ZIP Code Tabulation Area · Maryland

ZIP Code 21155: Baltimore County, MD

ZIP Code 21155 (Baltimore County, Maryland) has an estimated 3,313 residents in 1,032 households. The median household income is $123,158, the median home value is $479,500 and the median gross rent is $1,513/mo. Figures are U.S. Census Bureau American Community Survey 2020–2024 5-year estimates for the matching ZIP Code Tabulation Area.

American Community Survey 2020–2024 5-year estimates · Updated

Total population

3,313

Margin of error ±702

Median household income

$123,158

Margin of error ±$23,179

Median home value

$479,500

Margin of error ±$47,547

Median gross rent

$1,513/mo

Margin of error ±$692

Median age

33.7 yrs

Margin of error ±7.6 yrs

Mean travel time to work

30.6 min

Margin of error ±11.8 min

How ZIP 21155 compares with Maryland and the U.S.

State and national figures are the Census Bureau's own estimates for those areas from the same ACS release, not averages of ZIP codes.

Median age

ZIP 2115533.7 yrsMaryland39.4 yrsUnited States38.9 yrs

Median household income

ZIP 21155$123,158Maryland$103,678United States$80,734

Per capita income

ZIP 21155$49,882Maryland$52,979United States$44,673

Poverty rate

ZIP 211555.2%Maryland9.4%United States12.5%

Unemployment rate

ZIP 211553.0%Maryland4.9%United States5.2%

Bachelor's degree or higher

ZIP 2115543.5%Maryland43.4%United States35.7%

Median home value

ZIP 21155$479,500Maryland$419,900United States$332,700

Median gross rent

ZIP 21155$1,513/moMaryland$1,705/moUnited States$1,413/mo

Owner-occupied homes

ZIP 2115581.9%Maryland67.6%United States65.2%

Mean travel time to work

ZIP 2115530.6 minMaryland31.1 minUnited States26.4 min

Worked from home

ZIP 2115516.3%Maryland19.3%United States15.1%

All figures for ZIP 21155

Each estimate has a 90% margin of error: the true value is likely within that range. * marks estimates with a large margin of error (a coefficient of variation above 30%, or ±10 percentage points or more for rates).

ZIP 21155 — ACS 2020–2024 5-year estimates
MeasureZIP 21155Margin of errorMarylandUnited States
Total population3,313±7026,206,011334,922,499
Median age33.7 yrs±7.6 yrs39.4 yrs38.9 yrs
Households1,032±1592,362,928129,227,496
Median household income$123,158±$23,179$103,678$80,734
Per capita income$49,882±$7,763$52,979$44,673
Poverty rate5.2%±3.5 pts9.4%12.5%
Unemployment rate3.0%±3.1 pts4.9%5.2%
Bachelor's degree or higher43.5%±7.7 pts43.4%35.7%
Median home value$479,500±$47,547$419,900$332,700
Median gross rent$1,513/mo±$692$1,705/mo$1,413/mo
Owner-occupied homes81.9%±6.2 pts67.6%65.2%
Mean travel time to work30.6 min±11.8 min31.1 min26.4 min
Worked from home16.3%±7.0 pts19.3%15.1%

Race and Hispanic or Latino origin

Shares of the total population by the Census Bureau's race and Hispanic or Latino origin categories (table B03002), listed in the Census Bureau's order. People self-identify on the survey.

Population by race and Hispanic or Latino origin, ZIP 21155
GroupZIP 21155MarylandUnited States
White alone, not Hispanic or Latino93.7%46.6%57.4%
Black or African American alone, not Hispanic or Latino1.4%28.9%11.9%
American Indian and Alaska Native alone, not Hispanic or Latino0.1%0.1%0.5%
Asian alone, not Hispanic or Latino0.4%6.5%5.9%
Native Hawaiian and Other Pacific Islander alone, not Hispanic or Latino0.0%0.0%0.2%
Some other race alone, not Hispanic or Latino0.0%0.7%0.6%
Two or more races, not Hispanic or Latino1.8%4.6%4.3%
Hispanic or Latino (of any race)2.5%12.5%19.3%

Where ZIP 21155 is

State
Maryland
Main county
Baltimore County— also overlaps Carroll County
Land area
22.12 sq mi· about 150 people per sq mi

County and place names come from the Census Bureau's 2020 ZCTA relationship files. A ZIP code's mailing city, set by the U.S. Postal Service, can differ from these names.

Other ZIP codes in Baltimore County

21082 Baltimore County, MD21087 Kingsville, MD21093 Timonium, MD21111 Baltimore County, MD21117 Owings Mills, MD21120 Baltimore County, MD21128 Honeygo, MD21131 Baltimore County, MD21133 Randallstown, MD21136 Baltimore County, MD21152 Baltimore County, MD21153 Pikesville, MD21156 Kingsville, MD21162 Honeygo, MD21163 Baltimore County, MD21204 Towson, MD21207 Lochearn, MD21208 Pikesville, MD21209 Baltimore, MD21219 Edgemere, MD21220 Middle River, MD21221 Essex, MD21222 Dundalk, MD21227 Arbutus, MD

See every ZIP code in Maryland, or compare ZIP 21155 with another ZIP code.

Census figures describe residents as a group and cannot tell you about any one home or street. For a specific address, check local government and housing records.

About ZIP codes and ZCTAs: the Census Bureau publishes statistics for ZIP Code Tabulation Areas, which approximate USPS ZIP code delivery areas. Learn how they differ.

Sources

  • U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, detailed tables B01003, B01002, B11001, B19013, B19301, B17001, B23025, B15003, B25077, B25064, B25003, B08013, B08303, B08301, B03002 — snapshot Oct 26, 2026.
  • U.S. Census Bureau, 2020 ZCTA5 relationship files (county and place).
  • Data: U.S. Census Bureau, American Community Survey 5-year estimates (detailed tables) and 2020 Census ZCTA relationship files. This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau. These agencies do not endorse OpenZIP.