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 Moderate-density area
- $250,000+
- Median income Above-median income area
- $2,000,000+
- Median home value Above-median home value
- 93.1%
- Bachelor's or higher Above-average bachelor's attainment
National ZIP placement
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 $250,000+ (119% above the average Maryland ZIP), while per-capita income is $214,716. Both reported hardship measures are comparatively low in absolute terms: poverty is 0.0% and unemployment is 0.0%. Housing is both higher-cost and owner-heavy: median home value is $2,000,000+ (347% above the average Maryland ZIP), while 100.0% of occupied 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 -. The page also surfaces 10 ZIP codes within roughly 10 miles and 6 more in Anne Arundel County, so 21056 can be compared with both its immediate and county-level context.
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
Who lives in ZIP 21056?
66.6
Median Age
46.0%
Male
54.0%
Female
0.0%
Foreign-Born
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?
$250,000+
Median Household Income
+119% vs state ZIP avg
$214,716
Per Capita Income
0.0%
Poverty Rate
0.0%
Unemployment Rate
How ZIP 21056 ranks among Maryland ZIPs
Gibson Island, MD household income vs. every Maryland ZIP code
Median household income among 419 reporting Maryland ZIPs (this ZIP's population is too small for a reliable national-corpus placement)
$250,000 Top 2% higher than 98% of 419 Maryland ZIPs
Each bar is a $20K-wide band; taller bars hold more Maryland 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?
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
What does housing look like?
Housing stock: occupied vs vacant
306housing units
306
Total Housing Units
145
Occupied Units
161
Vacant Units
2.01
Avg Household Size
Occupancy Type
$2,000,000+
Median Home Value
+347% vs state ZIP avg
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.
- 21122
Pasadena (21122)
60,576 residents
- 21401
Annapolis (21401)
36,012 residents
- 21403
Annapolis (21403)
30,269 residents
- 21060
Glen Burnie (21060)
29,223 residents
- 21146
Severna Park (21146)
26,705 residents
- 21012 21,317
Arnold (21012)
21,317 residents
- 21409 20,064
Annapolis (21409)
20,064 residents
- 21402 5,217
Annapolis (21402)
5,217 residents
- 21405 544
Annapolis (21405)
544 residents
What this shows Among its immediate neighbors, ZIP 21056 ranks #0 by population - useful context the national average alone can't give.
ZIP 21056 vs its nearest neighbors, by median income
Median household income of this ZIP and the closest reporting ZIP codes within ~10 miles.
- 21056
Gibson Island (21056)
$250,000 median income
- 21146
Severna Park (21146)
$172,122 median income
- 21405
Annapolis (21405)
$160,703 median income
- 21409
Annapolis (21409)
$147,151 median income
- 21012
Arnold (21012)
$139,432 median income
- 21122
Pasadena (21122)
$127,587 median income
- 21401
Annapolis (21401)
$123,381 median income
- 21403
Annapolis (21403)
$123,329 median income
- 21060
Glen Burnie (21060)
$104,715 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.
| 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 |
Nationwide ZIPs with similar ACS profiles
Two Census-derived peer sets for ZIP 21056, both outside MD so the neighborhoods are not geographic containment (Nearby and same-county blocks stay local).
Similar median household income
Nearest cross-state ZIPs by ACS median household income.
More ZIP Codes in Anne Arundel County
Related Areas
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 $250,000+, 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 $2,000,000+, 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).
Related
Take this with you
What to do with ZIP 21056's numbers, next.
- See how ZIP 21056 compares to a neighboring ZIP code on the same Census fields Compare this ZIP
- Check where Gibson Island, MD ranks among every U.S. ZIP code on income, education, or homeownership View national rankings
- Save this ZIP to your shortlist to track alongside others you're considering View your shortlist
ZIP Code Tabulation Areas (ZCTAs) are Census Bureau approximations of USPS ZIP codes; figures describe the ZCTA area, not any single address within it.