Winnebago County ZIP Codes

List of ZIP Codes in Winnebago County

The following table lists ZIP Codes associated with Winnebago County, Illinois, based on ZIP Code Tabulation Area (ZCTA) data from the U.S. Census Bureau.


S.N. Zip Code Latitude Longitude City Population Density
1 61016 42.19761 -88.94704 Cherry Valley 5,166 70.6
2 61024 42.43629 -89.29183 Durand 2,264 14.8
3 61063 42.31305 -89.34691 Pecatonica 4,257 22.0
4 61072 42.44661 -89.14109 Rockton 11,342 83.7
5 61073 42.42434 -88.99346 Roscoe 20,008 276.5
6 61077 42.24012 -89.34806 Seward 101 49.1
7 61079 42.44681 -89.20955 Shirland 220 22.0
8 61080 42.47992 -88.98989 South Beloit 11,062 170.5
9 61088 42.26995 -89.25509 Winnebago 5,992 40.9
10 61101 42.33727 -89.14725 Rockford 19,671 182.9
11 61102 42.22995 -89.15632 Rockford 16,620 188.1
12 61103 42.3453 -89.08271 Rockford 23,238 549.2
13 61104 42.25186 -89.07911 Rockford 17,584 1508.6
14 61107 42.28344 -89.00348 Rockford 29,473 762.8
15 61108 42.25515 -89.00236 Rockford 30,202 1068.2
16 61109 42.1924 -89.05392 Rockford 26,714 267.8
17 61111 42.33538 -89.00369 Loves Park 22,838 619.8
18 61112 42.24193 -88.97523 Rockford 116 56.7
19 61114 42.30854 -88.9892 Rockford 15,026 712.4
20 61115 42.36365 -89.02869 Machesney Park 22,424 813.0


About Winnebago County ZIP Codes

Winnebago County in Illinois (IL) is served by approximately 20 ZIP Codes. These codes cover residential neighborhoods, business districts, and rural areas that fall under the county's jurisdiction.

Based on ZIP-level population estimates, the total population covered by these ZIP Codes is around 284,318 people. Population and density values vary from one ZIP Code to another, reflecting the mix of dense urban communities and lower-density suburban or rural zones.

Many of the most significant population centers in Winnebago County are located in cities such as Rockford, Loves Park, Machesney Park, Roscoe, Rockton. These cities and towns help define the economic and demographic character of the county.

Most ZIP Codes in Winnebago County, Illinois follow the America/Chicago time zone.