Monkton, MD 21111 ZIP Code Profile

Related Place Profiles:
Hereford, MD | Monkton, MD

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ZIP Code 21111: Basic Data & USPS Preferred City Name

Preferred Name, USPS
Monkton, MD 21111

Acceptable Alternative
Hereford, MD 21111

  • ZIP Code Type: STANDARD
  • Businesses Addresses: 189
  • Single Family Addresses: 1,825
  • Multi-Family Addresses: 0
  • County: Baltimore County
  • Centroid: Latitude 39.57, Longitude -76.593
  • Time Zone: Eastern Time Zone (UTC -5 hours)
  • Observes DST: Yes

ZIP Code 21111 has segments in 2 Counties / Independent Cities (Baltimore, Harford).

Neighborhood Data

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21111 ZIP Code Map

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Monkton, MD 21111 Data & Demographics (As of July 1, 2016)


Total Population 4,762
Population in Households 4,752
Population in Familes 4,255
Population in Group Qrtrs 10
Population Density1 141
Diversity Index2 20


Total Households 1,724
Average Household Size 2.76
Family Households 1,370
Average Family Size 3


Total Housing Units 1,794 (100%)
Owner Occupied HU 1,511 (84.2%)
Renter Occupied HU 213 (11.9%)
Vacant Housing Units 70 ( 3.9%)
Median Home Value $645,772
Average Home Value $679,219


Median Household Income $113,320
Average Household Income $151,206
Per Capita Income $54,814
  (Compound Annual Growth Rates)


2010-2015 2015-2020
Population 0.36% 0.51%
Households 0.22% 0.4%
Families 0.12% 0.33%
Median Household Income   1.71%
Per Capita Income   1.78%
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.

Monkton, MD 21111 - Peer Comparisons by Rank and Percentile

The table below compares 21111 to the other 455 ZIP Codes in Maryland by rank and percentile using July 1, 2016 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 # 241 47th
Population Density1 # 317 31st
Diversity Index2 # 364 20th
Median Household Income # 60 87th
Per Capita Income # 43 91st

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