Sea Island, GA 31561 ZIP Code Profile

Related Place Profiles:
Brunswick, GA | Sea Island, GA

ZIP Code 31561: Basic Data & USPS Preferred City Name

Preferred Name, USPS
Sea Island, GA 31561

Acceptable Alternative
Brunswick, GA 31561

  • ZIP Code Type: PO BOX
  • County: Glynn County
  • Centroid: Latitude 31.206, Longitude -81.33
  • Time Zone: Eastern Time Zone (UTC -5 hours)
  • Observes DST: Yes
  • Businesses Addresses: 54
  • PO Box Addresses: 472
  • Residential Addresses: 1
    • Multi-Family Addresses: 0
    • Single Family Addresses: 1

The ZIP Code maps and database are updated 4 times per year.
Database updated: August 1, 2018, Maps updated: August 1, 2018.

Jump to... (On This Page!)
  1. 31561 2018 Demographic Data
  2. Growth Rates for 31561 (Historical & 5-Year Forecast)
  3. Peer Comparisons (Rank and Percentile)
  1. Neighborhoods Demographics (Home Values, Household Income, etc.)
  2. Georgia Research Tools (Easy Tools & Current Data)
  3. Georgia Data Comparison Tool - 2018 Demographics

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Boundary Maps, Demographic Data, School Zones Review maps and data for the neighborhood, city, county, ZIP Code, and school zone. July 1, 2018, data includes home values, household income, percentage of homes owned, rented or vacant, etc.


Sea Island, GA 31561 Data & Demographics (As of July 1, 2018)


Total Population 318
Population in Households 318
Population in Familes 257
Population in Group Qrtrs 0
Population Density2 81
Diversity Index3 14


Median Household Income $103,850
Average Household Income $151,876
Per Capita Income $80,714


Total Housing Units 947 (100%)
Owner Occupied HU 148 (15.6%)
Renter Occupied HU 21 ( 2.2%)
Vacant Housing Units 778 (82.2%)
Median Home Value $435,294
Average Home Value $692,568


Total Households 169
Average Household Size 1.88
Family Households 113
Average Family Size 2
  1. Demographics are point estimates for July 1st of the current year and each for the forecast years. See References for more information.
  2. Population Density = Total Population per square mile.
  3. The Diversity Index is a scale of 0 to 100 that represents the likelihood that two persons, chosen at random from the same area, belong to different race or ethnic groups. If an area's entire population belongs to one race AND one ethnic group, then the area has zero diversity. An area's diversity index increases to 100 when the population is evenly divided into two or more race/ethnic groups.


2010-2018 2018-2023
Population 0.79% 0.99%
Households 0.82% 1.04%
Families 0.66% 0.7%
Median Household Income   1.75%
Per Capita Income   3.13%

Sea Island, GA 31561 - Peer Comparisons by Rank and Percentile

The table below compares 31561 to the other 704 ZIP Codes in Georgia by rank and percentile using July 1, 2018 data. The location Ranked # 1 has the highest value. A location that ranks higher than 75% of its peers would be in the 75th percentile of the peer group.

Variable Description Rank Percentile
Total Population # 681 3rd
Population Density # 383 46th
Diversity Index # 674 4th
Median Household Income # 11 99th
Per Capita Income # 4 100th

Additional comparisons and rankings can be made with a VERY EASY TO USE Georgia Census Data Comparison Tool.

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