Winnebago
Source:
Illinois
Winnebago is a major-metro county in Illinois with 20 ZIP codes, 296,152 people, and above-median household income among US counties. All data is sourced from the U.S. Census Bureau American Community Survey (ACS) 2023 5-Year Estimates.
National county placement
According to ACS 5-Year Estimates, Winnebago, IL sits among US counties with an above-median household income, on a major-metro county population base, across a multi-ZIP patchwork.
- Top 46%
- household income vs 3,210 US counties
- 296,152
- combined ZIP population
- 20
- USPS ZIP codes covered
- $69,184
- avg ZIP median income
Income percentile ranks this county's average ZIP median household income against 3,210 US counties with ACS income on at least one ZIP.
Winnebago lands in the national county income distribution as above-median household income on major-metro county footing (FIPS 17201, 20 ZIPs, combined population 296,152). Sort the ZIP table by population before treating the county mean as uniform.
Above-median income across 20 ZIPs means the county average is a compromise. Sort by population, save the largest urban ZIP and one sparse code, then compare - that pair usually shows whether density or income is doing the work inside Winnebago.
Save two ZIPs from the table into your shortlist, then open a compare link - that is the return path a static county summary cannot replace. All figures here come from Census ACS 2023 5-Year Estimates and USPS ZCTA files.
20
Total ZIPs
296,152
Total Population
ZIP Codes in Winnebago
Side-by-side: Compare 61107 vs 61108 →
| ZIP Code | City | Population | Density |
|---|---|---|---|
| 61107 | Rockford | 30,439 | 793 |
| 61108 | Rockford | 28,550 | 1,036 |
| 61109 | Rockford | 28,333 | 283 |
| 61103 | Rockford | 24,578 | 550 |
| 61111 | Loves Park | 23,492 | 637 |
| 61115 | Machesney Park | 23,180 | 842 |
| 61101 | Rockford | 21,593 | 200 |
| 61102 | Rockford | 20,538 | 230 |
| 61073 | Roscoe | 20,052 | 283 |
| 61104 | Rockford | 19,269 | 1,650 |
| 61114 | Rockford | 15,776 | 766 |
| 61072 | Rockton | 11,797 | 87 |
| 61080 | South Beloit | 10,599 | 163 |
| 61088 | Winnebago | 6,020 | 42 |
| 61016 | Cherry Valley | 4,837 | 66 |
| 61063 | Pecatonica | 4,132 | 21 |
| 61024 | Durand | 2,620 | 16 |
| 61079 | Shirland | 188 | 41 |
| 61112 | Rockford | 86 | 43 |
| 61077 | Seward | 73 | 881 |
Frequently Asked Questions
What is the population of Winnebago?
Winnebago has a total population of 296,152 across 20 ZIP codes, based on U.S. Census Bureau ACS 2023 data.
What ZIP codes are in Winnebago?
Winnebago includes 20 ZIP codes: 61107, 61108, 61109, 61103, 61111, 61115, 61101, 61102, 61073, 61104, and more.