Sykesville, MD 21784 ZIP Code Profile

Related Place Profiles:
Eldersburg, MD | Gaither, MD | Sykesville, MD

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ZIP Code 21784: Basic Data & USPS Preferred City Name

Preferred Name, USPS
Sykesville, MD 21784

Acceptable Alternative
Eldersburg, MD 21784
Gaither, MD 21784

  • ZIP Code Type: STANDARD
  • Businesses Addresses: 1,033
  • Single Family Addresses: 13,190
  • Multi-Family Addresses: 719
  • County: Carroll County
  • Centroid: Latitude 39.338, Longitude -76.972
  • Time Zone: Eastern Time Zone (UTC -5 hours)
  • Observes DST: Yes

ZIP Code 21784 has segments in 2 Counties / Independent Cities (Carroll, Howard).

Neighborhood Data

Address Based Hyperlocal Data Input an address and get data & demographics for the pertinent census block group (CBG), a searchable map and a customized directory. The CBG is the smallest geographical unit used by the Census Bureau for reporting certain data.


21784 ZIP Code Map

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Sykesville, MD 21784 Data & Demographics (As of July 1, 2016)


Total Population 39,113
Population in Households 37,941
Population in Familes 33,786
Population in Group Qrtrs 1,172
Population Density1 740
Diversity Index2 24


Total Households 13,476
Average Household Size 2.82
Family Households 10,576
Average Family Size 3


Total Housing Units 13,983 (100%)
Owner Occupied HU 11,385 (81.4%)
Renter Occupied HU 2,091 (15.0%)
Vacant Housing Units 507 ( 3.6%)
Median Home Value $390,101
Average Home Value $433,177


Median Household Income $106,652
Average Household Income $123,142
Per Capita Income $42,799
  (Compound Annual Growth Rates)


2010-2015 2015-2020
Population 0.42% 0.41%
Households 0.43% 0.44%
Families 0.36% 0.39%
Median Household Income   1.41%
Per Capita Income   1.79%
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.

Sykesville, MD 21784 - Peer Comparisons by Rank and Percentile

The table below compares 21784 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 # 40 91st
Population Density1 # 177 61st
Diversity Index2 # 337 26th
Median Household Income # 90 80th
Per Capita Income # 131 71st

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