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The 21045 ZIP Code is centered1 in Howard County at latitude 39.204 and longitude -76.834. It is a standard type ZIP Code. Howard County is in the Eastern Time Zone (UTC -5 hours) and observes daylight savings time. The population in ZIP Code Tabulation Area (ZCTA) 21045 was 37,519 with 14,704 housing units; a land area land area of 10.27 sq. miles; a water area of 0.05 sq. miles; and a population density of 3,653.67 people per sq. mile for Census 2000. Demographic Profile |
Columbia, MD 21045 Map (Marker is ZIP Code Centroid)
Local Search, 21045 ZIP Code| Distance & Driving Directions
Nearby Cities, Towns & Census Designated Places
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Oakland Mills, MD
(1.4 miles NNW) Jonestown, MD (1.9 miles NE) Pfeiffer Corners, MD (2.4 miles ESE) Glenmar, MD (2.4 miles NE) Guilford, MD (2.4 miles S) |
Columbia, MD
(2.4 miles N) Simpsonville, MD (2.7 miles WSW) Waterloo, MD (3.4 miles SE) Worthington, MD (3.6 miles NE) Elioak, MD (3.6 miles NW) |
Nearby Neighborhoods, Subdivisions & Other Small Populated Places
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Sewells Orchard, MD
(< 0.1 mile) Jeffers Hill, MD (< 0.1 mile) Stevens Forest, MD (< 0.1 mile) Talbott Springs, MD (< 0.1 mile) Locust Park, MD (< 0.1 mile) |
Long Reach, MD
(1.4 miles NE) Phelps Luck, MD (1.4 miles NE) Owen Brown, MD (1.4 miles SSW) Thunder Hill, MD (1.4 miles N) Elkhorn, MD (1.4 miles S) |
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 / Independent Cities.
- 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.
