County

Knox County, IL

17 ZIP codes  ·  16 cities  ·  Illinois

👥49,464Population
💰$55,781Median HH Income▼ 27% below avg
🎂42.6Median Age
🏠$106,998Median Home Value▼ 62% below avg
🎓35.3%College Grads▼ 9% below avg
📊4.4%Unemployment▼ 10% below avg
People & Population (ACS 2023 — weighted avg)
♂ Male 51.0% Female 49.0% ♀

Race & Ethnicity

White: 80.9%Hispanic: 6.3%Black: 8.3%Asian: 1.1%Other: 3.9%Race
White80.9%
Hispanic6.3%
Black8.3%
Asian1.1%
Other3.9%

Age Breakdown

Under 5
5%
5–17
15%
18–24
10%
25–44
23%
45–64
25%
65+
10%

Key Indicators

Median Age42.6 yrs
Avg HH Size-1.18
Below Poverty14.5% ▲ 45% above avg
College Grads35.3% ▼ 9% below avg
Unemployment4.4% ▼ 10% below avg
No HS Diploma422 (1.3%)
HS Graduate10,073 (31.9%)
Some College5,782 (18.3%)
Associates4,118 (13%)
Bachelors4,489 (14.2%)
Graduate Degree6,728 (21.3%)

Education

No HS: 1.3%HS Grad: 31.9%Some College: 18.3%Associates: 13%Bachelors: 14.2%Graduate: 21.3%Edu
No HS1.3%
HS Grad31.9%
Some College18.3%
Associates13.0%
Bachelors14.2%
Graduate21.3%
Housing & Income

Housing Tenure

Owner: 70%Renter: 30%Tenure
Owner70.0%
Renter30.0%

Home Value Distribution

Under $50k
13%
$50k–$100k
35%
$100k–$150k
21%
$150k–$200k
14%
$200k–$300k
9%
$300k–$500k
6%
Over $500k
2%

Financials

Median HH Income$55,781 ▼ 27% below avg
Median Home Value$106,997 ▼ 62% below avg
Home/Income Ratio1.9x (nat avg ~3.5x)
Median Rent$721/mo
Total Housing Units23,765
Vacant Units2,946

Income Distribution

Under $25k
27%
$25k–$50k
18%
$50k–$75k
18%
$75k–$100k
14%
$100k–$150k
15%
$150k–$200k
6%
Over $200k
3%
Employment & Commute

How People Get to Work

Drove Alone
89%
Public Transit
1%
Walked
4%
Work From Home
6%

Commute Time

Under 15 min
48%
15–30 min
30%
30–45 min
10%
Over 45 min
12%
Housing Stock

Year Built

Before 1940
4%
1940s–1950s
14%
1960s–1970s
14%
1980s–1990s
5%
2000+
63%
About Knox County, IL

Knox County is located in Illinois and encompasses 17 ZIP codes spanning 16 cities and communities. The county has an estimated population of 49,464 residents. With a median age of 42.64, it is a middle-aged county.

Knox County has a solidly middle-class economic profile. The median household income of $55,780 is below the national average. Unemployment stands at 4.4%, near the national average. The poverty rate of 14.5% is above the national average.

Housing in Knox County is one of the more affordable housing markets in the country, with a median home value of $106,997 — well below the national average. Monthly median rent is approximately $721. Homeownership rates are high at 70.0%, reflecting a largely residential, stable population.

The residents of Knox County are primarily White (80.93%). Educational attainment is moderately educated — 35.3% of adults hold a bachelor's degree or higher, near the national average.

Knox County, IL is a solidly middle-class area in Illinois. The 17 ZIP codes within the county each have their own character — browse the full list below to find the right community, whether you're looking for affordable housing, strong schools, or economic opportunity.

ZIP Codes in Knox County
ZIPCityPopulationMedian IncomeMedian HomeMedian RentUnemp.College
61410 Abingdon 3,763 $57,307 $93,000 $735 6.8% 28.0%
61414 Altona 731 $62,617 $122,200 $944 14.9% 44.4%
61428 Dahinda 1,153 $81,875 $250,000 $630 1.9% 35.9%
61430 East Galesburg 676 $65,750 $106,000 $791 2.5% 42.1%
61401 Galesburg 30,684 $47,728 $94,900 $724 4.6% 35.7%
61436 Gilson 810 $74,688 $186,500 0.0% 48.1%
61439 Henderson 268 $56,429 $97,500 $625 8.5% 46.3%
61448 Knoxville 3,906 $79,500 $139,700 $656 3.7% 40.0%
61458 Maquon 632 $62,604 $88,600 1.5% 30.9%
61467 Oneida 1,262 $82,917 $132,700 $850 7.3% 51.6%
61472 Rio 430 $80,192 $149,400 $771 5.3% 42.3%
61474 Saint Augustine 238 $57,353 $78,100 3.6% 41.2%
61485 Victoria 388 $62,188 $100,600 $786 5.0% 29.5%
61488 Wataga 1,230 $61,786 $125,000 $634 3.1% 39.7%
61489 Williamsfield 743 $83,625 $131,300 $644 2.5% 34.7%
61572 Yates City 916 $68,229 $95,100 $725 0.0% 27.1%