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ZIP Code 51003 has segments in 2 Counties (Plymouth, Sioux).
The 51003 ZIP Code is centered1 in Sioux County at latitude 42.988 and longitude -96.011 (Panoramio Photos). It is a standard type ZIP Code. Sioux County is in the Central Time Zone (UTC -6 hours) and observes daylight savings time.
The population in ZIP Code Tabulation Area (ZCTA) 51003 was 1,628 with 637 housing units; a land area land area of 52.23 sq. miles; a water area of 0.03 sq. miles; and a population density of 31.17 people per sq. mile for Census 2000. Demographic Profile
Alton, IA 51003 Map (Marker is ZIP Code Centroid)
Local Search, 51003 ZIP Code| Distance & Driving Directions
Nearby Cities, Towns & Census Designated Places
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Alton, IA
(< 0.1 mile) Orange City, IA (2.7 miles WNW) Carnes, IA (4.7 miles SSW) Newkirk, IA (6 miles NNE) Granville, IA (7 miles E) |
Hospers, IA
(8 miles NE) Maurice, IA (8.7 miles W) Middleburg, IA (9.2 miles NNW) Sioux Center, IA (10.4 miles NW) Seney, IA (11.1 miles SSW) |
Nearby Neighborhoods, Subdivisions & Other Small Populated Places
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Candlelight Trailer Court, IA
(2.4 miles WNW) Twilight Trailer Court, IA (3.1 miles WNW) Sunrise Mobile Home Park, IA (10 miles NW) Westbrook Village, IA (10.9 miles NW) |
ZIP Codes - Key Concepts
- ZIP Codes are categories for grouping mailing addresses and are not exact geographic regions.
- The centroid of a ZIP Code may be in one County and the associated city/town in another.
- In rural areas, a single ZIP Code may be used for cities and towns in several different Counties.
- ZIP Code "areas" can overlap, be subsets of each other, or be artificial constructs with no geographic area.
- 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.
