Baltimore, MD 21230 ZIP Code Profile

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Baltimore, MD

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ZIP Code 21230: Basic Data & USPS Preferred City Name

Preferred Name, USPS
Baltimore, MD 21230

  • ZIP Code Type: STANDARD
  • County: Baltimore City County
  • Centroid: Latitude 39.271, Longitude -76.627
  • Time Zone: Eastern Time Zone (UTC -5 hours)
  • Observes DST: Yes
  • Businesses Addresses: 1,480
  • PO Box Addresses: 170
  • Residential Addresses: 16,524
    • Multi-Family Addresses: 2,978
    • Single Family Addresses: 13,546

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.


21230 ZIP Code Map

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Baltimore, MD 21230 Data & Demographics (As of July 1, 2017)


Total Population 34,531
Daytime Population: Workers 33,468
Daytime Population: Residents 13,951
Total Daytime Population (TDP) 47,419
Ratio TDP/Total Population1 1.37
Population in Households 34,338
Population in Familes 20,560
Population in Group Qrtrs 193
Population Density2 5,572
Diversity Index3 56


Median Household Income $62,336
Average Household Income $90,613
Per Capita Income $41,111


Total Housing Units 18,403 (100%)
Owner Occupied HU 8,190 (44.5%)
Renter Occupied HU 7,399 (40.2%)
Vacant Housing Units 2,814 (15.3%)
Median Home Value $237,198
Average Home Value $278,828


Total Households 15,589
Average Household Size 2.2
Family Households 7,113
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 0.42% 0.18%
Households 0.57% 0.24%
Families 0.33% 0.08%
Median Household Income   2.66%
Per Capita Income   2.99%

Baltimore, MD 21230 - Peer Comparisons by Rank and Percentile

The table below compares 21230 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 # 60 87th
Population Density # 36 92nd
Diversity Index # 118 74th
Median Household Income # 310 32nd
Per Capita Income # 168 63rd

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

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