PlainZIP

Gibson Island, MD · standard

ZIP Code 21056

Anne Arundel County, Maryland - Census ACS demographics, housing tenure, and business patterns, benchmarked against every US ZIP.

267
75/sq mi
$250,001
Median income
$2,000,001
Median home value
93.1%
Bachelor's or higher

The verdict

Gibson Island pairs a top-decile household income with top-decile home values, in a rural, homeowner-dominated area.

Top 1%
household income, US ZIPs
Top 1%
home value, US ZIPs
75
people per sq mi
100%
owner-occupied homes

Source: U.S. Census Bureau ACS 5-Year Estimates (2019–2023). Percentiles rank ZIP 21056 against every reporting US ZIP.

ZIP code 21056 is a sparsely populated ZIP (a standard USPS delivery area) in Gibson Island, Anne Arundel County, Maryland, home to just 267 residents across 3.6 square miles, a density of 75 people per square mile, in the New York time zone.

ZIP 21056 skews affluent, with a median household income of $250,001 (119% above the Maryland average), while per-capita income is $214,716. Poverty here runs at 0.0%, with unemployment measured at 0.0%. Housing costs here run $2,000,001 for a typical home value (347% above the state average), with rent averaging - a month; 100.0% of homes are owner-occupied.

This is a highly-educated ZIP: 93.1% of adults hold a bachelor's degree or higher, the median age is 66.6, and the average commute is -. A geography-based comparison follows: 10 ZIP codes within about 10 miles of 21056, plus 6 more within Anne Arundel County, give a clearer read than the national average alone.

Every figure on this page is sourced from the U.S. Census Bureau American Community Survey 5-Year Estimates (including median rent) and the FHFA House Price Index, no estimates, no proprietary scoring. Verify with Census →

Source: U.S. Census Bureau, American Community Survey 5-Year Estimates + ZIP Code Business Patterns + FHFA HPI ACS demographics and median rent, ZBP business establishments, FHFA HPI for ZIP 21056, Gibson Island, MD · 2023 Census ACS 5-Year Estimates use a rolling 60-month sample for stable small-geography estimates; ZBP updated annually; FHFA HPI updated quarterly/annually.

Quick Facts

267

Population

3.6

Area (sq mi)

75

People / sq mi

New York

Time Zone

standard

ZIP Type

Neighborhood Scorecard
Get an A-F grade across income, safety, housing, rent, education, commute, and childcare for this ZIP code.
View Scorecard →

Who lives in ZIP 21056?

66.6

Median Age

46.0%

Male

54.0%

Female

0.0%

Foreign-Born

White 100.0%
African American 0.0%
Asian 0.0%
American Indian or Alaska Native 0.0%
Native Hawaiian or Pacific Islander 0.0%
Two or More Ethnicities 0.0%
Hispanic or Latino 0.0%

Hispanic or Latino is an ethnicity category from the Census Bureau and may overlap with other categories above.

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

How much do residents earn?

$250,001

Median Household Income

+119% vs state

$214,716

Per Capita Income

0.0%

Poverty Rate

0.0%

Unemployment Rate

How ZIP 21056 ranks nationally

Gibson Island, MD household income vs. every US ZIP code

Median household income, the full national distribution, with this ZIP marked

$250,001 Top 1% higher than 99% of 30,318 US ZIPs

$0–$20,000: 118 US ZIPs (0%). Below this entry. $20,000–$40,000: 1,573 US ZIPs (5%). Below this entry. $40,000–$60,000: 7,092 US ZIPs (23%). Below this entry. $60,000–$80,000: 9,980 US ZIPs (33%). Below this entry. $80,000–$100,000: 5,778 US ZIPs (19%). Below this entry. $100,000–$120,000: 2,855 US ZIPs (9%). Below this entry. $120,000–$140,000: 1,362 US ZIPs (4%). Below this entry. $140,000–$160,000: 686 US ZIPs (2%). Below this entry. $160,000–$180,000: 364 US ZIPs (1%). Below this entry. $180,000–$200,000: 186 US ZIPs (1%). Below this entry. $200,000–$220,000: 324 US ZIPs (1%). This entry sits in this band. This ZIP $0 $200K+ every reporting US ZIP, bucketed by value

Each bar is a $20K-wide band; taller bars hold more US ZIPs. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.

