US ZIP Code
61856

Monticello, IL

Piatt County  ·  Illinois

● Active
👥 8,110 Population ↑ 4% since 2019
💰 $94,841 Median HH Income
▲ 24% above avg ↑ 22% since 2019
🎂 42.4 Median Age
🏠 $214,500 Median Home Value
▼ 23% below avg ↑ 21% since 2019
🎓 51.9% College Grads
▲ 34% above avg
📊 2.0% Unemployment
▼ 60% below avg ↓ 39% since 2019
ZIP Code Details
ZIP Code61856
CityMonticello
StateIllinois (IL)
CountyPiatt County
Area Code217/447
Elevation649 ft
Latitude40.029305
Longitude-88.583656
TimezoneChicago (DST)
FIPS17147
ZIP TypeStandard
StatusActive
People & Population (ACS 2023)
♂ Male 51.3% (4,162) Female 48.7% (3,948) ♀

Race & Ethnicity

White: 95.2%Hispanic: 1.5%Black: 2.6%Asian: 0.3%Other: 0.5%Race
White95.2%
Hispanic1.5%
Black2.6%
Asian0.3%
Other0.5%

Age Breakdown

Under 5
5%
5–17
17%
18–24
4%
25–44
26%
45–64
25%
65+
11%

Key Indicators

Median Age42.4 yrs
Avg Household Size2.41
Below Poverty4.9% ▼ 51% below avg
College Grads51.9% ▲ 34% above avg
Unemployment2.0% ▼ 60% below avg
No HS Diploma9 (0.2%)
HS Graduate1,431 (25.2%)
Some College567 (10%)
Associates724 (12.7%)
Bachelors722 (12.7%)
Graduate Degree2,226 (39.2%)

Education

No HS: 0.2%HS Grad: 25.2%Some College: 10%Associates: 12.7%Bachelors: 12.7%Graduate: 39.2%Edu
No HS0.2%
HS Grad25.2%
Some College10.0%
Associates12.7%
Bachelors12.7%
Graduate39.2%
Housing & Income

Housing Tenure

Owner: 86.3%Renter: 13.7%Tenure
Owner86.3%
Renter13.7%

Home Value Distribution

Under $50k
3%
$50k–100k
2%
$100k–150k
12%
$150k–200k
27%
$200k–300k
29%
$300k–500k
24%
Over $500k
3%

Financials

Median HH Income$94,841 ▲ 24% above avg ↑ 22% since 2019
Median Home Value$214,500 ▼ 23% below avg ↑ 21% since 2019
Home/Income Ratio2.3x (nat avg ~3.5x)
Median Rent$1,045/mo ↑ 8% since 2019
Total Units3,492
Vacant Units163
Avg HH Size2.41

Income Distribution

Under $25k
11%
$25k–50k
6%
$50k–75k
18%
$75k–100k
16%
$100k–150k
25%
$150k–200k
12%
Over $200k
10%
Employment & Commute

How People Get to Work

Drove Alone
92%
Public Transit
0%
Walked
0%
Work From Home
7%

Commute Time

Under 15 min
31%
15–30 min
28%
30–45 min
36%
Over 45 min
5%
Housing Stock

Year Built

Before 1940
2%
1940s–1950s
13%
1960s–1970s
13%
1980s–1990s
16%
2000+
57%

Summary

Total Units3,492
Vacant163
Owner Occupied86.3%
Renter Occupied13.7%
Avg HH Size2.41
Frequently Asked Questions
ZIP code 61856 is in Monticello, IL, in Piatt County.
ZIP code 61856 is located in Illinois (IL).
ZIP code 61856 is in Piatt County, IL.
ZIP 61856 observes the Chicago timezone. Daylight Saving Time is observed.
The estimated population of ZIP code 61856 is 8,110 people (ACS 2023).
The median household income in ZIP code 61856 is $94,841 (ACS 2023).
The median home value in ZIP 61856 is $214,500 (ACS 2023).
About ZIP Code 61856

ZIP code 61856 is located in Monticello, Illinois, within Piatt County. With a population of 8,110, this is a lightly populated ZIP code with a middle-aged community — the median age is 42.4 years. Economically, 61856 is a middle-income ZIP code: the median household income of $94,841 is above the national average.

Real estate in ZIP code 61856 represents an affordable housing market. The median home value of $214,500 is below the national average. Renters can expect to pay around $1,045 per month in median rent. Homeownership is strong here — 86.3% of occupied units are owner-occupied, suggesting an established, stable residential community. Median home values have increased by 21% since 2019.

The population of 61856 is primarily White (95.15%). Residents are well-educated — 51.9% hold a bachelor's degree or higher, which is above the national average. Poverty affects a relatively small share of residents at 4.9%. Household income has grown by 22% since 2019.

The unemployment rate in 61856 stands at 2.0%, which is well below the national average. As in most parts of the country, driving alone is the dominant commute mode at 91%.

Overall, ZIP code 61856 in Monticello, IL is characterized as middle-income, well-educated, a middle-aged community, and predominantly owner-occupied. With 8,110 residents, a median household income of $94,841, and a median home value of $214,500, it offers a clear picture of life in this part of Illinois.