County ZIP codes · Illinois · FIPS 17167
Sangamon County, IL ZIP Codes
Sangamon County, Illinois has 58 ZIP codes (Census 2020 ZCTA-county file; GeoNames postal codes, October 2026): 30 residential and 28 for PO boxes or a single organization. 26 of the residential ones lie mainly in Sangamon County and 4 mainly in a neighboring county; 11 cross the county line. Median household income ranges from $32,195 in 62701 (Springfield) to $139,196 in 62684 (Sherman) (Census Bureau, ACS 2020-2024).
- ACS2020-24
- Census2020
Where are the ZIP codes of Sangamon County?
Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries; ACS 2020-2024 5-year estimates (B19013).
How different are its ZIP codes?
The middle half of its ranked ZIP codes (1,000+ people living in households) report median household incomes between $73,312 and $102,917.
They carry 23 postal town names.
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B19013).
All 30 residential ZIP codes in Sangamon County
26 ZIP codes lie mainly in Sangamon County; 4 more reach into it from a neighboring county and follow the first table.
| In this county | ||||||
|---|---|---|---|---|---|---|
| 62704 | Springfield | 40,046 | 3,275 | $70k | $173k | 100% |
| 62702 | Springfield | 31,033 | 2,020 | $51k | $104k | 100% |
| 62703 | Springfield | 28,922 | 1,939 | $45k | $97k | 100% |
| 62711 | Springfield | 18,559 | 600 | $125k | $317k | 100% |
| 62629 | Chatham | 15,413 | 442 | $107k | $244k | 100% |
| 62712 | Springfield | 10,045 | 421 | $110k | $256k | 100% |
| 62707 | Springfield | 7,472 | 179 | $90k | $175k | 100% |
| 62563 | Rochester | 5,766 | 97 | $117k | $263k | 96% |
| 62684 | Sherman | 5,760 | 222 | $139k | $305k | 100% |
| 62615 | Auburn | 5,198 | 105 | $85k | $165k | 100% |
| 62561 | Riverton | 4,842 | 209 | $82k | $166k | 100% |
| 62558 | Pawnee | 3,639 | 39 | $81k | $173k | 53% |
| 62670 | New Berlin | 2,682 | 29 | $79k | $212k | 92% |
| 62677 | Pleasant Plains | 2,149 | 24 | $103k | $213k | 98% |
| 62693 | Williamsville | 1,677 | 33 | $121k | $198k | 61% |
| 62520 | Dawson | 1,652 | 64 | $85k | $226k | 100% |
| 62530 | Divernon | 1,558 | 59 | $82k | $160k | 100% |
| 62539 | Illiopolis | 1,412 | 30 | $83k | $123k | 77% |
| 62661 | Loami | 1,212 | 32 | $81k | $180k | 100% |
| 62701 | Springfield | 1,205 | 3,098 | $32k | – | 100% |
| 62545 | Mechanicsburg | 1,101 | 41 | $85k | $179k | 65% |
| 62536 | Glenarm | 1,049 | 137 | $96k | $260k | 100% |
| 62625 | Cantrall | 1,003 | 51 | $168k | $228k | 100% |
| 62515 | Buffalo | 902 | 16 | $62k | $144k | 100% |
| 62689 | Thayer | 542 | 473 | $62k | $92k | 100% |
| 62706 | Springfield | no residents | 0 | – | – | 100% |
Partly in Sangamon County
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates; county shares by land area (Census 2020 ZCTA-county relationship file).
Which ZIP codes cross the county line?
11 ZIP codes of Sangamon County extend into another county. A ZIP code follows mail routes, not county borders.
| ZIP | In Sangamon | Elsewhere |
|---|---|---|
| 62563 | 96% | Christian County 4% |
| 62690 | 16% | Macoupin County 63%; Montgomery County 21% |
| 62558 | 53% | Christian County 38%; Montgomery County 9% |
| 62613 | 7% | Menard County 85%; Logan County 7% |
| 62670 | 92% | Morgan County 8% |
| 62677 | 98% | Menard County 2% |
| 62548 | 1% | Logan County 99% |
| 62692 | 48% | Morgan County 52% |
| 62693 | 61% | Logan County 37%; Menard County 3% |
| 62539 | 77% | Macon County 23% |
| 62545 | 65% | Christian County 35% |
Source: U.S. Census Bureau, 2020 ZCTA-county relationship file (shares of land area).
PO Box and single-organization ZIP codes
| ZIP | Postal name |
|---|---|
| 62662 | Lowder |
| 62705 | Springfield |
| 62708 | Springfield |
| 62715 | Springfield |
| 62716 | Springfield |
| 62719 | Springfield |
| 62722 | Springfield |
| 62723 | Springfield |
| 62726 | Springfield |
| 62736 | Springfield |
| 62739 | Springfield |
| 62756 | Springfield |
| 62757 | Springfield |
| 62761 | Springfield |
| 62762 | Springfield |
| 62763 | Springfield |
| 62764 | Springfield |
| 62765 | Springfield |
| 62766 | Springfield |
| 62767 | Springfield |
| 62769 | Springfield |
| 62776 | Springfield |
| 62777 | Springfield |
| 62781 | Springfield |
| 62786 | Springfield |
| 62791 | Springfield |
| 62794 | Springfield |
| 62796 | Springfield |
Source: GeoNames postal codes (CC BY 4.0).
Which first three digits do Sangamon County's ZIP codes use?
The first three digits of a ZIP code name the sectional center, the mail processing plant that sorts it. Sangamon County's ZIP codes use 3 prefixes: 625, 626 and 627.
| Prefix | Sectional center | Here | All codes |
|---|---|---|---|
| 625 | Springfield, IL (SCF 625) | 10 | 53 |
| 626 | Springfield, IL (SCF 625) | 13 | 62 |
| 627 | Springfield, IL (SCF 625) | 35 | 35 |
Source: U.S. Postal Service, labeling list L005 (3-digit ZIP Code prefix groups, SCF sortation), effective October 1, 2026.