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The 51446 ZIP Code is centered1 in Shelby County at latitude 41.791 and longitude -95.21 (Panoramio Photos). It is a standard type ZIP Code. Shelby County is in the Central Time Zone (UTC -6 hours) and observes daylight savings time.
The population in ZIP Code Tabulation Area (ZCTA) 51446 was 602 with 271 housing units; a land area land area of 37.92 sq. miles; a water area of 0 sq. miles; and a population density of 15.87 people per sq. mile for Census 2000. Demographic Profile
Irwin, IA 51446 Map (Marker is ZIP Code Centroid)
Local Search, 51446 ZIP Code| Distance & Driving Directions
Nearby Cities, Towns & Census Designated Places
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Irwin, IA
(< 0.1 mile) Kirkman, IA (5.1 miles SSW) Red Line, IA (6 miles SSE) Botna, IA (6 miles NE) Astor, IA (6.1 miles NNW) |
Manilla, IA
(7 miles N) Fiscus, IA (7 miles ESE) Defiance, IA (7.2 miles WNW) Aspinwall, IA (9.2 miles NNE) Poplar, IA (9.3 miles SE) |
Nearby Neighborhoods, Subdivisions & Other Small Populated Places
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Poplar, IA
(9.3 miles SE) Harlan Trailer Court, IA (10.4 miles SSW) Westridge Mobile Home Park, IA (12 miles SSW) |
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.
