ZIP Code 61856
standardSource:
Monticello · Piatt County · Illinois
- Population
- 7,433
- Median income
- $103,559
- Median home value
- $230,900
- Bachelor's or higher
- 42.6%
- Land area
- 270.3 sq mi
28/sq mi
▲ 36% vs US
higher than 83% of US ZIPs
▼ 17% vs US
higher than 52% of US ZIPs
Median age 42.9
Chicago
ZIP code 61856 in Monticello, Illinois has a population of 7,433. The median household income is $103,559, which is 36% above the national average. Median home value is $230,900, 17% below the US average. 42.6% of residents hold a bachelor's degree or higher.
ZIP code 61856 is classified by USPS as a standard delivery area and covers roughly 270.3 square miles in Monticello, Piatt County, Illinois. The area is home to 7,433 residents, producing a population density of 28 people per square mile, and falls within the Chicago time zone. These USPS and Census boundary values drive every downstream statistic on this page, including the benchmarks that compare 61856 against Illinois and the nation.
On the economic side, the median household income for ZIP 61856 sits at $103,559 (29% above the Illinois average), while per-capita income is $51,286. The poverty rate stands at 4.5% and the unemployment rate at 0.7%. On housing, the median home value is $230,900 (20% above the state average) with median rent at $1,398 per month, and 85.7% of occupied units are owner-occupied, a direct signal of whether 61856 behaves more like a homeowner neighborhood or a renter-heavy ZIP.
Education and household profile round out the picture: 42.6% of adults hold a bachelor's degree or higher, the median age is 42.9, and the average commute is 23 minutes. We also surface 7 nearby ZIP codes within roughly 10 miles and 6 additional ZIPs sharing Piatt County, so you can benchmark 61856 against its immediate geography rather than a national average alone. Every figure is sourced from the U.S. Census Bureau American Community Survey 5-Year Estimates, HUD Fair Market Rents, and FHFA Home Price Index data, no estimates, no proprietary scoring. Verify with HUD →
Top industries in ZIP 61856
Top 5 sectors by establishment count
Which industries have the most business establishments in ZIP 61856.
- Retail trade
Retail trade
29 establishments
- Construction
Construction
25 establishments
- Other services (except public administration)
Other services (except public administration)
21 establishments
- Professional, scientific, and technical services
Professional, scientific, and technical services
19 establishments
- Accommodation and food services
Accommodation and food services
18 establishments
What this shows Establishment counts come from the Census ZIP Code Business Patterns program, which counts physical business locations rather than employees or revenue.
Source: U.S. Census Bureau, American Community Survey 5-Year Estimates + ZIP Code Business Patterns + HUD FMR + FHFA HPI ACS demographics, ZBP business establishments, HUD Fair Market Rents, FHFA HPI for ZIP 61856, Monticello, IL · 2023 Census ACS 5-Year Estimates use a rolling 60-month sample for stable small-geography estimates; ZBP updated annually; HUD FMR + FHFA HPI updated quarterly/annually.
Quick Facts
7,433
Population
270.3
Area (sq mi)
28
People / sq mi
Chicago
Time Zone
standard
ZIP Type
Who lives in ZIP 61856?
42.9
Median Age
51.0%
Male
49.0%
Female
2.2%
Foreign-Born
Hispanic or Latino is an ethnicity category from the Census Bureau and may overlap with other categories above.
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
How much do residents earn?
$103,559
Median Household Income
+29% vs state
$51,286
Per Capita Income
4.5%
Poverty Rate
0.7%
Unemployment Rate
22.9 min
Mean Commute Time
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
What is the education profile here?
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
What does housing look like?
3,546
Total Housing Units
3,400
Occupied Units
146
Vacant Units
2.38
Avg Household Size
Occupancy Type
$230,900
Median Home Value
+20% vs state
$1,398
Median Rent
1980
Median Year Built
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
How have home values changed over time?
FHFA House Price Index, annual appreciation data based on repeat sales and appraisals
+8.7%
YoY Change (2024)
192
HPI Index (2000 = 100)
+92%
Total Change Since 2000
Home values in ZIP 61856 have increased 8.7% over the past year (2024). Since 2000, this ZIP has seen +92% cumulative appreciation.
| Year | Annual Change | HPI Index |
|---|---|---|
| 2020 | +2.0% | 138 |
| 2021 | +6.6% | 147 |
| 2022 | +14.7% | 168 |
| 2023 | +5.2% | 177 |
| 2024 | +8.7% | 192 |
Source: Federal Housing Finance Agency (FHFA) House Price Index, All-Transactions, Five-Digit ZIP Codes (Developmental Index). Index base = 100 in year 2000. Data through 2024. ZIP codes with few transactions may show missing values.
What businesses operate in this ZIP?
Census Bureau data shows 191 business establishments in ZIP 61856, employing approximately 1,607 people with a combined annual payroll of $74,537,000.
191
Businesses
1,607
Employees
$74.5M
Annual Payroll
14
Industry Sectors
| Industry | Establishments | % of Total |
|---|---|---|
| Retail trade | 29 | 15.2% |
| Construction | 25 | 13.1% |
| Other services (except public administration) | 21 | 11.0% |
| Professional, scientific, and technical services | 19 | 9.9% |
| Accommodation and food services | 18 | 9.4% |
| Health care and social assistance | 16 | 8.4% |
| Finance and insurance | 13 | 6.8% |
| Manufacturing | 12 | 6.3% |
| Wholesale trade | 9 | 4.7% |
| Real estate and rental and leasing | 7 | 3.7% |
| Transportation and warehousing | 6 | 3.1% |
| Administrative and support and waste management and remediation services | 6 | 3.1% |
| Arts, entertainment, and recreation | 4 | 2.1% |
| Educational services | 3 | 1.6% |
Source: U.S. Census Bureau, ZIP Code Business Patterns (ZBP), 2023. Employment figures may include noise for disclosure avoidance.
Nearby ZIP Codes
Want a side-by-side? Compare 61856 vs 61813 →
More ZIP Codes in Piatt County
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Frequently Asked Questions
What county is ZIP code 61856 in? ▼
What is the population of ZIP code 61856? ▼
What is the median household income in ZIP 61856? ▼
What is the average home value in ZIP 61856? ▼
What is the demographic makeup of ZIP 61856? ▼
How many businesses are in ZIP code 61856? ▼
What are the main industries in ZIP code 61856? ▼
How have home values changed in ZIP code 61856? ▼
What is the education level in ZIP code 61856? ▼
What is the average commute time in ZIP 61856? ▼
What percentage of residents own vs. rent in ZIP 61856? ▼
What is the poverty rate in ZIP code 61856? ▼
ZIP Code Research Guides
Official Data Resources for Monticello, IL
Verify and explore additional data for this area using these official government sources.
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023). Business data: Source: Census ZIP Code Business Patterns (ZBP) 2023. Home value trends: Source: FHFA House Price Index (HPI), Five-Digit ZIP Codes.
PlainZIP is not affiliated with the U.S. Census Bureau or any government agency.
Read our methodology , how this data is sourced, computed, and verified.