County ProfileIL
Sangamon County
Population: 196,343 · 53 ZIP codes
Demographics
Source: U.S. Census Bureau (ACS/Decennial). Estimates vary by year.
People
Total population
196,343
People
Median age
41
Housing
Total households
84,762
Income
Median household income
$75,357
Housing
Total housing units
93,382
Employment
Employment rate
57.6%
Education
Bachelor’s degree or higher
36.6%
Healthcare
Insured population
96.4%
County details
Local time 01:07:02(CT)| Name | Sangamon |
|---|---|
| Total ZIP codes | 53total |
| ZIP codes (by type) | 24 Standard5 PO Box24 Unique |
| Area code | 217, 447 |
| Timezone | Central Time (CT) |
| Coordinates | 39.7568863, -89.662435 |
| Land area | 868.2 sq miles(2,248.7 km²) |
Map of Sangamon county, Illinois with ZIP codes
Cities and Communities in Sangamon County
Compare the largest cities in Sangamon 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 |
|---|---|---|---|
| Springfield | 114,394 | $66,064 | 35ZIPs |
| Chatham | 14,377 | $106,773 | 1ZIPs |
| Sherman | 4,673 | $148,906 | 1ZIPs |
| Auburn | 4,574 | $81,411 | 1ZIPs |
| Rochester | 3,863 | $117,118 | 1ZIPs |
| Riverton | 3,532 | $80,920 | 1ZIPs |
| Pawnee | 2,678 | $81,103 | 1ZIPs |
| Williamsville | 1,425 | $106,731 | 1ZIPs |
| New Berlin | 1,381 | $70,179 | 1ZIPs |
| Divernon | 1,139 | $71,750 | 1ZIPs |
| Glenarm | 886 | — | 1ZIPs |
| Illiopolis | 846 | $63,125 | 1ZIPs |
| Loami | 812 | $57,813 | 1ZIPs |
| Pleasant Plains | 808 | $89,643 | 1ZIPs |
| Mechanicsburg | 662 | $93,125 | 1ZIPs |
| Thayer | 632 | $62,083 | 1ZIPs |
| Dawson | 519 | $76,339 | 1ZIPs |
| Buffalo | 447 | $56,250 | 1ZIPs |
| Cantrall | 144 | $87,500 | 1ZIPs |
— Data unavailable or suppressed by the U.S. Census Bureau for areas with small sample sizes to protect individual privacy.
ZIP Codes in Sangamon County
Review the most populated postal areas across Sangamon County. Use the ranking below to compare resident density and demographic scales between the county's major zones.
| ZIP | City | Median incomeHousehold | Population (ZIP) |
|---|---|---|---|
| 62704 | Springfield | $69,976 | 39,157 |
| 62702 | Springfield | $51,136 | 33,712 |
| 62703 | Springfield | $45,009 | 28,344 |
| 62711 | Springfield | $124,816 | 18,115 |
| 62629 | Chatham | $107,250 | 15,255 |
| 62712 | Springfield | $110,179 | 10,321 |
| 62707 | Springfield | $89,926 | 7,290 |
| 62563 | Rochester | $117,255 | 6,062 |
| 62684 | Sherman | $139,196 | 5,469 |
| 62615 | Auburn | $84,632 | 5,424 |
| 62561 | Riverton | $81,646 | 5,229 |
| 62558 | Pawnee | $81,106 | 3,503 |
| 62670 | New Berlin | $78,750 | 3,162 |
| 62677 | Pleasant Plains | $102,917 | 2,571 |
| 62693 | Williamsville | $121,429 | 1,733 |
| 62520 | Dawson | $84,500 | 1,505 |
| 62530 | Divernon | $82,188 | 1,458 |
| 62701 | Springfield | $32,195 | 1,354 |
| 62661 | Loami | $80,833 | 1,280 |
| 62539 | Illiopolis | $82,750 | 1,264 |
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