📍 View location on OpenStreetMap (42.337270, -89.147250)
| Data Metric | Local Statistic |
|---|---|
| Postal / Zip Code | 61101 |
| Primary City | Rockford |
| State / Province | IL |
| County | Winnebago |
| Total Population | 19,318 |
| Population Density | 179.6 people/sq mi |
| Timezone | America/Chicago |
| Metric | ZIP 61101 | Winnebago County records | IL records |
|---|---|---|---|
| Population estimate | 19,318 | 285,063 (sum) | 12,694,745 (sum) |
| Population Density | 179.6 /sq mi | -- | -- |
| County population rank | #8 of 20 | -- | -- |
| State population rank | #246 of 1,390 | -- | -- |
Regional sums combine the population estimates in the listed ZIP records; they are not official county or state population totals.
| ZIP Code | City | Distance | Population estimate |
|---|---|---|---|
| ZIP 61103 | Rockford | 3.3 mi | 22,869 |
| ZIP 61115 | Machesney Park | 6.3 mi | 22,364 |
| ZIP 61104 | Rockford | 6.9 mi | 17,222 |
| ZIP 61088 | Winnebago | 7.2 mi | 6,167 |
| ZIP 61111 | Loves Park | 7.3 mi | 23,286 |
Data Sources & Methodology: Geographic coordinates and ZIP Code assignments are derived from underlying geographic and postal datasets. Note that ZIP Codes are USPS postal delivery areas, while Census ZCTAs are statistical approximation areas. Read full methodology →