County ProfileIL
Hancock County
Population: 17,620 · 15 ZIP codes
Demographics
Source: U.S. Census Bureau (ACS/Decennial). Estimates vary by year.
People
Total population
17,620
People
Median age
46.9
Housing
Total households
7,613
Income
Median household income
$65,865
Housing
Total housing units
8,938
Employment
Employment rate
56.2%
Education
Bachelor’s degree or higher
25.1%
Healthcare
Insured population
94.3%
County details
Local time 01:47:02(CT)| Name | Hancock |
|---|---|
| Total ZIP codes | 15total |
| ZIP codes (by type) | 13 Standard2 PO Box |
| Area code | 217, 309, 447, 861 |
| Timezone | Central Time (CT) |
| Coordinates | 40.401318, -91.1688008 |
| Land area | 793.7 sq miles(2,055.8 km²) |
Map of Hancock county, Illinois with ZIP codes
Cities and Communities in Hancock County
Compare the largest cities in Hancock County by population, median income, and growth. Use the table below to analyze key demographic shifts across the region.
| City | Population | Median incomeHousehold | ZIP codes |
|---|---|---|---|
| Hamilton | 2,753 | $56,895 | 1ZIPs |
| Carthage | 2,490 | $77,004 | 1ZIPs |
| Warsaw | 1,510 | $58,750 | 1ZIPs |
| La Harpe | 1,175 | $49,205 | 1ZIPs |
| Nauvoo | 950 | $68,750 | 1ZIPs |
| Dallas City | 805 | $63,056 | 1ZIPs |
| Augusta | 553 | $42,861 | 1ZIPs |
| Bowen | 464 | $63,750 | 1ZIPs |
| Plymouth | 436 | $41,071 | 1ZIPs |
| Sutter | 305 | — | 1ZIPs |
| Elvaston | 147 | $38,750 | 1ZIPs |
| West Point | 140 | $64,375 | 1ZIPs |
| Ferris | 127 | $43,125 | 1ZIPs |
| Niota | 114 | — | 1ZIPs |
| Basco | 80 | $40,000 | 1ZIPs |
— Data unavailable or suppressed by the U.S. Census Bureau for areas with small sample sizes to protect individual privacy.
ZIP Codes in Hancock County
Review the most populated postal areas across Hancock County. Use the ranking below to compare resident density and demographic scales between the county's major zones.
| ZIP | City | Median incomeHousehold | Population (ZIP) |
|---|---|---|---|
| 62321 | Carthage | $76,825 | 3,873 |
| 62341 | Hamilton | $62,262 | 3,369 |
| 62379 | Warsaw | $62,200 | 1,894 |
| 62330 | Dallas City | $61,042 | 1,600 |
| 61450 | La Harpe | $59,688 | 1,576 |
| 62354 | Nauvoo | $72,788 | 1,475 |
| 62367 | Plymouth | $58,000 | 1,165 |
| 62311 | Augusta | $47,794 | 754 |
| 62358 | Niota | $62,216 | 699 |
| 62316 | Bowen | $61,094 | 664 |
| 62313 | Basco | $108,646 | 387 |
| 62380 | West Point | $75,000 | 319 |
| 62373 | Sutter | $110,568 | 305 |
| 62334 | Elvaston | $38,750 | 147 |
| 62336 | Ferris | $43,125 | 82 |
Data Sources & Citations
The geographic and demographic information presented on this site is compiled from publicly available, authoritative sources, including:
- United States Census BureauDemographic, population, housing, and socioeconomic data sourced from Census Bureau datasets, including the Decennial Census and the American Community Survey (ACS).Census Data
- United States Postal Service (USPS)ZIP code classifications, delivery types, and postal designations used for reference purposes. USPS ZIP codes are intended for mail delivery and may not always align exactly with Census geographic boundaries.USPS