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Zip Code 21231 Population

Population breakdown by gender

Population in zip code 21231 is 16,367 residents | Male to Female ratio is 1:1.07 | Zip Code 21231 land area is 0.8724 sq. miles | Population density is 18,760.89 residents per square mile

Median age in zip code 21231

  Median Age
Zip Code Median Age 31.6
Median Age - Male 32.1
Median Age - Female 31.4

Median age of zip code 21231 is 6.8% lower compared to nearby zip codes and 15.1% lower compared to the United States median age. Comparing gender-specific madian age yields the following results. Male median age of zip code 21231 is 2.7% lower compared to nearby zip codes and 10.3% lower compared to the United States male median age. Female zip code 21231 median age is 9.5% lower in comparison to nearby zip codes and 18.4% lower compared to female national median age average.

Population breakdown by age

Racial makeup of zip code 21231

White population 9743
Black or African American population 4938
Asian population 693
American Indian and Alaska Native population 70
Native Hawaiian and other Pacific Islander population 0
Other population 715

Region of birth

Zip code 21231 ancestry distribution

Arab 0.2% Czech 0.4%
Danish 0% Dutch 0.5%
English 5.4% French No Basque 1%
French Canadian 0.3% German 10%
Greek 0.6% Hungarian 0.1%
Irish 10.2% Italian 4.3%
Lithuanian 0.2% Norwegian 0.5%
Polish 8.1% Portuguese 0%
Russian 0.8% Scotch-Irish 0.8%
Scottish 1.3% Slovak 0.1%
Subsaharan African 0.9% Swedish 0.7%
Swiss 0% Ukrainian 0.6%
USA 2.8% Welsh 0.8%
West Indian No Hispanic Groups 0.5% Other Ancestries 45.2%

Family type by presence of children under 18 by age in zip code 21231

Family Type Distribution
Total families 2880
Married couples 55.52%
Other couples 44.48%

Family and household income distribution in zip code 21231

  Family income (%) Household income (%)
$30,000 or less 34.79% 36.12%
$30,000 and $50,000 9.38% 11.38%
$50,000 and $100,000 21.77% 27.79%
$100,000 and $200,000 23.33% 18.47%
$200,000 or more 10.73% 6.24%

Households by size in zip code 21231

Household language in zip code 21231

English language 83.02%
Spanish language 11.65%
Other European language 2.47%
Asian language 2.37%
Other language 0.49%

Population by housing unit in zip code 21231

Total Occupied housing units 7520
Detached housing units 4%
Attached housing units 55.49%
2 units 8.06%
3 - 4 units 9.14%
5 - 9 units 5.7%
10 - 19 units 1.85%
20 - 49 units 1.52%
50 or more units 14.24%
Mobile homes 0%
Boats, RVs, Vans 0%

Means of transportation to work in zip code 21231

Use car, track or Van 68.29%
Use public transportation 12.3%
Use Motorcycle 0%
Use bicycle 1.7%
Walk to work 14.58%
Work at home 3.14%

School attendance in zip code 21231

Attent Preschool programs 2.98%
Attend Public School 10.03%
Attend college undergraduate program 3.81%
Attent graduate studies 6.58%
Not enrolled in school 76.6%

Highest school attainment in zip code 21231

Less then 9th grade 10.57%
Grade 9 to 12, no diploma 10.86%
High school diploma 17.31%
Some college, no degree 10.8%
Associate degree 5.35%
Bachelor's degree 36.91%
Graduate or professional degree 8.19%

Real Estate in zip code 21231

Housing occupied 85.05%
Housing vacant 14.95%
Housing occupied by owner 36.53%
Housing occupied by tenant 63.47%
Total Rented Units 4773
Median Contract Gross Rent $817
Median Gross Rent $1,025
Median Home Value $278,000

Contract rent is the monthly cash rent agreed to, regardless of any furnishings, utilities, fees, meals, or services that may be included. Gross rent is the contract rent plus the estimated average monthly cost of utilities and fuels if these are paid by the renter. In zip code 21231 median gross rent is 25.46% larger then the median contract rent.

Average estimated apartment rent in zip code 21231

Studio $870
1 Bedroom $980
2 Bedrooms $1,180
3 Bedrooms $1,520
4 Bedrooms $1,870
AVERAGE RENT $1,284

Average rent in zip code 21231 ($1,284.00) is 13.8% higher compared to nearby zip codes and 37.3% higher compared to the average rent in the US. The following illustrates how zip code 21231 rent compares to the nearby zip code rents by unit type: studio apartment rent is 14% higher, one bedroom apartment rent is 13.4% higher, two bedroom rent is 13.8% higher, three bedroom rent is 14.2% higher, four bedroom rent is 13.7% higher.

Housing units in zip code 21231

Total housing units 8842
Detached housing units 3.4%
Attached housing units 55.49%
2 units 8.57%
3 - 4 units 9.86%
5 - 9 units 5.65%
10 - 19 units 2.04%
20 - 49 units 1.76%
50 or more units 13.22%
Mobile homes 0%
Boats, RVs, Vans 0%

Real Estate taxes paid in zip code 21231

Total Real Estate Taxes $11,568,100
Real estate taxes paid for units with a mortgage $9,895,000
Real estate taxes paid for units with no mortgage $1,673,100

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Nearby Zip Code Income Per Capita Comparison

Zip Codes Near 21231