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The 21738 ZIP Code is centered1 in Howard County at latitude 39.278 and longitude -77.016 (Panoramio Photos). 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) 21738 was 2,761 with 860 housing units; a land area land area of 9.73 sq. miles; a water area of 0 sq. miles; and a population density of 283.91 people per sq. mile for Census 2000. Demographic Profile
Glenwood, MD 21738 Map (Marker is ZIP Code Centroid)
Local Search, 21738 ZIP Code| Distance & Driving Directions
Nearby Cities, Towns & Census Designated Places
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Glenwood, MD
(< 0.1 mile) Glenelg, MD (1.4 miles SE) Knollwood, MD (1.4 miles SSW) Gary, MD (1.4 miles SSE) Ivory, MD (1.9 miles E) |
Inwood, MD
(1.9 miles N) Roxbury Mills, MD (2.4 miles SW) Dayton, MD (3.1 miles SSE) Carrs Mill, MD (3.1 miles NW) Daisy, MD (3.1 miles WNW) |
Nearby Neighborhoods, Subdivisions & Other Small Populated Places
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Warfield Estates, MD
(< 0.1 mile) Glenwood Estates, MD (< 0.1 mile) Green Meadows, MD (< 0.1 mile) Gwenlee Estates, MD (< 0.1 mile) Dill, MD (< 0.1 mile) |
Countryside, MD
(< 0.1 mile) Brantly, MD (< 0.1 mile) Burnt Woods, MD (1.4 miles E) Woodside Estates, MD (1.4 miles NNW) The Heritage, MD (1.4 miles SSE) |
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.
