Port Deposit, MD 21904 ZIP Code Profile

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Port Deposit, MD

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ZIP Code 21904: Basic Data & USPS Preferred City Name

Preferred Name, USPS
Port Deposit, MD 21904

Acceptable Alternative
Bainbridge, MD 21904

  • ZIP Code Type: STANDARD
  • County: Cecil County
  • Centroid: Latitude 39.636, Longitude -76.079
  • Time Zone: Eastern Time Zone (UTC -5 hours)
  • Observes DST: Yes
  • Businesses Addresses: 96
  • PO Box Addresses: 103
  • Residential Addresses: 2,644
    • Multi-Family Addresses: 25
    • Single Family Addresses: 2,619

The ZIP Code maps and database are updated 4 times per year.
Database updated: February 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.


21904 ZIP Code Map

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Port Deposit, MD 21904 Data & Demographics (As of July 1, 2017)


Total Population 7,428
Daytime Population: Workers 1,137
Daytime Population: Residents 3,513
Total Daytime Population (TDP) 4,650
Ratio TDP/Total Population1 0.63
Population in Households 7,364
Population in Familes 6,233
Population in Group Qrtrs 64
Population Density2 301
Diversity Index3 23


Median Household Income $64,117
Average Household Income $79,898
Per Capita Income $28,669


Total Housing Units 2,986 (100%)
Owner Occupied HU 2,121 (71.0%)
Renter Occupied HU 515 (17.2%)
Vacant Housing Units 350 (11.7%)
Median Home Value $245,402
Average Home Value $270,910


Total Households 2,636
Average Household Size 2.79
Family Households 1,975
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 0.64% 0.52%
Households 0.6% 0.5%
Families 0.5% 0.41%
Median Household Income   1.89%
Per Capita Income   2.69%

Port Deposit, MD 21904 - Peer Comparisons by Rank and Percentile

The table below compares 21904 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 # 204 55th
Population Density # 253 45th
Diversity Index # 354 23rd
Median Household Income # 294 36th
Per Capita Income # 332 27th

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

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