County ZIP codes · Illinois · FIPS 17143
Peoria County, IL ZIP Codes
Peoria County, Illinois has 48 ZIP codes (Census 2020 ZCTA-county file; GeoNames postal codes, October 2026): 28 residential and 20 for PO boxes or a single organization. 25 of the residential ones lie mainly in Peoria County and 3 mainly in a neighboring county; 9 cross the county line. Median household income ranges from $26,392 in 61605 (Peoria) to $183,140 in 61528 (Edwards) (Census Bureau, ACS 2020-2024).
- ACS2020-24
- Census2020
Where are the ZIP codes of Peoria 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 $60,099 and $79,817.
They carry 20 postal town names.
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B19013).
All 28 residential ZIP codes in Peoria County
25 ZIP codes lie mainly in Peoria County; 3 more reach into it from a neighboring county and follow the first table.
| In this county | ||||||
|---|---|---|---|---|---|---|
| 61604 | Peoria | 28,313 | 1,863 | $52k | $100k | 100% |
| 61614 | Peoria | 27,370 | 2,277 | $67k | $172k | 100% |
| 61615 | Peoria | 23,523 | 794 | $80k | $216k | 100% |
| 61603 | Peoria | 15,356 | 3,635 | $42k | $78k | 100% |
| 61605 | Peoria | 13,424 | 3,066 | $26k | $47k | 100% |
| 61525 | Dunlap | 12,357 | 378 | $161k | $320k | 100% |
| 61607 | Peoria | 10,600 | 315 | $76k | $157k | 100% |
| 61523 | Chillicothe | 10,203 | 192 | $80k | $162k | 94% |
| 61606 | Peoria | 6,684 | 5,461 | $39k | $143k | 100% |
| 61616 | Peoria Heights | 5,825 | 2,292 | $60k | $118k | 100% |
| 61559 | Princeville | 3,595 | 37 | $101k | $184k | 91% |
| 61547 | Mapleton | 3,562 | 162 | $108k | $243k | 100% |
| 61536 | Hanna City | 3,503 | 86 | $74k | $172k | 100% |
| 61528 | Edwards | 3,212 | 173 | $183k | $329k | 100% |
| 61517 | Brimfield | 3,033 | 44 | $100k | $275k | 100% |
| 61529 | Elmwood | 2,763 | 43 | $92k | $165k | 98% |
| 61533 | Glasford | 2,441 | 60 | $73k | $156k | 83% |
| 61602 | Peoria | 1,163 | 1,044 | $34k | $231k | 100% |
| 61526 | Edelstein | 1,105 | 36 | $118k | $262k | 92% |
| 61569 | Trivoli | 938 | 26 | $77k | $212k | 98% |
| 61625 | Peoria | 456 | 7,238 | – | – | 100% |
| 61451 | Laura | 272 | 13 | $44k | $122k | 100% |
| 61539 | Kingston Mines | 147 | 132 | $51k | $57k | 100% |
| 61552 | Mossville | 51 | 46 | – | $56k | 100% |
| 61562 | Rome | 38 | 864 | – | – | 100% |
Partly in Peoria 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?
9 ZIP codes of Peoria County extend into another county. A ZIP code follows mail routes, not county borders.
| ZIP | In Peoria | Elsewhere |
|---|---|---|
| 61523 | 94% | Marshall County 6% |
| 61559 | 91% | Stark County 9% |
| 61531 | 14% | Fulton County 63%; Knox County 23% |
| 61529 | 98% | Knox County 2% |
| 61533 | 83% | Fulton County 17% |
| 61565 | 1% | Marshall County 99% |
| 61526 | 92% | Marshall County 8% |
| 61569 | 98% | Fulton County 2% |
| 61489 | 3% | Knox County 97% |
Source: U.S. Census Bureau, 2020 ZCTA-county relationship file (shares of land area).
PO Box and single-organization ZIP codes
| ZIP | Postal name |
|---|---|
| 61601 | Peoria |
| 61612 | Peoria |
| 61613 | Peoria |
| 61629 | Peoria |
| 61630 | Peoria |
| 61633 | Peoria |
| 61634 | Peoria |
| 61636 | Peoria |
| 61637 | Peoria |
| 61638 | Peoria |
| 61639 | Peoria |
| 61641 | Peoria |
| 61643 | Peoria |
| 61650 | Peoria |
| 61651 | Peoria |
| 61652 | Peoria |
| 61653 | Peoria |
| 61654 | Peoria |
| 61655 | Peoria |
| 61656 | Peoria |
Source: GeoNames postal codes (CC BY 4.0).
Which first three digits do Peoria County's ZIP codes use?
The first three digits of a ZIP code name the sectional center, the mail processing plant that sorts it. Peoria County's ZIP codes use 3 prefixes: 614, 615 and 616.
| Prefix | Sectional center | Here | All codes |
|---|---|---|---|
| 614 | Peoria, IL (SCF 615) | 2 | 73 |
| 615 | Peoria, IL (SCF 615) | 16 | 48 |
| 616 | Peoria, IL (SCF 615) | 30 | 33 |
Source: U.S. Postal Service, labeling list L005 (3-digit ZIP Code prefix groups, SCF sortation), effective October 1, 2026.