ZIP Code 31561 - Sea Island Georgia
Overview
ZIP Code 31561 is located in Sea Island Georgia. 31561 is entirely within Glynn County. Regionally, 31561 is located in the Brunswick-Coastal Georgia Region.
ZIP Code 31561 Quick Stats
| ZIP Code Name | Sea Island |
| Primary County | Glynn County |
| ZIP Code Type | PO Box |
| Population (2022) | 210 |
| Area Code(s) | 912 |
| Current Time | EDT |
ZIP Code 31561 Map
31561 Demographics
The majority race/ethnicity residing in 31561 is White. The current unemployment level in 31561 is 3.3%.
| Population | 210 |
| Population Growth Rate | 0% |
| Population Density | 64 People per Square Mile |
| Total Households | 86 |
| Percentage High Income Households | 19.8% |
| Current Unemployment Rate (May 2026) | 3.3% |
| Sales Tax Rate (2025) | 7% |
| Majority Race/Ethnicity | White - 100% |
31561 Race/Ethnicity Breakdown
| Race/Ethnicity | Total | Percentage |
|---|---|---|
| White | 103 | 100% |
| Black | 0 | 0% |
| Hispanic | 0 | 0% |
| Asian | 0 | 0% |
| Native American | 0 | 0% |
| Hawaiian/Pac. Islander | 0 | 0% |
31561 Educational Attainment Levels
| Highest Education Level | Total | Percentage |
|---|---|---|
| Less Than 1 Year of College | 0 | 0% |
| Bachelor Degree | 76 | 48.41% |
| High School Diploma | 46 | 29.3% |
| No High School Diploma | 0 | 0% |
| GED or Alternate | 20 | 12.74% |
| 1 or More Years of College | 15 | 9.55% |
| Associates Degree | 0 | 0% |
| Masters Degree | 0 | 0% |
| Professional Degree | 0 | 0% |
| Doctorate Degree | 0 | 0% |
31561 Geography
| Coordinates | 31.20420265, -81.33516693 |
| Adjacent ZIP Codes | |
| Region | Brunswick-Coastal Georgia Region |
| Metropolitan/Micropolitan Stat Area | Brunswick, GA |
| Time Zone | Eastern Daylight Time |
| IANA Timezone | America/New_York |
| Area | 3 Square Miles |
31561 Schools
| School Districts in 31561 | |
| Elementary Schools in 31561 | |
| Middle Schools in 31561 | |
| High Schools in 31561 |
31561 Weather and Climate Data
| Plant Hardiness Zone | Zone 9a: 20F to 25F | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Average First Frost Date | December 11 - 20 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Average Last Frost Date | February 21 - 28 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Koppen-Geiger Climate Zone | Cfa - Humid Subtropical Climate | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Ecoregion | 75j - Sea Islands/Coastal Marsh | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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