Ridgely, MD 21660 ZIP Code Profile

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Ridgely, MD

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ZIP Code 21660: Basic Data & USPS Preferred City Name

Preferred Name, USPS
Ridgely, MD 21660

  • ZIP Code Type: STANDARD
  • Businesses Addresses: 103
  • Single Family Addresses: 1,301
  • Multi-Family Addresses: 0
  • County: Caroline County
  • Centroid: Latitude 38.943, Longitude -75.89
  • Time Zone: Eastern Time Zone (UTC -5 hours)
  • Observes DST: Yes

Neighborhood Data

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21660 ZIP Code Map

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Ridgely, MD 21660 Data & Demographics (As of July 1, 2017)


Total Population 4,315
Population in Households 4,199
Population in Familes 3,513
Population in Group Qrtrs 116
Population Density1 135
Diversity Index2 46


Total Households 1,500
Average Household Size 2.8
Family Households 1,078
Average Family Size 3


Total Housing Units 1,599 (100%)
Owner Occupied HU 1,096 (68.5%)
Renter Occupied HU 404 (25.3%)
Vacant Housing Units 99 ( 6.2%)
Median Home Value $237,991
Average Home Value $303,399


Median Household Income $61,771
Average Household Income $76,590
Per Capita Income $27,402
  (Compound Annual Growth Rates)


2010-2015 2015-2020
Population 0.8% 0.55%
Households 0.77% 0.55%
Families 0.66% 0.48%
Median Household Income   1.43%
Per Capita Income   2.73%
1) Population Density = Total Population per square mile.
2) The Diversity Index is a scale of 0 to 100 that represents the likelyhood that two persons, chosen at random from the same area, belong to different race or ethnic groups. If an area's entire population belongs to one race AND one ethnic group, then the area has zero diversity. An area's diversity index increases to 100 when the population is evenly divided into two or more race/ethnic groups.
Based on Census 2010 counts, the Diversity Index for the United States was 60.6 and it is expected to increase to 64.8 by July 1, 2018.

Ridgely, MD 21660 - Peer Comparisons by Rank and Percentile

The table below compares 21660 to the other 456 ZIP Codes in Maryland by rank and percentile using July 1, 2017 data. The location Ranked # 1 has the highest value. A location that ranks higher than 75% of its peers would be in the 75th percentile of the peer group.

Variable Description Rank Percentile
Total Population # 249 46th
Population Density1 # 328 28th
Diversity Index2 # 181 61st
Median Household Income # 314 31st
Per Capita Income # 358 22nd

Additional comparisons and rankings can be made with a VERY EASY TO USE Maryland Census Data Comparison Tool.

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