County ZIP codes · Illinois · FIPS 17123
Marshall County, IL ZIP Codes
Marshall County, Illinois has 19 ZIP codes (Census 2020 ZCTA-county file; GeoNames postal codes, October 2026), all residential. 8 of the residential ones lie mainly in Marshall County and 11 mainly in a neighboring county; 14 cross the county line. Median household income ranges from $62,500 in 61491 (Wyoming) to $79,453 in 61523 (Chillicothe) (Census Bureau, ACS 2020-2024).
- ACS2020-24
- Census2020
Where are the ZIP codes of Marshall 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 $67,404 and $77,578.
They carry 19 postal town names.
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B19013).
All 19 residential ZIP codes in Marshall County
8 ZIP codes lie mainly in Marshall County; 11 more reach into it from a neighboring county and follow the first table.
| In this county | ||||||
|---|---|---|---|---|---|---|
| 61540 | Lacon | 2,753 | 52 | $79k | $154k | 100% |
| 61537 | Henry | 2,743 | 48 | $67k | $118k | 95% |
| 61369 | Toluca | 1,594 | 37 | $69k | $120k | 100% |
| 61565 | Sparland | 1,262 | 19 | $78k | $157k | 99% |
| 61375 | Varna | 989 | 20 | $81k | $165k | 100% |
| 61541 | La Rose | 97 | 591 | $42k | $73k | 100% |
| 61479 | Speer | 95 | 8 | $135k | $205k | 51% |
| 61424 | Camp Grove | 20 | 28 | – | – | 100% |
Partly in Marshall County
| In this county | ||||||
|---|---|---|---|---|---|---|
| 61377 | Wenona | 1,441 | 28 | $57k | $140k | 50% |
| 61358 | Rutland | 407 | 17 | $88k | $192k | 46% |
| 61570 | Washburn | 1,503 | 22 | $72k | $126k | 44% |
| 61336 | Magnolia | 694 | 19 | $92k | $174k | 44% |
| 61491 | Wyoming | 2,230 | 23 | $63k | $120k | 11% |
| 61421 | Bradford | 1,231 | 12 | $66k | $91k | 9% |
| 61526 | Edelstein | 1,105 | 36 | $118k | $262k | 8% |
| 61760 | Minonk | 2,226 | 32 | $75k | $121k | 8% |
| 61523 | Chillicothe | 10,203 | 192 | $80k | $162k | 6% |
| 61560 | Putnam | 477 | 14 | $73k | $222k | 4% |
| 61321 | Dana | 224 | 8 | $80k | $92k | 3% |
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?
14 ZIP codes of Marshall County extend into another county. A ZIP code follows mail routes, not county borders.
| ZIP | In Marshall | Elsewhere |
|---|---|---|
| 61523 | 6% | Peoria County 94% |
| 61537 | 95% | Bureau County 5% |
| 61491 | 11% | Stark County 89% |
| 61760 | 8% | Woodford County 92% |
| 61570 | 44% | Woodford County 56% |
| 61377 | 50% | LaSalle County 50% |
| 61565 | 99% | Peoria County 1% |
| 61421 | 9% | Stark County 55%; Bureau County 36% |
| 61526 | 8% | Peoria County 92% |
| 61336 | 44% | Putnam County 56% |
| 61560 | 4% | Putnam County 92%; Bureau County 4% |
| 61358 | 46% | LaSalle County 54% |
| 61321 | 3% | LaSalle County 97% |
| 61479 | 51% | Stark County 49% |
Source: U.S. Census Bureau, 2020 ZCTA-county relationship file (shares of land area).
Which first three digits do Marshall County's ZIP codes use?
The first three digits of a ZIP code name the sectional center, the mail processing plant that sorts it. Marshall County's ZIP codes use 4 prefixes: 613, 614, 615 and 617.
| Prefix | Sectional center | Here | All codes |
|---|---|---|---|
| 613 | Peoria, IL (SCF 615) | 6 | 62 |
| 614 | Peoria, IL (SCF 615) | 4 | 73 |
| 615 | Peoria, IL (SCF 615) | 8 | 48 |
| 617 | Champaign, IL (SCF 618) | 1 | 60 |
Source: U.S. Postal Service, labeling list L005 (3-digit ZIP Code prefix groups, SCF sortation), effective October 1, 2026.