County ZIP codes · Illinois · FIPS 17141
Ogle County, IL ZIP Codes
Ogle County, Illinois has 26 ZIP codes (Census 2020 ZCTA-county file; GeoNames postal codes, October 2026), all residential. 17 of the residential ones lie mainly in Ogle County and 9 mainly in a neighboring county; 16 cross the county line. Median household income ranges from $46,599 in 61102 (Rockford) to $105,769 in 61020 (Davis Junction) (Census Bureau, ACS 2020-2024).
- ACS2020-24
- Census2020
Where are the ZIP codes of Ogle 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 $71,655 and $88,032.
They carry 25 postal town names.
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B19013).
All 26 residential ZIP codes in Ogle County
17 ZIP codes lie mainly in Ogle County; 9 more reach into it from a neighboring county and follow the first table.
| In this county | ||||||
|---|---|---|---|---|---|---|
| 61068 | Rochelle | 14,788 | 123 | $73k | $171k | 89% |
| 61010 | Byron | 7,497 | 196 | $94k | $235k | 100% |
| 61061 | Oregon | 6,766 | 64 | $88k | $196k | 100% |
| 61064 | Polo | 3,757 | 35 | $75k | $164k | 94% |
| 61054 | Mount Morris | 3,610 | 86 | $48k | $121k | 100% |
| 61084 | Stillman Valley | 3,201 | 92 | $103k | $214k | 93% |
| 61020 | Davis Junction | 3,149 | 100 | $106k | $203k | 91% |
| 61030 | Forreston | 2,194 | 36 | $72k | $157k | 100% |
| 61047 | Leaf River | 1,622 | 24 | $86k | $242k | 92% |
| 61052 | Monroe Center | 1,145 | 41 | $92k | $226k | 100% |
| 61015 | Chana | 901 | 23 | $98k | $193k | 100% |
| 61049 | Lindenwood | 579 | 28 | $92k | $178k | 100% |
| 60113 | Creston | 306 | 3,221 | $67k | $166k | 100% |
| 61091 | Woosung | 248 | 98 | – | – | 100% |
| 60129 | Esmond | 229 | 14 | $118k | $188k | 73% |
| 61007 | Baileyville | 196 | 8 | – | – | 57% |
| 61043 | Holcomb | 143 | 298 | $69k | $124k | 100% |
Partly in Ogle County
| In this county | ||||||
|---|---|---|---|---|---|---|
| 61039 | German Valley | 824 | 29 | $84k | $181k | 38% |
| 61006 | Ashton | 1,541 | 22 | $76k | $156k | 27% |
| 61078 | Shannon | 1,459 | 26 | $76k | $133k | 16% |
| 61102 | Rockford | 15,937 | 467 | $47k | $99k | 12% |
| 61021 | Dixon | 22,308 | 149 | $69k | $149k | 10% |
| 61031 | Franklin Grove | 1,492 | 33 | $75k | $137k | 5% |
| 61051 | Milledgeville | 1,469 | 29 | $60k | $104k | 4% |
| 61109 | Rockford | 26,768 | 695 | $63k | $139k | 3% |
| 60146 | Kirkland | 2,369 | 43 | $88k | $222k | 2% |
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?
16 ZIP codes of Ogle County extend into another county. A ZIP code follows mail routes, not county borders.
| ZIP | In Ogle | Elsewhere |
|---|---|---|
| 61109 | 3% | Winnebago County 97% |
| 61021 | 10% | Lee County 90% |
| 61102 | 12% | Winnebago County 88% |
| 61068 | 89% | Lee County 10%; DeKalb County 1% |
| 61064 | 94% | Carroll County 4%; Lee County 1% |
| 61084 | 93% | Winnebago County 7% |
| 61020 | 91% | Winnebago County 9% |
| 60146 | 2% | DeKalb County 88%; Boone County 10% |
| 61047 | 92% | Winnebago County 6%; Stephenson County 2% |
| 61006 | 27% | Lee County 73% |
| 61031 | 5% | Lee County 95% |
| 61051 | 4% | Carroll County 96% |
| 61078 | 16% | Carroll County 66%; Stephenson County 18% |
| 61039 | 38% | Stephenson County 62% |
| 60129 | 73% | DeKalb County 27% |
| 61007 | 57% | Stephenson County 43% |
Source: U.S. Census Bureau, 2020 ZCTA-county relationship file (shares of land area).
Which first three digits do Ogle County's ZIP codes use?
The first three digits of a ZIP code name the sectional center, the mail processing plant that sorts it. Ogle County's ZIP codes use 3 prefixes: 601, 610 and 611.
| Prefix | Sectional center | Here | All codes |
|---|---|---|---|
| 601 | Carol Stream, IL (SCF 601) | 3 | 89 |
| 610 | Palatine, IL (SCF 600) | 21 | 66 |
| 611 | Palatine, IL (SCF 600) | 2 | 19 |
Source: U.S. Postal Service, labeling list L005 (3-digit ZIP Code prefix groups, SCF sortation), effective October 1, 2026.