US Gazetteer > Illinois Gazetteer > Illinois ZIP Codes > Rockford, IL 61101

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Rockford, IL 61101

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The 61101 ZIP Code is centered1 in Winnebago County at latitude 42.299 and longitude -89.13 (Panoramio Photos). It is a standard type ZIP Code. Winnebago County is in the Central Time Zone (UTC -6 hours) and observes daylight savings time.

The population in ZIP Code Tabulation Area (ZCTA) 61101 was 23,347 with 8,947 housing units; a land area land area of 41.7 sq. miles; a water area of 0.02 sq. miles; and a population density of 559.82 people per sq. mile for Census 2000. Demographic Profile

Rockford, IL 61101 Map (Marker is ZIP Code Centroid)

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Nearby Cities, Towns & Census Designated Places

Westmoreland, IL (2.4 miles SW)
Rockford, IL (2.7 miles SE)
Loves Park, IL (3.9 miles ENE)
Owen Center, IL (4.7 miles N)
Wempletown, IL (4.9 miles NW)
North Park, IL (4.9 miles NE)
Machesney Park, IL (5.8 miles NE)
Latham Park, IL (6 miles NE)
Winnebago, IL (6.1 miles WSW)
Hutchins Park, IL (6.4 miles NNE)

Nearby Neighborhoods, Subdivisions & Other Small Populated Places

Nottingham Manor, IL (1.9 miles NNE)
Colonial Gardens, IL (3.1 miles NE)
Jonesville, IL (3.4 miles ENE)
Ruby, IL (3.4 miles ENE)
Genet, IL (4.1 miles NE)
Coreys Bluff, IL (4.3 miles S)
Mutimer Subdivision, IL (4.5 miles S)
Sturbridge Village, IL (4.7 miles NE)
River Forest, IL (4.7 miles SSE)
Indian Village, IL (4.9 miles SSE)

ZIP Codes - Key Concepts

  1. ZIP Codes are categories for grouping mailing addresses and are not exact geographic regions.
  2. The centroid of a ZIP Code may be in one County and the associated city/town in another.
  3. In rural areas, a single ZIP Code may be used for cities and towns in several different Counties.
  4. ZIP Code "areas" can overlap, be subsets of each other, or be artificial constructs with no geographic area.
  5. ZIP Codes are only loosely tied to cities.

1 Keeping the above key concepts in mind, what we informally refer to as the "center" of a ZIP Code is most often actually the centroid of a polygon.