%
Built between 1970 and 1979 92 22.2% -1.1%
Built between 1980 and 1989 21 5.1% -8.7%
Built between 1990 and 1999 44 10.6% -20.0%
Built between 2000 and 2009 19 4.6% -36.7%
Built in 2020 or later 9 2.2% 12.5%
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.

Northwest Knox occupancy rates

Out of the 376 occupied housing units in Northwest Knox, 87% are owner-occupied, while 12.8% are lived in by tenants. Meanwhile, 9.2% of all homes on the local market sit vacant.

Occupied housing units
376
-6.7% year-over-year change
Occupancy breakdown
Renter occupied
48
Owner occupied
327
Value Percent YoY
change
Renter occupied 48 12.8% -17.2%
Owner occupied 327 87% -5.2%
Unoccupied housing units
9.2%
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.

Northwest Knox housing costs

Housing costs in Northwest Knox come to a median of $878 per month, while tenants specifically pay a median gross rent of $802.

Median housing costs per month
$878/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 Northwest Knox
$802/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 Northwest Knox

Northwest Knox education at a glance

About 37.4% of the population in Northwest Knox went to high school, while 21.1% pursued college studies. Another 14.7% earned an associate degree and 17.6% hold a bachelor’s. Meanwhile, 8.4% went even further, earning a master’s or doctorate.

Education level
Value Percent YoY change
No high school 5 0.7% -37.5%
High school diploma 280 37.4% 0.7%
College diploma 158 21.1% 5.3%
Associate degree 110 14.7% 11.1%
Bachelor's degree 132 17.6% -17.5%
Graduate degree 63 8.4% -19.2%
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 Northwest Knox

How much people earn in Northwest Knox

The average annual household income in Northwest Knox was $92,696 in 2024, the most recent annual data available, according to the U.S. Census Bureau. This marked a +5.2% change from the previous year. At the same time, the median income stood at $82,486, reflecting a +1.1% shift over the same period.

Average household income in Northwest Knox
$92,696/year
5.2% year-over-year change
Median household income in Northwest Knox
$82,486/year
1.1% year-over-year change

Northwest Knox income by age

In Northwest Knox, households led by residents aged 25 to 44 — usually in the early to mid stages of their careers — have a median income of $69,535. Those with someone between 45 and 64 in charge, often well established professionally, earn $97,266 overall. Overall, 95.2% of the locals in this community live above the poverty line.

Income breakdown by age
Value YoY change
25 - 44 $69,535 2.5%
45 - 64 $97,266 8.1%
Over 65 $80,938 9.9%
Above poverty level
981
Below poverty level
50
Value Percent YoY
change
Above poverty level 981 95.2% -2.6%
Below poverty level 50 4.8% -19.4%

Employment in Northwest Knox

Workforce and job types in Northwest Knox

69.5% of the working population are employed in professional or administrative positions, while 30.5% are in hands-on or service-based jobs. Also, 9.3% run their own businesses, 70.4% are employed by private companies, and 12.9% work in the public sector.

Workforce demographics

White collar
307
Blue collar
135
Value Percent YoY change
White collar 307 69.5% -5.8%
Blue collar 135 30.5% -9.4%
Employer type
Self employees
9.3%
Private companies
70.4%
Governmental workers
12.9%
Not for profit companies
7.5%
Value Percent YoY change
Self employees 41 9.3% -2.4%
Private companies 311 70.4% -7.7%
Governmental workers 57 12.9% -16.2%
Not for profit companies 33 7.5% 22.2%

Transportation in Northwest Knox

How people get around in Northwest Knox

Commuting methods vary: 99.5% of residents travel by personal vehicle and 0.5% 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 415 99.5% -7.2%
Walk 2 0.5% 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.

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FAQs about Northwest Knox demographics 

What is the total population of Northwest Knox?

Northwest Knox has a total population of 1,044 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 -3.3% compared to a year ago.

What is the gender ratio in Northwest Knox?

The gender ratio in Northwest Knox is as follows:
  • 46.2% males (482 residents)
  • 53.8% females (562 residents)

What is the median age in Northwest Knox?

The median age in Northwest Knox is 43.

What is the age distribution of the population in Northwest Knox?

The age distribution in Northwest Knox is as follows:
  • Under 15: 22% (229 residents)
  • Ages 15-24: 15.2% (159 residents)
  • Ages 25-44: 17.6% (183 residents)
  • Ages 45-64: 27.9% (291 residents)
  • Over 65: 17.4% (181 residents)

What is the racial and ethnic makeup of Northwest Knox?

The racial and ethnic makeup of Northwest Knox is as follows:
  • White: 93.3% (975 residents)
  • Black or African American: 0.4% (4 residents)
  • American Indian and Alaska Native: 0% ( residents)
  • Asian: 0.7% (7 residents)
  • Native Hawaiian and Other Pacific Islander: 0% ( residents)
  • Two or More Races: 5.3% (55 residents)
  • Other: 0.4% (4 residents)

What percentage of the population in Northwest Knox are U.S.-born citizens?

U.S.-born citizens represent 98.3% of the population in Northwest Knox.

How many housing units are there in Northwest Knox?

There are 414 housing units in Northwest Knox, reflecting a -8.2% change compared to the previous year, according to the latest data from the U.S. Census Bureau.

How many households are in Northwest Knox and what is the average household size?

Northwest Knox has a total of 376 households, with an average of 3 people in each.

What is the median household income in Northwest Knox?

Northwest Knox has a median household income of $82,486, representing a +1.1% shift from the previous year, according to the U.S. Census Bureau.

What is the job market overview for Northwest Knox?

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

Job types:
  • White-collar workers: 69.5% (307 residents)
  • Blue-collar workers: 30.5% (135 residents)

Places of employment:
  • Self-employed: 9.3% (41 residents)
  • Private companies: 70.4% (311 residents)
  • Governmental workers: 12.9% (57 residents)
  • Not-for-profit companies: 7.5% (33 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