Baltimore, MD 21251 ZIP Code Profile

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Baltimore, MD

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ZIP Code 21251: Basic Data & USPS Preferred City Name

Preferred Name, USPS
Baltimore, MD 21251

Not Acceptable, USPS
Morgan State University, MD 21251

  • County: Baltimore City County
  • Centroid: Latitude 39.341, Longitude -76.586
  • Time Zone: Eastern Time Zone (UTC -5 hours)
  • Observes DST: Yes
  • Businesses Addresses: 1
  • PO Box Addresses: 0
  • Residential Addresses: 0
    • Multi-Family Addresses: 0
    • Single Family Addresses: 0

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.


21251 ZIP Code Map

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Baltimore, MD 21251 Data & Demographics (As of July 1, 2017)


Total Population 1,737
Daytime Population: Workers 1,018
Daytime Population: Residents 1,248
Total Daytime Population (TDP) 2,266
Ratio TDP/Total Population1 1.30
Population in Households 20
Population in Familes 16
Population in Group Qrtrs 1,717
Population Density2 13,392
Diversity Index3 12


Median Household Income $50,000
Average Household Income $62,251
Per Capita Income $7,735


Total Housing Units 19 (100%)
Owner Occupied HU 5 (26.3%)
Renter Occupied HU 3 (15.8%)
Vacant Housing Units 11 (57.9%)
Median Home Value $125,000
Average Home Value $125,000


Total Households 8
Average Household Size 2.5
Family Households 5
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 -0.12% -0.36%
Households -1.61% 0.0%
Families -2.48% 0.0%
Median Household Income   0.0%
Per Capita Income   0.25%

Baltimore, MD 21251 - Peer Comparisons by Rank and Percentile

The table below compares 21251 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 # 322 30th
Population Density # 4 99th
Diversity Index # 418 9th
Median Household Income # 398 13th
Per Capita Income # 452 1st

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

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