Zip code 31561: Sea Island, Georgia
Boundary is the Census Bureau's ZIP Code Tabulation Area, which closely tracks the postal delivery area.
About 31561
31561 is a rural zip code in Sea Island, Georgia (Glynn County), covering 4.7 sq mi of land. About 96 people live here, or 20 per square mile. The median resident is 69.6 years old, compared with 38.9 nationally. With so few residents, the Census figures below are rough estimates with wide margins of error.
The median household income is $250,000+ a year, the Census Bureau's reporting limit (U.S.: $80,734). 0% of residents live below the poverty line (U.S.: 12.5%). The median home value is $2,000,000+. 100% of occupied homes are lived in by their owners.
100% of adults hold a bachelor's degree or higher (U.S.: 36%). 20% of households speak a language other than English at home, most often Spanish.
How 31561 compares
Only about 96 people live here, so these survey estimates have wide margins of error.
- U.S. 334,922,499 · GA 10,940,407
- Population density20/sq miU.S. 95/sq mi · GA 190/sq mi
- Median household income$250,000+U.S. $80,734 · GA $77,353
- Per capita income$191,870U.S. $44,673 · GA $40,924
- Median home value$2,000,000+U.S. $332,700 · GA $303,300
- Median age69.6U.S. 38.9 · GA 37.6
- U.S. 12.5% · GA 13.4%
- U.S. 35.7% · GA 34.9%
- U.S. 65.2% · GA 65.7%
- U.S. 15.1% · GA 15.9%
- U.S. 5.2% · GA 5.1%
- U.S. 61.4 · GA 64.9
- Broadband access100%U.S. 91% · GA 91%
- U.S. 8.4% · GA 12.4%
- Veterans14.3%U.S. 6.2% · GA 7.2%
- U.S. 14.1% · GA 11.2%
- Housing vacancy89.3%U.S. 10.1% · GA 10.3%
- U.S. 17.2% · GA 15%
- Residents under 1819.8%U.S. 22% · GA 23.2%
- U.S. 3.8% · GA 4%
- Healthcare workers42.1%U.S. 9.7% · GA 8.2%
- U.S. 10% · GA 10.1%
- U.S. 14.5% · GA 14.3%
- U.S. 0.483 · GA 0.477
| Measure | 31561 | Glynn | GA | U.S. | National percentile | Rank in GA |
|---|---|---|---|---|---|---|
| Population | 96 | 85,447 | 10,940,407 | 334,922,499 | — | — |
| Population density | 20/sq mi | 204/sq mi | 190/sq mi | 95/sq mi | — | — |
| Median household income | $250,000+ | $69,799 | $77,353 | $80,734 | — | — |
| Per capita income | $191,870 | $42,622 | $40,924 | $44,673 | — | — |
| Median home value | $2,000,000+ | $301,300 | $303,300 | $332,700 | — | — |
| Median age | 69.6 | 43.4 | 37.6 | 38.9 | — | — |
| Poverty rate | 0% | 16.1% | 13.4% | 12.5% | — | — |
| Bachelor's degree or higher | 100% | 32.4% | 34.9% | 35.7% | — | — |
| Homeownership rate | 100% | 66.7% | 65.7% | 65.2% | — | — |
| Work from home | 0% | 8.8% | 15.9% | 15.1% | — | — |
| Unemployment rate | 0% | 3.7% | 5.1% | 5.2% | — | — |
| Diversity index | 0 | 55.2 | 64.9 | 61.4 | — | — |
| Broadband access | 100% | 88.8% | 91% | 91% | — | — |
| Uninsured rate | 0% | 13.3% | 12.4% | 8.4% | — | — |
| Veterans | 14.3% | 8% | 7.2% | 6.2% | — | — |
| Foreign-born residents | 0% | 6.4% | 11.2% | 14.1% | — | — |
| Housing vacancy | 89.3% | 18.3% | 10.3% | 10.1% | — | — |
| Residents 65 and older | 59.4% | 22.7% | 15% | 17.2% | — | — |
| Residents under 18 | 19.8% | 20.8% | 23.2% | 22% | — | — |
| Tech workers | 0% | 1.9% | 4% | 3.8% | — | — |
| Healthcare workers | 42.1% | 8.8% | 8.2% | 9.7% | — | — |
| Self-employed workers | 0% | 12.3% | 10.1% | 10% | — | — |
| Government workers | 0% | 16.9% | 14.3% | 14.5% | — | — |
| Income inequality (Gini) | 0.494 | 0.502 | 0.477 | 0.483 | — | — |
The percentile is the share of Americans who live in a zip code with a lower value, so the 50th percentile is typical. Rank 1 is the highest value in the state. Both include zip codes with at least 100 residents. Strengths and weaknesses mark measures in the best or worst fifth nationally, where higher or lower is clearly better (income, poverty, education, commute, broadband, insurance and similar). Measures like age or density are left unmarked.