Source U.S. Census Bureau, ACS 5-Year Estimates · 2019–2023

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

What is the education profile here?

High School Graduate or Higher 100.0%
Bachelor's Degree or Higher 93.1%

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

What does housing look like?

306

Total Housing Units

145

Occupied Units

161

Vacant Units

2.01

Avg Household Size

Occupancy Type

Owner 100.0%
Renter 0.0%

$2,000,001

Median Home Value

+347% vs state

1960

Median Year Built

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

What businesses operate in this ZIP?

Census Bureau data shows 6 business establishments in ZIP 21056, employing approximately 133 people with a combined annual payroll of $8,147,000.

6

Businesses

133

Employees

$8.1M

Annual Payroll

0

Industry Sectors

Source: U.S. Census Bureau, ZIP Code Business Patterns (ZBP), 2023. Employment figures may include noise for disclosure avoidance.

Nearby ZIP Codes

Want a side-by-side? Compare 21056 vs 21409 →

ZIP 21056 vs its nearest neighbors, by population

Resident population of this ZIP and the closest reporting ZIP codes within ~10 miles.

residents

What this shows Among its immediate neighbors, ZIP 21056 ranks #0 by population - useful context the national average alone can't give.

Source U.S. Census Bureau · ACS 5-Year Estimates As of 2019–2023

ZIP 21056 vs its nearest neighbors, by median income

Median household income of this ZIP and the closest reporting ZIP codes within ~10 miles.

median income

What this shows By household income, ZIP 21056 ranks the highest of 9 neighboring ZIPs, local affluence varies block to block, not just metro to metro.

Source U.S. Census Bureau · ACS 5-Year Estimates As of 2019–2023
ZIP Code City Population Distance
21409 Annapolis, MD 20,064 3.9 mi
21012 Arnold, MD 21,317 3.7 mi
21122 Pasadena, MD 60,576 4.4 mi
21146 Severna Park, MD 26,705 6.2 mi
21402 Annapolis, MD 5,217 6.3 mi
21052 Fort Howard, MD 303 9.0 mi
21405 Annapolis, MD 544 6.7 mi
21403 Annapolis, MD 30,269 9.5 mi
21401 Annapolis, MD 36,012 8.4 mi
21060 Glen Burnie, MD 29,223 10.0 mi

More ZIP Codes in Anne Arundel County

21122 standard
Pasadena, MD
Pop: 60,576
21061 standard
Glen Burnie, MD
Pop: 53,684
21401 standard
Annapolis, MD
Pop: 36,012
21144 standard
Severn, MD
Pop: 31,884
21113 standard
Odenton, MD
Pop: 30,469
21403 standard
Annapolis, MD
Pop: 30,269

Related Areas

Anne Arundel County Gibson Island, MD Maryland

Frequently Asked Questions

What county is ZIP code 21056 in? ▼
ZIP code 21056 (Gibson Island) is located in Anne Arundel County, Maryland. Anne Arundel County contains multiple ZIP codes, see the full list at /counties/anne-arundel-md.
What is the population of ZIP code 21056? ▼
ZIP code 21056 in Gibson Island, MD has a population of 267 according to the Census Bureau ACS 2023 estimates.
What is the median household income in ZIP 21056? ▼
The median household income in ZIP 21056 is $250,001, which is 228% above the national average of $76,288.
What is the average home value in ZIP 21056? ▼
The median home value in ZIP 21056 is $2,000,001, which is 619% above the national average of $278,155.
What is the demographic makeup of ZIP 21056? ▼
The largest racial group in ZIP 21056 is White at 100.0%.
How many businesses are in ZIP code 21056? ▼
ZIP code 21056 has 6 business establishments employing approximately 133 people, according to Census Bureau ZIP Code Business Patterns (ZBP) 2023 data.
What is the education level in ZIP code 21056? ▼
In ZIP code 21056, 100.0% of residents aged 25+ have a high school diploma or higher, and 93.1% hold a bachelor's degree or higher. These figures come from the Census Bureau ACS 5-Year Estimates (2023).

Read our methodology to see how this data is sourced, computed, and verified.