US Gazetteer > Maryland Gazetteer > Maryland ZIP Codes > Keymar, MD 21757

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Preferred Name, USPS
Keymar, MD 21757
Acceptable Alternative
Detour, MD 21757
Middleburg, MD 21757

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Weather forecast ZIP Code 21757

ZIP Code 21757 has segments in 2 Counties / Independent Cities (Carroll, Frederick).

The 21757 ZIP Code is centered1 in Carroll County at latitude 39.601 and longitude -77.254 (Panoramio Photos). It is a standard type ZIP Code. Carroll County is in the Eastern Time Zone (UTC -5 hours) and observes daylight savings time.

The population in ZIP Code Tabulation Area (ZCTA) 21757 was 3,045 with 1,115 housing units; a land area land area of 38.69 sq. miles; a water area of 0 sq. miles; and a population density of 78.70 people per sq. mile for Census 2000. Demographic Profile

Keymar, MD 21757 Map (Marker is ZIP Code Centroid)

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Nearby Cities, Towns & Census Designated Places

Keymar, MD (< 0.1 mile)
Detour, MD (< 0.1 mile)
Bruceville, MD (1.4 miles ENE)
Simpsons Mill, MD (1.9 miles SE)
Ladiesburg, MD (1.9 miles SSW)
Keysville, MD (2.4 miles N)
Middleburg, MD (2.4 miles ESE)
Walden Farms, MD (2.4 miles E)
Crouse Mill, MD (2.7 miles ENE)
Feesersburg, MD (2.7 miles E)

Nearby Neighborhoods, Subdivisions & Other Small Populated Places

Haughs Hideway, MD (1.4 miles W)
Wolfs Den, MD (1.9 miles SSW)
Carroll View, MD (1.9 miles N)
Dinterman, MD (1.9 miles N)
Phylpres, MD (2.4 miles WNW)
Rocky Ridge Estates, MD (2.7 miles W)
Sharrer Heights, MD (3.1 miles SW)
Stone Manor, MD (3.1 miles S)
Vicmyer Vista, MD (3.4 miles W)
Good Hill, MD (3.4 miles SW)

ZIP Codes - Key Concepts

  1. ZIP Codes are categories for grouping mailing addresses and are not exact geographic regions.
  2. The centroid of a ZIP Code may be in one County and the associated city/town in another.
  3. In rural areas, a single ZIP Code may be used for cities and towns in several different Counties / Independent Cities.
  4. ZIP Code "areas" can overlap, be subsets of each other, or be artificial constructs with no geographic area.
  5. 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.