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The 51231 ZIP Code is centered1 in Obrien County at latitude 43.115 and longitude -95.746 (Panoramio Photos). It is a standard type ZIP Code. Obrien County is in the Central Time Zone (UTC -6 hours) and observes daylight savings time.
The population in ZIP Code Tabulation Area (ZCTA) 51231 was 280 with 127 housing units; a land area land area of 24.86 sq. miles; a water area of 0 sq. miles; and a population density of 11.26 people per sq. mile for Census 2000. Demographic Profile
Archer, IA 51231 Map (Marker is ZIP Code Centroid)
Local Search, 51231 ZIP Code| Distance & Driving Directions
Nearby Cities, Towns & Census Designated Places
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Archer, IA
(< 0.1 mile) Philby, IA (4.3 miles SW) Primghar, IA (6.3 miles ESE) Sanborn, IA (6.4 miles NE) Sheldon, IA (7.2 miles NW) |
Hospers, IA
(8.5 miles WSW) Ritter, IA (9.7 miles NNW) Paullina, IA (9.9 miles SSE) Mapleside, IA (10 miles SE) Gaza, IA (10.7 miles SE) |
Nearby Neighborhoods, Subdivisions & Other Small Populated Places
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Evander, IA
(4.5 miles N) Max, IA (9.1 miles ENE) |
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.
