21222 ZIP Code Profile, Map, Data & Demographics

ZIP Code Type: STANDARD
County: Baltimore County
Centroid: Latitude 39.263, Longitude -76.5
Time Zone: Eastern Time Zone (UTC -5 hours)
Observes DST: Yes

ZIP Code 21222 has segments in 2 Counties / Independent Cities (Baltimore, Baltimore City).

Businesses Addresses: 1,070
PO Box Addresses: 165
Residential Addresses: 23,108

Multi-Family Addresses: 1,864
Single Family Addresses: 21,244

The ZIP Code maps and database are updated 4 times per year.
Database updated: June 1, 2025, Maps updated: May 1, 2024.

Dundalk, MD 21222 Data & Demographics (As of July 1, 2025)

POPULATION
Total Population	59,009 (100%)
Population in Households	58,843 (99.7%)
Population in Families	46,161 (78.2%)
Population in Group Quarters¹	166 ( 0.3%)
Population Density	5,034
Diversity Index²	67


INCOME
Median Household Income	$64,274
Average Household Income	$81,754
% of Income for Mortgage⁴	26%
Per Capita Income	$31,074
Wealth Index⁵	59
Socioeconomic Status Index⁶	Low (41.7)

HOUSING
Total HU (Housing Units)	24,196 (100%)
Owner Occupied HU	14,258 (58.9%)
Renter Occupied HU	8,161 (33.7%)
Vacant Housing Units	1,777 ( 7.3%)
Median Home Value	$268,319
Average Home Value	$356,690
Housing Affordability Index³	87

HOUSEHOLDS
Total Households	22,419
Average Household Size	2.62
Family Households	14,130
Average Family Size	3.00

NOTES

Group Quarters - a place where people live or stay in a group living arrangement. Includes college residents halls, nursing facilities, military barracks, and correctional facilities.
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 races 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.
The Housing Affordability Index base is 100 and represents a balance point where a resident with a median household income can normally qualify to purchase a median price home. Values above 100 indicate increased affordability, while values below 100 indicate decreased affordability.
The % of Income for Mortgage quantifies the percentage of median household income dedicated to mortgage payments on a home priced at the median value (assuming a 30-year mortgage and a 20% down payment).
The Wealth Index is based on a number of indicators of affluence including average household income and average net worth, but it also includes the value of material possessions and resources. It represents the wealth of the area relative to the national level. Values above or below 100 represent above-average wealth or below-average wealth compared to the national level.
The Socioeconomic Index ranges from zero (lowest relative status) to 100 (highest relative status). This measure quantifies disparities in social position of an area's inhabitants and is built from a broad range of demographic, housing, and socioeconomic inputs. More information on this measure can be found in Esri's SEI tutorial.

Dundalk, MD 21222 - Peer Comparisons by Rank and Percentile

The table below compares 21222 to the other 458 ZIP Codes in Maryland by rank and percentile using July 1, 2025 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.

GROWTH RATE / YEAR	2020-2025	2025-2030
Population	-0.03%	-0.04%
Households	0.01%	0.03%
Families		-0.05%
Median Household Income		1.88%
Per Capita Income		2.17%
Owner Occupied HU		0.74%

Variable Description	Rank	Percentile
Total Population	# 8	98th
Population Density	# 45	90th
Median Household Income	# 404	12th
Housing Affordability Index	# 233	51st
Per Capita Income	# 423	8th
Diversity Index	# 98	79th

21222 ZIP Code Profile, Map, Data & Demographics

ZIP Code 21222: Basic Data & USPS Preferred City Name

Dundalk, MD 21222 Data & Demographics (As of July 1, 2025)

POPULATION

INCOME

HOUSING

HOUSEHOLDS

GROWTH RATE / YEAR

Dundalk, MD 21222 - Peer Comparisons by Rank and Percentile

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