People
Age
Race and ethnicity
- White100%
- Black0%
- Hispanic0%
- Asian0%
- Native American0%
- Pacific Islander0%
- Other0%
- Multiracial0%
Language spoken at home (households)
Households
- Households
- 40
- Average household size
- 2.4
- Family households
- 100%
- Married couples
- 100%
- Living alone
- 0%
- Veterans (of adults)
- 14.3%
- Male / female
- 51% / 49%
Income and poverty
Household income distribution
Median household income
Housing
Median home value
Median gross rent
Types of housing
- Housing units
- 373
- Owner-occupied
- 100%
- Vacant
- 89.3%
- Median year built
- 1983
- Median rooms
- 7.5
- Renters paying 30%+ of income
- —
- Renters paying 50%+ of income
- —
- Home value to income
- 8.0× (U.S. 4.1×)
Work and commute
How people get to work
Commute time (one way)
Jobs and careers
Occupations
Industries
Median earnings by type of work
| Type of work | 31561 | U.S. |
|---|---|---|
| Management, business, science and arts | — | $74,888 |
| Service | — | $26,804 |
| Sales and office | — | $40,476 |
| Construction and maintenance | — | $49,199 |
| Production and transportation | — | $39,989 |
Education, internet and health coverage
Highest education (adults 25+)
- High school graduate or higher
- 100%
- Bachelor's degree or higher
- 100%
- Graduate or professional degree
- 64.9%
- Households with broadband
- 100%
- Cable, fiber or DSL
- 100%
- No internet access
- 0%
- Without health insurance
- 0%
- Limited-English households
- 0%
Geography
- City (USPS)
- Sea Island
- State
- Georgia
- County
- Glynn County
- Center point
- 31.2091° N, 81.3099° W
- Land area
- 4.7 sq mi
- Water area
- 4.2 sq mi
- Time zone
- Eastern Time (UTC-5, UTC-4 in summer)
- Zip type
- Residential delivery area
Zip codes near 31561
| Zip | City | Distance | IncomeMedian income |
|---|---|---|---|
| 31522 | Saint Simons Island, GA | 3.8 mi | $108,632 |
| 31524 | Brunswick, GA | 9.9 mi | — |
| 31520 | Brunswick, GA | 11 mi | $40,071 |
| 31527 | Jekyll Island, GA | 11 mi | — |
| 31521 | Brunswick, GA · PO box | 12 mi | — |
| 31305 | Darien, GA | 12 mi | $43,138 |
| 31327 | Sapelo Island, GA | 15 mi | — |
| 31525 | Brunswick, GA | 15 mi | $69,493 |
| 31319 | Meridian, GA · PO box | 18 mi | — |
| 31523 | Brunswick, GA | 18 mi | $88,988 |
| 31331 | Townsend, GA | 21 mi | $61,336 |
| 31304 | Crescent, GA · PO box | 21 mi | — |
Questions about 31561
What city is zip code 31561?
31561 is assigned to Sea Island, Georgia. The city name is the one the Postal Service prefers for mail addressed to this zip code.
What county is 31561 in?
31561 is in Glynn County, Georgia.
What is the population of 31561?
About 96 people live in 31561, according to the Census Bureau's American Community Survey.
What time zone is 31561 in?
31561 is in Eastern Time.
What is the median household income in 31561?
The median household income in 31561 is $250,000+.
What zip codes are near 31561?
The closest zip codes to 31561 are 31522, 31524, 31520, 31527, 31521.
Demographic figures are 2020–2024 American Community Survey 5-year estimates for ZIP Code Tabulation Area 31561, from the U.S. Census Bureau. Small areas have wide margins of error. How we build these numbers.