Severn, MD 21144 ZIP Code Profile

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Severn, MD

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ZIP Code 21144: Basic Data & USPS Preferred City Name

Preferred Name, USPS
Severn, MD 21144

  • ZIP Code Type: STANDARD
  • Businesses Addresses: 290
  • Single Family Addresses: 12,424
  • Multi-Family Addresses: 80
  • County: Anne Arundel County
  • Centroid: Latitude 39.131, Longitude -76.69
  • Time Zone: Eastern Time Zone (UTC -5 hours)
  • Observes DST: Yes

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.


21144 ZIP Code Map

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Severn, MD 21144 Data & Demographics (As of July 1, 2017)


Total Population 36,806
Daytime Population: Workers 5,119
Daytime Population: Residents 17,643
Total Daytime Population (TDP) 22,762
Ratio TDP/Total Population1 0.62
Population in Households 36,785
Population in Familes 32,179
Population in Group Qrtrs 21
Population Density2 2,385
Diversity Index3 68


Median Household Income $98,539
Average Household Income $116,657
Per Capita Income $39,462


Total Housing Units 13,075 (100%)
Owner Occupied HU 9,354 (71.5%)
Renter Occupied HU 3,090 (23.6%)
Vacant Housing Units 631 ( 4.8%)
Median Home Value $365,162
Average Home Value $383,887


Total Households 12,444
Average Household Size 2.96
Family Households 9,765
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 1.44% 1.29%
Households 1.27% 1.16%
Families 1.22% 1.12%
Median Household Income   1.28%
Per Capita Income   2.11%

Severn, MD 21144 - Peer Comparisons by Rank and Percentile

The table below compares 21144 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 # 51 89th
Population Density # 99 79th
Diversity Index # 56 88th
Median Household Income # 130 72nd
Per Capita Income # 184 60th

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

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