US Gazetteer > Iowa Gazetteer > Iowa ZIP Codes > Sioux City, IA 51111

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Sioux City, IA 51111

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The 51111 ZIP Code is centered1 in Woodbury County at latitude 42.426 and longitude -96.375 (Panoramio Photos). It is a standard type ZIP Code. Woodbury County is in the Central Time Zone (UTC -6 hours) and observes daylight savings time.

The population in ZIP Code Tabulation Area (ZCTA) 51111 was 140 with 58 housing units; a land area land area of 6.39 sq. miles; a water area of 0.02 sq. miles; and a population density of 21.92 people per sq. mile for Census 2000. Demographic Profile

Sioux City, IA 51111 Map (Marker is ZIP Code Centroid)

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Nearby Cities, Towns & Census Designated Places

Sergeant Bluff, IA (1.9 miles SSE)
Dakota City, NE (2.4 miles WSW)
Morningside, IA (3.1 miles NNE)
North Shore, NE (3.6 miles WNW)
South Sioux City, NE (3.9 miles NNW)
Millis Beach, NE (3.9 miles W)
Sioux City, IA (5.3 miles NNW)
Springdale, IA (6.7 miles N)
Leeds, IA (8 miles N)
Bronson, IA (8.3 miles E)

Nearby Neighborhoods, Subdivisions & Other Small Populated Places

Estates West, IA (1.4 miles SSE)
Glen Ellen, IA (2.7 miles E)
Lake Village Trailer Court, NE (3.1 miles WNW)
Freeway Homes, NE (3.4 miles WNW)
Shady Elm Trailer Court, NE (3.9 miles NNW)
Regency of Sioux City, IA (4.3 miles NNE)
Holiday Village, IA (6.4 miles N)
Tallview Terrace Mobile Home Park, IA (6.8 miles N)
Dakota Dunes, SD (7.1 miles NW)
Evergreen Village, IA (9.5 miles N)

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.