Residential delivery area · Georgia
ZIP Code 31522: Saint Simons Island, GA
ZIP code 31522 uses the postal name Saint Simons Island, Georgia and lies entirely in Glynn County (Census 2020 ZIP-county file). About 18,000 people live there (Census Bureau, ACS 2020-2024). Median household income is $108,632 (Census Bureau, ACS 2020-2024). By Census place, 31% of its land lies in St. Simons (a census-designated place); 69% is outside any Census place.
- ACS2020-24
- Census2020
- FHFA2025
- ZBP2023
- IRS2022
- Town
- Saint Simons Island · its only residential ZIP
- County
- Glynn County
- Census places
- St. Simons census-designated place
- Neighborhoods
- Kelvin Grove, King City, Kings Terrace, Mallory Park, Saint Simons Heights GeoNames
- Metro area
- Brunswick-St. Simons, GA
- House district
- GA-1 119th Congress
- State
- Georgia
- Time zone
- Eastern
- Land area
- 53.4 sq mi · 333 people per sq mi
Where is ZIP code 31522?
31522 centers on 31.257°, -81.342° and covers 53.4 square miles of land plus 16.5 of water. It borders 1 ZIP code: 31561.
The map draws ZIP code areas only. For the streets inside 31522, open its center on OpenStreetMap.
Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries and the 2023 Gazetteer (2020 ZCTAs); ZIP-to-county shares, Census places and House districts (119th Congress) from the Census 2020 relationship files (shares of land); metro area from the OMB delineation (July 2023); town name and time zone from simplemaps US ZIP Codes (CC BY 4.0); neighborhoods from the GeoNames gazetteer (CC BY 4.0), placed in this ZIP code by PlainZIP.
How does 31522 compare with the rest of Glynn County?
| Measure | 31522 | In Glynn County | In GA |
|---|---|---|---|
| People (ACS 2020-2024) | 17,780 | 3rd of 9 | 224th of 751 |
| Median household income | $109k | 1st of 5 | 58th of 476 |
| Median home value | $571k | 1st of 4 | 21st of 474 |
Its median household income is higher than in 86% of U.S. residential ZIP codes, and it is denser than 68% of all U.S. residential ZIP codes. ZIP codes at the ACS caps ($250,000 or more for household income, $2,000,000 or more for home value) share the top rank.
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B19013, B25077); ranks by PlainZIP over residential ZIP codes (ZCTAs).
How many people live in 31522?
The 2020 Census counted 16,892 people in 31522; the ACS, which samples households over 2020-2024, estimates 17,780. Between the 2010 and 2020 censuses its population grew 16.9% (its boundary stayed at least 90% the same).
- People, ACS 2020-2024
- 17,780
- 2020 Census count
- 16,892+16.9% since 2010 (14,447)
- Households
- 8,574
- Median age
- 59.9
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B01002, B11001); 2020 Census (DHC P1); 2010 Census (SF1 P1).
Who lives in 31522?
Of the 17,780 people the ACS estimates in 31522, 13.7% are under 18 and 39.5% are 65 or older. The largest group by race and Hispanic origin is White (not Hispanic) (91.8%).
- Under 1813.7%
- 18 to 6446.7%
- 65 and older39.5%
- White, not Hispanic91.8%
- Hispanic or Latino3.1%
- Other or two or more2.9%
- Black, not Hispanic1.2%
- Asian, not Hispanic1.0%
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01001 age by sex, B03002 Hispanic or Latino origin by race); shares of the estimated population, small ZIP codes carry wide margins.
What do households in 31522 earn?
Median household income is $108,632 (ACS 2020-2024), the highest of the 5 ranked ZIP codes in Glynn County. It is not measurably different from 2015-2019 ($110,898 in 2024 dollars): the change is within the surveys' margins of error.
- Median household income
- $108,632
- Income per person
- $75,759
- Below the poverty line
- 4.8%
- Unemployed (of the labor force)
- 2.7%
- Adults 25+ with a bachelor's degree
- 57.5%
- Adjusted gross income per tax return, 2022
- $169,3588,740 returns; wages 40% of AGI (IRS)
Source: U.S. Census Bureau, ACS 2020-2024 and 2015-2019 5-year estimates (B19013, B19301, B17001, B23025, B15003; 2015-2019 dollars converted with the BLS CPI-U, 1.22699); IRS Statistics of Income, ZIP code data, tax year 2022 (adjusted gross income per return, filed under the address on the return).
What are homes worth in 31522?
FHFA's house price index for 31522, built from repeat sales and appraisals of the same homes, rose 144% from 2015 to 2025 and rose 83% from 2020 to 2025, and moved +7.4% in 2025.
- Median home value (owners' estimate)
- $571,100
- Median gross rent
- $1,851
- Homes owned by their occupants
- 84.8%
- Housing units
- 12,234
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B25077, B25064, B25003, B25001); FHFA House Price Index, annual five-digit ZIP, updated 2026-03-31.
What businesses are in 31522?
871 business establishments had a location in this ZIP code in 2023, 67 more than in 2018; the most are in professional, scientific, and technical services (ZIP Code Business Patterns).
- Professional, scientific, and technical services132
- Retail trade108
- Accommodation and food services98
- Real estate and rental and leasing96
- Construction91
- Other services (except public administration)75
Source: U.S. Census Bureau, ZIP Code Business Patterns 2023 and 2018 (establishments with paid employees, by the business's ZIP code).
Which ZIP codes are next to 31522?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 31561 | Sea Island | 96 | $250k+ | 3.8 mi |
| 31524 | Brunswick | 0 | – | 7.8 mi (near) |
| 31305 | Darien | 5,108 | $43k | 7.9 mi (near) |
| 31520 | Brunswick | 22,313 | $40k | 10.2 mi (near) |
| 31525 | Brunswick | 28,926 | $70k | 11.7 mi (near) |
| 31327 | Sapelo Island | 0 | – | 11.9 mi (near) |
| 31527 | Jekyll Island | 769 | – | 13.3 mi (near) |
| 31523 | Brunswick | 15,402 | $89k | 16.5 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.