Ellicott City, MD 21043 ZIP Code Profile

Related Place Profiles:
Ellicott City, MD | Ilchester, MD

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ZIP Code 21043: Basic Data & USPS Preferred City Name

Preferred Name, USPS
Ellicott City, MD 21043

Acceptable Alternative
Daniels, MD 21043
Ilchester, MD 21043
Oella, MD 21043

Not Acceptable, USPS
Ellicott, MD 21043

  • ZIP Code Type: STANDARD
  • Businesses Addresses: 745
  • Single Family Addresses: 12,446
  • Multi-Family Addresses: 5,148
  • County: Howard County
  • Centroid: Latitude 39.266, Longitude -76.846
  • Time Zone: Eastern Time Zone (UTC -5 hours)
  • Observes DST: Yes

ZIP Code 21043 has segments in 2 Counties / Independent Cities (Baltimore, Howard).

Neighborhood Data

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21043 ZIP Code Map

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Ellicott City, MD 21043 Data & Demographics (As of July 1, 2016)


Total Population 47,791
Population in Households 47,508
Population in Familes 40,271
Population in Group Qrtrs 283
Population Density1 2,726
Diversity Index2 65


Total Households 17,505
Average Household Size 2.71
Family Households 12,264
Average Family Size 3


Total Housing Units 18,211 (100%)
Owner Occupied HU 11,509 (63.2%)
Renter Occupied HU 5,996 (32.9%)
Vacant Housing Units 706 ( 3.9%)
Median Home Value $476,758
Average Home Value $500,719


Median Household Income $106,432
Average Household Income $133,179
Per Capita Income $48,998
  (Compound Annual Growth Rates)


2010-2015 2015-2020
Population 1.79% 1.94%
Households 1.68% 1.87%
Families 1.5% 1.76%
Median Household Income   1.77%
Per Capita Income   1.5%
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.

Ellicott City, MD 21043 - Peer Comparisons by Rank and Percentile

The table below compares 21043 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 # 22 95th
Population Density1 # 87 81st
Diversity Index2 # 67 86th
Median Household Income # 91 80th
Per Capita Income # 74 84th

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