Jefferson, MD 21755 ZIP Code Profile

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Jefferson, MD

ZIP Code 21755: Basic Data & USPS Preferred City Name

Preferred Name, USPS
Jefferson, MD 21755

  • ZIP Code Type: STANDARD
  • County: Frederick County
  • Centroid: Latitude 39.369, Longitude -77.565
  • Time Zone: Eastern Time Zone (UTC -5 hours)
  • Observes DST: Yes
  • Businesses Addresses: 119
  • PO Box Addresses: 188
  • Residential Addresses: 2,027
    • Multi-Family Addresses: 104
    • Single Family Addresses: 1,923

The ZIP Code maps and database are updated 4 times per year.
Database updated: May 1, 2018, Maps updated: February 1, 2018.

EXTREMELY LOCAL Demographic 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 demographic data.


21755 ZIP Code Map

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Jefferson, MD 21755 Data & Demographics (As of July 1, 2017)


Total Population 5,878
Daytime Population: Workers 1,498
Daytime Population: Residents 2,693
Total Daytime Population (TDP) 4,191
Ratio TDP/Total Population1 0.71
Population in Households 5,822
Population in Familes 5,157
Population in Group Qrtrs 56
Population Density2 182
Diversity Index3 23


Median Household Income $102,552
Average Household Income $116,056
Per Capita Income $42,105


Total Housing Units 2,197 (100%)
Owner Occupied HU 1,811 (82.4%)
Renter Occupied HU 304 (13.8%)
Vacant Housing Units 82 ( 3.7%)
Median Home Value $374,584
Average Home Value $407,951


Total Households 2,115
Average Household Size 2.75
Family Households 1,660
Average Family Size 3
  1. If the ratio of the TDP to Total Population is greater than 1, the location gains population during the day when commuting workers are present. If the ratio is less than 1, the location is more of a bedroom community where people commute to another place for work.
  2. Population Density = Total Population per square mile.
  3. The Diversity Index is a scale of 0 to 100 that represents the likelihood 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.


2010-2017 2017-2022
Population 0.56% 0.73%
Households 0.58% 0.72%
Families 0.47% 0.62%
Median Household Income   1.01%
Per Capita Income   2.02%

Jefferson, MD 21755 - Peer Comparisons by Rank and Percentile

The table below compares 21755 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 # 226 51st
Population Density # 305 33rd
Diversity Index # 357 22nd
Median Household Income # 114 75th
Per Capita Income # 148 68th

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

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